try to run the unittest

(still comment the deprecation warning, which we should eventually fix ...)

.clang-format

@@ -0,0 +1,47 @@
+# https://releases.llvm.org/7.0.0/tools/clang/docs/ClangFormatStyleOptions.html
+
+---
+Language: Cpp
+
+BasedOnStyle: WebKit
+
+AlignAfterOpenBracket: Align
+AlignOperands: true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: true
+AllowShortFunctionsOnASingleLine: false
+AllowShortIfStatementsOnASingleLine: true
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakTemplateDeclarations: true
+BinPackArguments: false
+BinPackParameters: false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Allman
+BreakConstructorInitializersBeforeComma: true
+ColumnLimit: 100
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+Cpp11BracedListStyle: true
+FixNamespaceComments: true
+IncludeBlocks:   Regroup
+IncludeCategories:
+  - Regex:           '^["<](stdafx|pch)\.h[">]$'
+    Priority:        -1
+  - Regex:           '^<Windows\.h>$'
+    Priority:        3
+  - Regex:           '^<(WinIoCtl|winhttp|Shellapi)\.h>$'
+    Priority:        4
+  - Regex:           '.*'
+    Priority:        2
+IndentCaseLabels: true
+IndentWidth: 4
+KeepEmptyLinesAtTheStartOfBlocks: false
+MaxEmptyLinesToKeep: 2
+NamespaceIndentation: All
+PenaltyReturnTypeOnItsOwnLine: 1000
+PointerAlignment: Left
+SpaceAfterTemplateKeyword: false
+SpaceAfterCStyleCast: true
+Standard: Cpp11
+UseTab: Never

.dockerignore

@@ -1 +1,4 @@
 build
+CMakeCache.txt
+ws/CMakeCache.txt
+test/build

.github/workflows/ccpp.yml

@@ -0,0 +1,92 @@
+name: unittest
+on:
+  push:
+    paths-ignore:
+    - 'docs/**'
+
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: make test
+      run: make test
+
+  mac_tsan_sectransport:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: make test_tsan
+      run: make test_tsan
+
+  mac_tsan_openssl:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: install openssl
+      run: brew install openssl
+    - name: make test
+      run: make test_tsan_openssl
+
+  mac_tsan_mbedtls:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: install mbedtls
+      run: brew install mbedtls
+    - name: make test
+      run: make test_tsan_mbedtls
+
+  windows_no_tls:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: seanmiddleditch/gha-setup-vsdevenv@master
+    - run: |
+        mkdir build
+        cd build
+        cmake -DCMAKE_CXX_COMPILER=cl.exe -DUSE_TEST=1 ..
+    - run: cmake --build build
+    - run: |
+        cd test
+        ..\build\test\ixwebsocket_unittest.exe
+
+      # windows_mbedtls:
+      #   runs-on: windows-latest
+      #   steps:
+      #   - uses: actions/checkout@v1
+      #   - uses: seanmiddleditch/gha-setup-vsdevenv@master
+      #   - run: |
+      #       vcpkg install zlib:x64-windows
+      #       vcpkg install mbedtls:x64-windows
+      #   - run: |
+      #       mkdir build
+      #       cd build
+      #       cmake -DCMAKE_TOOLCHAIN_FILE=c:/vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_CXX_COMPILER=cl.exe -DUSE_MBED_TLS=1 -DUSE_TLS=1 -DUSE_WS=1 -DUSE_TEST=1 ..
+      #   - run: cmake --build build
+
+    # Running the unittest does not work, the binary cannot be found
+    #- run: ../build/test/ixwebsocket_unittest.exe
+    # working-directory: test
+
+#
+#   Windows with OpenSSL is working but disabled as it takes 13 minutes (10 for openssl) to build with vcpkg
+#
+#   windows_openssl:
+#     runs-on: windows-latest
+#     steps:
+#     - uses: actions/checkout@v1
+#     - uses: seanmiddleditch/gha-setup-vsdevenv@master
+#     - run: |
+#         vcpkg install zlib:x64-windows
+#         vcpkg install openssl:x64-windows
+#     - run: |
+#         mkdir build
+#         cd build
+#         cmake -DCMAKE_TOOLCHAIN_FILE=c:/vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_CXX_COMPILER=cl.exe -DUSE_OPEN_SSL=1 -DUSE_TLS=1 -DUSE_WS=1 -DUSE_TEST=1 ..
+#     - run: cmake --build build
+# 
+#     # Running the unittest does not work, the binary cannot be found
+#     #- run: ../build/test/ixwebsocket_unittest.exe
+#     # working-directory: test
+

.github/workflows/mkdocs.yml

@@ -0,0 +1,25 @@
+name: mkdocs
+on:
+  push:
+    paths:
+    - 'docs/**'
+
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.8
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install mkdocs
+        pip install mkdocs-material
+        pip install pygments
+    - name: Build doc
+      run: |
+        git pull
+        mkdocs gh-deploy

.gitignore

@@ -1 +1,7 @@
 build
+*.pyc
+venv
+ixsnake/ixsnake/.certs/
+site/
+ws/.certs/
+ws/.srl

.pre-commit-config.yaml

@@ -0,0 +1,7 @@
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v2.3.0
+    hooks:
+    -   id: check-yaml
+    -   id: end-of-file-fixer
+    -   id: trailing-whitespace

.travis.yml

@@ -1,17 +0,0 @@
-language: cpp
-dist: xenial
-
-compiler:
-  - gcc
-  - clang
-os:
-  - linux
-  - osx
-
-matrix:
-  exclude:
-    # GCC fails on recent Travis OSX images.
-    - compiler: gcc
-      os: osx
-
-script: python test/run.py

CMake/FindJsonCpp.cmake

@@ -0,0 +1,19 @@
+# Find package structure taken from libcurl
+
+include(FindPackageHandleStandardArgs)
+
+find_path(JSONCPP_INCLUDE_DIRS json/json.h)
+find_library(JSONCPP_LIBRARY jsoncpp)
+
+find_package_handle_standard_args(JSONCPP
+    FOUND_VAR
+      JSONCPP_FOUND
+    REQUIRED_VARS
+      JSONCPP_LIBRARY
+      JSONCPP_INCLUDE_DIRS
+    FAIL_MESSAGE
+      "Could NOT find jsoncpp"
+)
+
+set(JSONCPP_INCLUDE_DIRS ${JSONCPP_INCLUDE_DIRS})
+set(JSONCPP_LIBRARIES ${JSONCPP_LIBRARY})

CMake/FindMbedTLS.cmake

@@ -0,0 +1,13 @@
+find_path(MBEDTLS_INCLUDE_DIRS mbedtls/ssl.h)
+
+find_library(MBEDTLS_LIBRARY mbedtls)
+find_library(MBEDX509_LIBRARY mbedx509)
+find_library(MBEDCRYPTO_LIBRARY mbedcrypto)
+
+set(MBEDTLS_LIBRARIES "${MBEDTLS_LIBRARY}" "${MBEDX509_LIBRARY}" "${MBEDCRYPTO_LIBRARY}")
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(MBEDTLS DEFAULT_MSG
+    MBEDTLS_INCLUDE_DIRS MBEDTLS_LIBRARY MBEDX509_LIBRARY MBEDCRYPTO_LIBRARY)
+
+mark_as_advanced(MBEDTLS_INCLUDE_DIRS MBEDTLS_LIBRARY MBEDX509_LIBRARY MBEDCRYPTO_LIBRARY)

CMake/FindSpdLog.cmake

@@ -0,0 +1,19 @@
+# Find package structure taken from libcurl
+
+include(FindPackageHandleStandardArgs)
+
+find_path(SPDLOG_INCLUDE_DIRS spdlog/spdlog.h)
+find_library(JSONCPP_LIBRARY spdlog)
+
+find_package_handle_standard_args(SPDLOG
+    FOUND_VAR
+    SPDLOG_FOUND
+    REQUIRED_VARS
+      SPDLOG_LIBRARY
+      SPDLOG_INCLUDE_DIRS
+    FAIL_MESSAGE
+      "Could NOT find spdlog"
+)
+
+set(SPDLOG_INCLUDE_DIRS ${SPDLOG_INCLUDE_DIRS})
+set(SPDLOG_LIBRARIES ${SPDLOG_LIBRARY})

CMakeLists.txt

@@ -4,14 +4,15 @@
 #
 
 cmake_minimum_required(VERSION 3.4.1)
+set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")
+
 project(ixwebsocket C CXX)
 
 set (CMAKE_CXX_STANDARD 14)
 set (CXX_STANDARD_REQUIRED ON)
 set (CMAKE_CXX_EXTENSIONS OFF)
 
-# -Wshorten-64-to-32 does not work with clang
-if (NOT WIN32)
+if (UNIX)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic")
 endif()
 
@@ -20,77 +21,121 @@ if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
 endif()
 
 set( IXWEBSOCKET_SOURCES
+    ixwebsocket/IXBench.cpp
+    ixwebsocket/IXCancellationRequest.cpp
+    ixwebsocket/IXConnectionState.cpp
+    ixwebsocket/IXDNSLookup.cpp
+    ixwebsocket/IXExponentialBackoff.cpp
+    ixwebsocket/IXHttp.cpp
+    ixwebsocket/IXHttpClient.cpp
+    ixwebsocket/IXHttpServer.cpp
+    ixwebsocket/IXNetSystem.cpp
+    ixwebsocket/IXSelectInterrupt.cpp
+    ixwebsocket/IXSelectInterruptFactory.cpp
     ixwebsocket/IXSocket.cpp
-    ixwebsocket/IXSocketServer.cpp
     ixwebsocket/IXSocketConnect.cpp
     ixwebsocket/IXSocketFactory.cpp
-    ixwebsocket/IXDNSLookup.cpp
-    ixwebsocket/IXCancellationRequest.cpp
+    ixwebsocket/IXSocketServer.cpp
+    ixwebsocket/IXSocketTLSOptions.cpp
+    ixwebsocket/IXUdpSocket.cpp
+    ixwebsocket/IXUrlParser.cpp
+    ixwebsocket/IXUserAgent.cpp
     ixwebsocket/IXWebSocket.cpp
-    ixwebsocket/IXWebSocketServer.cpp
-    ixwebsocket/IXWebSocketTransport.cpp
+    ixwebsocket/IXWebSocketCloseConstants.cpp
     ixwebsocket/IXWebSocketHandshake.cpp
+    ixwebsocket/IXWebSocketHttpHeaders.cpp
+    ixwebsocket/IXWebSocketMessageQueue.cpp
     ixwebsocket/IXWebSocketPerMessageDeflate.cpp
     ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp
     ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp
-    ixwebsocket/IXWebSocketHttpHeaders.cpp
-    ixwebsocket/IXHttpClient.cpp
-    ixwebsocket/IXUrlParser.cpp
-    ixwebsocket/IXSelectInterrupt.cpp
-    ixwebsocket/IXSelectInterruptPipe.cpp
-    ixwebsocket/IXSelectInterruptFactory.cpp
-    ixwebsocket/IXConnectionState.cpp
+    ixwebsocket/IXWebSocketServer.cpp
+    ixwebsocket/IXWebSocketTransport.cpp
+    ixwebsocket/LUrlParser.cpp
 )
 
 set( IXWEBSOCKET_HEADERS
+    ixwebsocket/IXBench.h
+    ixwebsocket/IXCancellationRequest.h
+    ixwebsocket/IXConnectionState.h
+    ixwebsocket/IXDNSLookup.h
+    ixwebsocket/IXExponentialBackoff.h
+    ixwebsocket/IXHttp.h
+    ixwebsocket/IXHttpClient.h
+    ixwebsocket/IXHttpServer.h
+    ixwebsocket/IXNetSystem.h
+    ixwebsocket/IXProgressCallback.h
+    ixwebsocket/IXSelectInterrupt.h
+    ixwebsocket/IXSelectInterruptFactory.h
+    ixwebsocket/IXSetThreadName.h
     ixwebsocket/IXSocket.h
-    ixwebsocket/IXSocketServer.h
     ixwebsocket/IXSocketConnect.h
     ixwebsocket/IXSocketFactory.h
-    ixwebsocket/IXSetThreadName.h
-    ixwebsocket/IXDNSLookup.h
-    ixwebsocket/IXCancellationRequest.h
-    ixwebsocket/IXProgressCallback.h
+    ixwebsocket/IXSocketServer.h
+    ixwebsocket/IXSocketTLSOptions.h
+    ixwebsocket/IXUdpSocket.h
+    ixwebsocket/IXUrlParser.h
+    ixwebsocket/IXUtf8Validator.h
+    ixwebsocket/IXUserAgent.h
     ixwebsocket/IXWebSocket.h
-    ixwebsocket/IXWebSocketServer.h
-    ixwebsocket/IXWebSocketTransport.h
-    ixwebsocket/IXWebSocketHandshake.h
-    ixwebsocket/IXWebSocketSendInfo.h
+    ixwebsocket/IXWebSocketCloseConstants.h
+    ixwebsocket/IXWebSocketCloseInfo.h
     ixwebsocket/IXWebSocketErrorInfo.h
+    ixwebsocket/IXWebSocketHandshake.h
+    ixwebsocket/IXWebSocketHttpHeaders.h
+    ixwebsocket/IXWebSocketInitResult.h
+    ixwebsocket/IXWebSocketMessage.h
+    ixwebsocket/IXWebSocketMessageQueue.h
+    ixwebsocket/IXWebSocketMessageType.h
+    ixwebsocket/IXWebSocketOpenInfo.h
     ixwebsocket/IXWebSocketPerMessageDeflate.h
     ixwebsocket/IXWebSocketPerMessageDeflateCodec.h
     ixwebsocket/IXWebSocketPerMessageDeflateOptions.h
-    ixwebsocket/IXWebSocketHttpHeaders.h
+    ixwebsocket/IXWebSocketSendInfo.h
+    ixwebsocket/IXWebSocketServer.h
+    ixwebsocket/IXWebSocketTransport.h
+    ixwebsocket/IXWebSocketVersion.h
+    ixwebsocket/LUrlParser.h
     ixwebsocket/libwshandshake.hpp
-    ixwebsocket/IXHttpClient.h
-    ixwebsocket/IXUrlParser.h
-    ixwebsocket/IXSelectInterrupt.h
-    ixwebsocket/IXSelectInterruptPipe.h
-    ixwebsocket/IXSelectInterruptFactory.h
-    ixwebsocket/IXConnectionState.h
 )
 
+if (UNIX)
+    # Linux, Mac, iOS, Android
+    list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSelectInterruptPipe.cpp )
+    list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSelectInterruptPipe.h )
+endif()
+
 # Platform specific code
 if (APPLE)
     list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/apple/IXSetThreadName_apple.cpp)
 elseif (WIN32)
     list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/windows/IXSetThreadName_windows.cpp)
+elseif (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
+    list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/freebsd/IXSetThreadName_freebsd.cpp)
 else()
     list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/linux/IXSetThreadName_linux.cpp)
     list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSelectInterruptEventFd.cpp)
     list( APPEND IXWEBSOCKET_HEADERS ixwebsocket/IXSelectInterruptEventFd.h)
 endif()
 
-if (USE_TLS)
-    add_definitions(-DIXWEBSOCKET_USE_TLS)
+option(USE_TLS "Enable TLS support" FALSE)
 
-    if (APPLE)
+if (USE_TLS)
+    option(USE_MBED_TLS "Use Mbed TLS" OFF)
+    option(USE_OPEN_SSL "Use OpenSSL" OFF)
+
+    # default to mbedtls on windows if nothing is configured
+    if (WIN32 AND NOT USE_OPEN_SSL AND NOT USE_MBED_TLS)
+      option(USE_MBED_TLS "Use Mbed TLS" ON)
+    endif()
+
+    if (USE_MBED_TLS)
+        list( APPEND IXWEBSOCKET_HEADERS ixwebsocket/IXSocketMbedTLS.h)
+        list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSocketMbedTLS.cpp)
+    elseif (APPLE AND NOT USE_OPEN_SSL)
         list( APPEND IXWEBSOCKET_HEADERS ixwebsocket/IXSocketAppleSSL.h)
         list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSocketAppleSSL.cpp)
-    elseif (WIN32)
-        list( APPEND IXWEBSOCKET_HEADERS ixwebsocket/IXSocketSChannel.h)
-        list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSocketSChannel.cpp)
     else()
+        set(USE_OPEN_SSL ON)
         list( APPEND IXWEBSOCKET_HEADERS ixwebsocket/IXSocketOpenSSL.h)
         list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSocketOpenSSL.cpp)
     endif()
@@ -101,38 +146,105 @@ add_library( ixwebsocket STATIC
     ${IXWEBSOCKET_HEADERS}
 )
 
-# gcc/Linux needs -pthread
-find_package(Threads)
+if (USE_TLS)
+    target_compile_definitions(ixwebsocket PUBLIC IXWEBSOCKET_USE_TLS)
+    if (USE_MBED_TLS)
+        target_compile_definitions(ixwebsocket PUBLIC IXWEBSOCKET_USE_MBED_TLS)
+    elseif (USE_OPEN_SSL)
+        target_compile_definitions(ixwebsocket PUBLIC IXWEBSOCKET_USE_OPEN_SSL)
+    endif()
+endif()
 
-if(UNIX AND NOT APPLE)
-  find_package(OpenSSL REQUIRED)
-  add_definitions(${OPENSSL_DEFINITIONS})
-  message(STATUS "OpenSSL: " ${OPENSSL_VERSION})
-  include_directories(${OPENSSL_INCLUDE_DIR})
+if (APPLE AND USE_TLS AND NOT USE_MBED_TLS AND NOT USE_OPEN_SSL)
+  target_link_libraries(ixwebsocket "-framework foundation" "-framework security")
 endif()
 
 if (WIN32)
-  get_filename_component(libz_path
-    ${PROJECT_SOURCE_DIR}/third_party/ZLIB-Windows/zlib-1.2.11_deploy_v140/release_dynamic/x64/lib/zlib.lib
-    ABSOLUTE)
-  add_library(libz STATIC IMPORTED)
-  set_target_properties(libz PROPERTIES IMPORTED_LOCATION
-    ${libz_path})
-
-  include_directories(${PROJECT_SOURCE_DIR}/third_party/ZLIB-Windows/zlib-1.2.11_deploy_v140/include)
-
-  target_link_libraries(ixwebsocket libz wsock32 ws2_32)
+  target_link_libraries(ixwebsocket wsock32 ws2_32 shlwapi)
   add_definitions(-D_CRT_SECURE_NO_WARNINGS)
-  
+endif()
+
+if (UNIX)
+  find_package(Threads)
+  target_link_libraries(ixwebsocket ${CMAKE_THREAD_LIBS_INIT})
+endif()
+
+if (USE_TLS AND USE_OPEN_SSL)
+
+  # Help finding Homebrew's OpenSSL on macOS
+  if (APPLE)
+    set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} /usr/local/opt/openssl/lib)
+    set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} /usr/local/opt/openssl/include)
+  endif()
+
+  if(NOT OPENSSL_FOUND)
+    find_package(OpenSSL REQUIRED)
+  endif()
+  add_definitions(${OPENSSL_DEFINITIONS})
+  message(STATUS "OpenSSL: " ${OPENSSL_VERSION})
+  include_directories(${OPENSSL_INCLUDE_DIR})
+  target_link_libraries(ixwebsocket ${OPENSSL_LIBRARIES})
+endif()
+
+if (USE_TLS AND USE_MBED_TLS)
+  # FIXME I'm not too sure that this USE_VENDORED_THIRD_PARTY thing works
+  if (USE_VENDORED_THIRD_PARTY)
+    set (ENABLE_PROGRAMS OFF)
+    add_subdirectory(third_party/mbedtls)
+    include_directories(third_party/mbedtls/include)
+
+    target_link_libraries(ixwebsocket mbedtls)
+  else()
+    find_package(MbedTLS REQUIRED)
+    target_include_directories(ixwebsocket PUBLIC ${MBEDTLS_INCLUDE_DIRS})
+    target_link_libraries(ixwebsocket ${MBEDTLS_LIBRARIES})
+  endif()
+endif()
+
+if (NOT ZLIB_FOUND)
+  find_package(ZLIB)
+endif()
+if (ZLIB_FOUND)
+  include_directories(${ZLIB_INCLUDE_DIRS})
+  target_link_libraries(ixwebsocket ${ZLIB_LIBRARIES})
 else()
-  target_link_libraries(ixwebsocket 
-    z ${OPENSSL_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
+  include_directories(third_party/zlib ${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib)
+  add_subdirectory(third_party/zlib)
+  target_link_libraries(ixwebsocket zlibstatic)
 endif()
 
 set( IXWEBSOCKET_INCLUDE_DIRS
-    .
-    ../../shared/OpenSSL/include)
-target_include_directories( ixwebsocket PUBLIC ${IXWEBSOCKET_INCLUDE_DIRS} )
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
 
-add_subdirectory(ws)
-add_subdirectory(third_party/cpp_redis)
+if (CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+    # Build with Multiple Processes
+    target_compile_options(ixwebsocket PRIVATE /MP)
+endif()
+
+target_include_directories(ixwebsocket PUBLIC ${IXWEBSOCKET_INCLUDE_DIRS})
+
+set_target_properties(ixwebsocket PROPERTIES PUBLIC_HEADER "${IXWEBSOCKET_HEADERS}")
+
+install(TARGETS ixwebsocket
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_PREFIX}/lib
+        PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_PREFIX}/include/ixwebsocket/
+)
+
+if (USE_WS OR USE_TEST)
+  add_subdirectory(ixcore)
+  add_subdirectory(ixcrypto)
+  add_subdirectory(ixcobra)
+  add_subdirectory(ixsnake)
+  add_subdirectory(ixsentry)
+  add_subdirectory(ixbots)
+
+  add_subdirectory(third_party/spdlog spdlog)
+
+  if (USE_WS)
+      add_subdirectory(ws)
+  endif()
+  if (USE_TEST)
+      add_subdirectory(test)
+  endif()
+endif()

DOCKER_VERSION

@@ -1 +0,0 @@
-1.3.2

Dockerfile

@@ -1 +1 @@
-Dockerfile.dev
+docker/Dockerfile.alpine

Dockerfile.dev

@@ -1,31 +0,0 @@
-FROM debian:stretch
-
-ENV DEBIAN_FRONTEND noninteractive
-RUN apt-get update 
-RUN apt-get -y install g++ 
-RUN apt-get -y install libssl-dev
-RUN apt-get -y install gdb
-RUN apt-get -y install screen
-RUN apt-get -y install procps
-RUN apt-get -y install lsof
-RUN apt-get -y install libz-dev
-RUN apt-get -y install vim
-RUN apt-get -y install make
-RUN apt-get -y install cmake
-RUN apt-get -y install curl
-RUN apt-get -y install python
-RUN apt-get -y install netcat
-
-# debian strech cmake is too old for building with Docker
-COPY makefile .
-RUN ["make", "install_cmake_for_linux"]
-
-COPY . .
-
-ARG CMAKE_BIN_PATH=/tmp/cmake/cmake-3.14.0-rc4-Linux-x86_64/bin
-ENV PATH="${CMAKE_BIN_PATH}:${PATH}"
-
-# RUN ["make"]
-
-EXPOSE 8765
-CMD ["/ws/ws", "transfer", "--port", "8765", "--host", "0.0.0.0"]

README.md

@@ -1,398 +1,47 @@
-# General
+## Hello world
 
-![Alt text](https://travis-ci.org/machinezone/IXWebSocket.svg?branch=master)
+![Build status](https://github.com/machinezone/IXWebSocket/workflows/unittest/badge.svg)
 
-## Introduction
+IXWebSocket is a C++ library for WebSocket client and server development. It has minimal dependencies (no boost), is very simple to use and support everything you'll likely need for websocket dev (SSL, deflate compression, compiles on most platforms, etc...). HTTP client and server code is also available, but it hasn't received as much testing.
 
-[*WebSocket*](https://en.wikipedia.org/wiki/WebSocket) is a computer communications protocol, providing full-duplex and bi-directionnal communication channels over a single TCP connection. *IXWebSocket* is a C++ library for client and server Websocket communication, and for client HTTP communication. The code is derived from [easywsclient](https://github.com/dhbaird/easywsclient) and from the [Satori C SDK](https://github.com/satori-com/satori-rtm-sdk-c). It has been tested on the following platforms.
+It is been used on big mobile video game titles sending and receiving tons of messages since 2017 (iOS and Android). It was tested on macOS, iOS, Linux, Android, Windows and FreeBSD. Two important design goals are simplicity and correctness.
 
-* macOS
-* iOS
-* Linux
-* Android
+```cpp
+// Required on Windows
+ix::initNetSystem();
 
-The code was made to compile once on Windows but support is currently broken on this platform.
-
-## Examples
-
-The [*ws*](https://github.com/machinezone/IXWebSocket/tree/master/ws) folder countains many interactive programs for chat, [file transfers](https://github.com/machinezone/IXWebSocket/blob/master/ws/ws_send.cpp), [curl like](https://github.com/machinezone/IXWebSocket/blob/master/ws/ws_http_client.cpp) http clients, demonstrating client and server usage.
-
-Here is what the client API looks like.
-
-```
+// Our websocket object
 ix::WebSocket webSocket;
 
 std::string url("ws://localhost:8080/");
 webSocket.setUrl(url);
 
-// Optional heart beat, sent every 45 seconds when there is not any traffic
-// to make sure that load balancers do not kill an idle connection.
-webSocket.setHeartBeatPeriod(45);
-
-// Setup a callback to be fired when a message or an event (open, close, error) is received
-webSocket.setOnMessageCallback(
-    [](ix::WebSocketMessageType messageType,
-       const std::string& str,
-       size_t wireSize,
-       const ix::WebSocketErrorInfo& error,
-       const ix::WebSocketCloseInfo& closeInfo,
-       const ix::WebSocketHttpHeaders& headers)
+// Setup a callback to be fired (in a background thread, watch out for race conditions !)
+// when a message or an event (open, close, error) is received
+webSocket.setOnMessageCallback([](const ix::WebSocketMessagePtr& msg)
     {
-        if (messageType == ix::WebSocket_MessageType_Message)
+        if (msg->type == ix::WebSocketMessageType::Message)
         {
-            std::cout << str << std::endl;
+            std::cout << msg->str << std::endl;
         }
-});
+    }
+);
 
 // Now that our callback is setup, we can start our background thread and receive messages
 webSocket.start();
 
-// Send a message to the server (default to BINARY mode)
+// Send a message to the server (default to TEXT mode)
 webSocket.send("hello world");
-
-// The message can be sent in TEXT mode
-webSocket.sendText("hello again");
-
-// ... finally ...
-
-// Stop the connection
-webSocket.stop()
 ```
 
-Here is what the server API looks like. Note that server support is very recent and subject to changes.
+Interested? Go read the [docs](https://machinezone.github.io/IXWebSocket/)! If things don't work as expected, please create an issue on GitHub, or even better a pull request if you know how to fix your problem.
 
-```
-// Run a server on localhost at a given port.
-// Bound host name, max connections and listen backlog can also be passed in as parameters.
-ix::WebSocketServer server(port);
+IXWebSocket is actively being developed, check out the [changelog](https://machinezone.github.io/IXWebSocket/CHANGELOG/) to know what's cooking. If you are looking for a real time messaging service (the chat-like 'server' your websocket code will talk to) with many features such as history, backed by Redis, look at [cobra](https://github.com/machinezone/cobra).
 
-server.setOnConnectionCallback(
-    [&server](std::shared_ptr<WebSocket> webSocket,
-              std::shared_ptr<ConnectionState> connectionState)
-    {
-        webSocket->setOnMessageCallback(
-            [webSocket, connectionState, &server](ix::WebSocketMessageType messageType,
-               const std::string& str,
-               size_t wireSize,
-               const ix::WebSocketErrorInfo& error,
-               const ix::WebSocketOpenInfo& openInfo,
-               const ix::WebSocketCloseInfo& closeInfo)
-            {
-                if (messageType == ix::WebSocket_MessageType_Open)
-                {
-                    std::cerr << "New connection" << std::endl;
+IXWebSocket client code is autobahn compliant beginning with the 6.0.0 version. See the current [test results](https://bsergean.github.io/autobahn/reports/clients/index.html). Some tests are still failing in the server code.
 
-                    // A connection state object is available, and has a default id
-                    // You can subclass ConnectionState and pass an alternate factory
-                    // to override it. It is useful if you want to store custom
-                    // attributes per connection (authenticated bool flag, attributes, etc...)
-                    std::cerr << "id: " << connectionState->getId() << std::endl;
+## Users
 
-                    // The uri the client did connect to.
-                    std::cerr << "Uri: " << openInfo.uri << std::endl;
+If your company or project is using this library, feel free to open an issue or PR to amend this list.
 
-                    std::cerr << "Headers:" << std::endl;
-                    for (auto it : openInfo.headers)
-                    {
-                        std::cerr << it.first << ": " << it.second << std::endl;
-                    }
-                }
-                else if (messageType == ix::WebSocket_MessageType_Message)
-                {
-                    // For an echo server, we just send back to the client whatever was received by the server
-                    // All connected clients are available in an std::set. See the broadcast cpp example.
-                    webSocket->send(str);
-                }
-            }
-        );
-    }
-);
-
-auto res = server.listen();
-if (!res.first)
-{
-    // Error handling
-    return 1;
-}
-
-// Run the server in the background. Server can be stoped by calling server.stop()
-server.start();
-
-// Block until server.stop() is called.
-server.wait();
-
-```
-
-Here is what the HTTP client API looks like. Note that HTTP client support is very recent and subject to changes.
-
-```
-//
-// Preparation
-//
-HttpClient httpClient;
-HttpRequestArgs args;
-
-// Custom headers can be set
-WebSocketHttpHeaders headers;
-headers["Foo"] = "bar";
-args.extraHeaders = headers;
-
-// Timeout options
-args.connectTimeout = connectTimeout;
-args.transferTimeout = transferTimeout;
-
-// Redirect options
-args.followRedirects = followRedirects;
-args.maxRedirects = maxRedirects;
-
-// Misc
-args.compress = compress; // Enable gzip compression
-args.verbose = verbose;
-args.logger = [](const std::string& msg)
-{
-    std::cout << msg;
-};
-
-//
-// Request
-//
-HttpResponse out;
-std::string url = "https://www.google.com";
-
-// HEAD request
-out = httpClient.head(url, args);
-
-// GET request
-out = httpClient.get(url, args);
-
-// POST request with parameters
-HttpParameters httpParameters;
-httpParameters["foo"] = "bar";
-out = httpClient.post(url, httpParameters, args);
-
-// POST request with a body
-out = httpClient.post(url, std::string("foo=bar"), args);
-
-//
-// Result
-//
-auto statusCode = std::get<0>(out);
-auto errorCode = std::get<1>(out);
-auto responseHeaders = std::get<2>(out);
-auto payload = std::get<3>(out);
-auto errorMsg = std::get<4>(out);
-auto uploadSize = std::get<5>(out);
-auto downloadSize = std::get<6>(out);
-```
-
-## Build
-
-CMakefiles for the library and the examples are available. This library has few dependencies, so it is possible to just add the source files into your project.
-
-There is a Dockerfile for running some code on Linux, and a unittest which can be executed by typing `make test`.
-
-You can build and install the ws command line tool with Homebrew.
-
-```
-brew tap bsergean/IXWebSocket
-brew install IXWebSocket
-```
-
-## Implementation details
-
-### Per Message Deflate compression.
-
-The per message deflate compression option is supported. It can lead to very nice bandbwith savings (20x !) if your messages are similar, which is often the case for example for chat applications. All features of the spec should be supported.
-
-### TLS/SSL
-
-Connections can be optionally secured and encrypted with TLS/SSL when using a wss:// endpoint, or using normal un-encrypted socket with ws:// endpoints. AppleSSL is used on iOS and macOS, and OpenSSL is used on Android and Linux.
-
-### Polling and background thread work
-
-No manual polling to fetch data is required. Data is sent and received instantly by using a background thread for receiving data and the select [system](http://man7.org/linux/man-pages/man2/select.2.html) call to be notified by the OS of incoming data. No timeout is used for select so that the background thread is only woken up when data is available, to optimize battery life. This is also the recommended way of using select according to the select tutorial, section [select law](https://linux.die.net/man/2/select_tut). Read and Writes to the socket are non blocking. Data is sent right away and not enqueued by writing directly to the socket, which is [possible](https://stackoverflow.com/questions/1981372/are-parallel-calls-to-send-recv-on-the-same-socket-valid) since system socket implementations allow concurrent read/writes. However concurrent writes need to be protected with mutex.
-
-### Automatic reconnection
-
-If the remote end (server) breaks the connection, the code will try to perpetually reconnect, by using an exponential backoff strategy, capped at one retry every 10 seconds.
-
-### Large messages
-
-Large frames are broken up into smaller chunks or messages to avoid filling up the os tcp buffers, which is permitted thanks to WebSocket [fragmentation](https://tools.ietf.org/html/rfc6455#section-5.4). Messages up to 1G were sent and received succesfully.
-
-## Limitations
-
-* No utf-8 validation is made when sending TEXT message with sendText()
-* Automatic reconnection works at the TCP socket level, and will detect remote end disconnects. However, if the device/computer network become unreachable (by turning off wifi), it is quite hard to reliably and timely detect it at the socket level using `recv` and `send` error codes. [Here](https://stackoverflow.com/questions/14782143/linux-socket-how-to-detect-disconnected-network-in-a-client-program) is a good discussion on the subject. This behavior is consistent with other runtimes such as node.js. One way to detect a disconnected device with low level C code is to do a name resolution with DNS but this can be expensive. Mobile devices have good and reliable API to do that.
-* The server code is using select to detect incoming data, and creates one OS thread per connection. This is not as scalable as strategies using epoll or kqueue.
-
-## C++ code organization
-
-Here is a simplistic diagram which explains how the code is structured in term of class/modules.
-
-```
-+-----------------------+ --- Public
-|                       | Start the receiving Background thread. Auto reconnection. Simple websocket Ping.
-|  IXWebSocket          | Interface used by C++ test clients. No IX dependencies.
-|                       |
-+-----------------------+
-|                       |
-|  IXWebSocketServer    | Run a server and give each connections its own WebSocket object.
-|                       | Each connection is handled in a new OS thread.
-|                       |
-+-----------------------+ --- Private
-|                       |
-|  IXWebSocketTransport | Low level websocket code, framing, managing raw socket. Adapted from easywsclient.
-|                       |
-+-----------------------+
-|                       |
-|  IXWebSocketHandshake | Establish the connection between client and server.
-|                       |
-+-----------------------+
-|                       |
-|  IXWebSocket          | ws://  Unencrypted Socket handler
-|  IXWebSocketAppleSSL  | wss:// TLS encrypted Socket AppleSSL handler. Used on iOS and macOS
-|  IXWebSocketOpenSSL   | wss:// TLS encrypted Socket OpenSSL handler.  Used on Android and Linux
-|                       |                                               Can be used on macOS too.
-+-----------------------+
-|                       |
-|  IXSocketConnect      | Connect to the remote host (client).
-|                       |
-+-----------------------+
-|                       |
-|  IXDNSLookup          | Does DNS resolution asynchronously so that it can be interrupted.
-|                       |
-+-----------------------+
-```
-
-## API
-
-### Sending messages
-
-`websocket.send("foo")` will send a message.
-
-If the connection was closed and sending failed, the return value will be set to false.
-
-### ReadyState
-
-`getReadyState()` returns the state of the connection. There are 4 possible states.
-
-1. WebSocket_ReadyState_Connecting - The connection is not yet open.
-2. WebSocket_ReadyState_Open       - The connection is open and ready to communicate.
-3. WebSocket_ReadyState_Closing    - The connection is in the process of closing.
-4. WebSocket_MessageType_Close     - The connection is closed or could not be opened.
-
-### Open and Close notifications
-
-The onMessage event will be fired when the connection is opened or closed. This is similar to the [Javascript browser API](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket), which has `open` and `close` events notification that can be registered with the browser `addEventListener`.
-
-```
-webSocket.setOnMessageCallback(
-    [](ix::WebSocketMessageType messageType,
-       const std::string& str,
-       size_t wireSize,
-       const ix::WebSocketErrorInfo& error,
-       const ix::WebSocketCloseInfo& closeInfo,
-       const ix::WebSocketHttpHeaders& headers)
-    {
-        if (messageType == ix::WebSocket_MessageType_Open)
-        {
-            std::cout << "send greetings" << std::endl;
-
-            // Headers can be inspected (pairs of string/string)
-            std::cout << "Handshake Headers:" << std::endl;
-            for (auto it : headers)
-            {
-                std::cout << it.first << ": " << it.second << std::endl;
-            }
-        }
-        else if (messageType == ix::WebSocket_MessageType_Close)
-        {
-            std::cout << "disconnected" << std::endl;
-
-            // The server can send an explicit code and reason for closing.
-            // This data can be accessed through the closeInfo object.
-            std::cout << closeInfo.code << std::endl;
-            std::cout << closeInfo.reason << std::endl;
-        }
-    }
-);
-```
-
-### Error notification
-
-A message will be fired when there is an error with the connection. The message type will be `ix::WebSocket_MessageType_Error`. Multiple fields will be available on the event to describe the error.
-
-```
-webSocket.setOnMessageCallback(
-    [](ix::WebSocketMessageType messageType,
-       const std::string& str,
-       size_t wireSize,
-       const ix::WebSocketErrorInfo& error,
-       const ix::WebSocketCloseInfo& closeInfo,
-       const ix::WebSocketHttpHeaders& headers)
-    {
-        if (messageType == ix::WebSocket_MessageType_Error)
-        {
-            std::stringstream ss;
-            ss << "Error: "         << error.reason      << std::endl;
-            ss << "#retries: "      << event.retries     << std::endl;
-            ss << "Wait time(ms): " << event.wait_time   << std::endl;
-            ss << "HTTP Status: "   << event.http_status << std::endl;
-            std::cout << ss.str() << std::endl;
-        }
-    }
-);
-```
-
-### start, stop
-
-1. `websocket.start()` connect to the remote server and starts the message receiving background thread.
-2. `websocket.stop()` disconnect from the remote server and closes the background thread.
-
-### Configuring the remote url
-
-The url can be set and queried after a websocket object has been created. You will have to call `stop` and `start` if you want to disconnect and connect to that new url.
-
-```
-std::string url("wss://example.com");
-websocket.configure(url);
-```
-
-### Ping/Pong support
-
-Ping/pong messages are used to implement keep-alive. 2 message types exists to identify ping and pong messages. Note that when a ping message is received, a pong is instantly send back as requested by the WebSocket spec.
-
-```
-webSocket.setOnMessageCallback(
-    [](ix::WebSocketMessageType messageType,
-       const std::string& str,
-       size_t wireSize,
-       const ix::WebSocketErrorInfo& error,
-       const ix::WebSocketCloseInfo& closeInfo,
-       const ix::WebSocketHttpHeaders& headers)
-    {
-        if (messageType == ix::WebSocket_MessageType_Ping ||
-            messageType == ix::WebSocket_MessageType_Pong)
-        {
-            std::cout << "pong data: " << str << std::endl;
-        }
-    }
-);
-```
-
-A ping message can be sent to the server, with an optional data string.
-
-```
-websocket.ping("ping data, optional (empty string is ok): limited to 125 bytes long");
-```
-
-### Heartbeat.
-
-You can configure an optional heart beat / keep-alive, sent every 45 seconds
-when there is no any traffic to make sure that load balancers do not kill an
-idle connection.
-
-```
-webSocket.setHeartBeatPeriod(45);
-```
+- [Machine Zone](https://www.mz.com)

SECURITY.md

@@ -0,0 +1,11 @@
+# Security Policy
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 7.x.x   | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+Users should send an email to bsergean@gmail.com to report a vulnerability.

appveyor.yml

@@ -1,10 +1,22 @@
 image:
 - Visual Studio 2017
-- Ubuntu
 
 install:
-- ls -al
+- cd C:\Tools\vcpkg
+- git pull
+- .\bootstrap-vcpkg.bat
+- cd %APPVEYOR_BUILD_FOLDER%
 - cmd: call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
-- python test/run.py
+- vcpkg install zlib:x64-windows
+- vcpkg install mbedtls:x64-windows
+- mkdir build
+- cd build
+- cmake -DCMAKE_TOOLCHAIN_FILE=c:/tools/vcpkg/scripts/buildsystems/vcpkg.cmake -DUSE_WS=1 -DUSE_TEST=1 -DUSE_TLS=1 -G"NMake Makefiles" ..
+- nmake
+- cd ..
+- cd test
+- ..\build\test\ixwebsocket_unittest.exe
+
+cache: c:\tools\vcpkg\installed\
 
 build: off

doc/redis_conf_2019/makefile

@@ -1,2 +0,0 @@
-all:
-	(cd .. ; make docker && make docker_push)

doc/redis_conf_2019/remark-latest.min.js

@@ -1,18 +0,0 @@
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-containerLayout:'<div class="remark-notes-area">\n  <div class="remark-top-area">\n    <div class="remark-toolbar">\n      <a class="remark-toolbar-link" href="#increase">+</a>\n      <a class="remark-toolbar-link" href="#decrease">-</a>\n      <span class="remark-toolbar-timer"></span>\n    </div>\n  </div>\n  <div class="remark-bottom-area">\n    <div class="remark-notes-current-area">\n      <div class="remark-toggle">Notes for current slide</div>\n      <div class="remark-notes"></div>\n    </div>\n    <div class="remark-notes-preview-area">\n      <div class="remark-toggle">Notes for next slide</div>\n      <div class="remark-notes-preview"></div>\n    </div>\n  </div>\n</div>\n<div class="remark-slides-area"></div>\n<div class="remark-preview-area"></div>\n<div class="remark-backdrop"></div>\n<div class="remark-pause">\n  <div class="remark-pause-lozenge">\n    <span>Paused</span>\n  </div>\n</div>\n<div class="remark-help">\n  <div class="remark-help-content">\n    <h1>Help</h1>\n    <p><b>Keyboard shortcuts</b></p>\n    <table class="light-keys">\n      <tr>\n        <td>\n          <span class="key"><b>&uarr;</b></span>,\n          <span class="key"><b>&larr;</b></span>,\n          <span class="key">Pg Up</span>,\n          <span class="key">k</span>\n        </td>\n        <td>Go to previous slide</td>\n      </tr>\n      <tr>\n        <td>\n          <span class="key"><b>&darr;</b></span>,\n          <span class="key"><b>&rarr;</b></span>,\n          <span class="key">Pg Dn</span>,\n          <span class="key">Space</span>,\n          <span class="key">j</span>\n        </td>\n        <td>Go to next slide</td>\n      </tr>\n      <tr>\n        <td>\n          <span class="key">Home</span>\n        </td>\n        <td>Go to first slide</td>\n      </tr>\n      <tr>\n        <td>\n          <span class="key">End</span>\n        </td>\n        <td>Go to last slide</td>\n      </tr>\n      <tr>\n        <td>\n          Number + <span class="key">Return</span>\n        </td>\n        <td>Go to specific slide</td>\n      </tr>\n      <tr>\n        <td>\n          <span class="key">b</span>&nbsp;/\n          <span class="key">m</span>&nbsp;/\n          <span class="key">f</span>\n        </td>\n        <td>Toggle blackout / mirrored / fullscreen mode</td>\n      </tr>\n      <tr>\n        <td>\n          <span class="key">c</span>\n        </td>\n        <td>Clone slideshow</td>\n      </tr>\n      <tr>\n        <td>\n          <span class="key">p</span>\n        </td>\n        <td>Toggle presenter mode</td>\n      </tr>\n      <tr>\n        <td>\n          <span class="key">t</span>\n        </td>\n        <td>Restart the presentation timer</td>\n      </tr>\n      <tr>\n        <td>\n          <span class="key">?</span>,\n          <span class="key">h</span>\n        </td>\n        <td>Toggle this help</td>\n      </tr>\n    </table>\n  </div>\n  <div class="content dismiss">\n    <table class="light-keys">\n      <tr>\n        <td>\n          <span class="key">Esc</span>\n        </td>\n        <td>Back to slideshow</td>\n      </tr>\n    </table>\n  </div>\n</div>\n'}},{}],23:[function(e,t,a){function r(e,t){var a=this;a.events=e,a.slideshow=t,a.ratio=s(t),a.dimensions=n(a.ratio),a.events.on("propertiesChanged",function(e){e.hasOwnProperty("ratio")&&(a.ratio=s(t),a.dimensions=n(a.ratio))})}function s(e){var t,a=e.getRatio().split(":");return t={width:parseInt(a[0],10),height:parseInt(a[1],10)},t.ratio=t.width/t.height,t}function n(e){return{width:Math.floor(i/o*e.ratio),height:l}}var i=908,l=681,o=i/l;t.exports=r,r.prototype.scaleToFit=function(e,t){var a,r,s,n,i,l=this,o=t.clientHeight,c=t.clientWidth,d=l.ratio,m=l.dimensions;a=c/d.width>o/d.height?o/m.height:c/m.width,r=m.width*a,s=m.height*a,n=(c-r)/2,i=(o-s)/2,e.style["-webkit-transform"]="scale("+a+")",e.style.MozTransform="scale("+a+")",e.style.left=Math.max(n,0)+"px",e.style.top=Math.max(i,0)+"px"}},{}],24:[function(e,t,a){a.addClass=function(e,t){e.className=a.getClasses(e).concat([t]).join(" ")},a.removeClass=function(e,t){e.className=a.getClasses(e).filter(function(e){return e!==t}).join(" ")},a.toggleClass=function(e,t){var r=a.getClasses(e),s=r.indexOf(t);s!==-1?r.splice(s,1):r.push(t),e.className=r.join(" ")},a.getClasses=function(e){return e.className.split(" ").filter(function(e){return""!==e})},a.hasClass=function(e,t){return a.getClasses(e).indexOf(t)!==-1},a.getPrefixedProperty=function(e,t){var a=t[0].toUpperCase()+t.slice(1);return e[t]||e["moz"+a]||e["webkit"+a]}},{}],25:[function(e,t,a){function r(e,t,a){var r=this;r.events=e,r.element=t,r.slideViewsAccessor=a,r.configureElements(),e.on("showSlide",function(e){r.showSlide(e)})}e("../converter");t.exports=r,r.prototype.showSlide=function(e){var t=this,a=t.slideViewsAccessor(),r=a[e],s=a[e+1];t.notesElement.innerHTML=r.notesElement.innerHTML,s?t.notesPreviewElement.innerHTML=s.notesElement.innerHTML:t.notesPreviewElement.innerHTML=""},r.prototype.configureElements=function(){var 
Line truncated

docker-compose.yml

@@ -1,21 +1,67 @@
 version: "3"
 services:
-  ws:
+  # snake:
+  #   image: bsergean/ws:build
+  #   entrypoint: ws snake --port 8767 --host 0.0.0.0 --redis_hosts redis1
+  #   ports:
+  #     - "8767:8767"
+  #   networks:
+  #     - ws-net
+  #   depends_on:
+  #     - redis1
+
+  # proxy:
+  #   image: bsergean/ws:build
+  #   entrypoint: strace ws proxy_server --remote_host 'wss://cobra.addsrv.com' --host 0.0.0.0 --port 8765 -v
+  #   ports:
+  #     - "8765:8765"
+  #   networks:
+  #     - ws-net
+
+  #pyproxy:
+  #  image: bsergean/ws_proxy:build
+  #  entrypoint: /usr/bin/ws_proxy.py --remote_url 'wss://cobra.addsrv.com' --host 0.0.0.0 --port 8765
+  #  ports:
+  #    - "8765:8765"
+  #  networks:
+  #    - ws-net
+
+  #      #  ws:
+  #      #    security_opt:
+  #      #    - seccomp:unconfined
+  #      #    cap_add:
+  #      #    - SYS_PTRACE
+  #      #    stdin_open: true
+  #      #    tty: true
+  #      #    image: bsergean/ws:build
+  #      #    entrypoint: sh
+  #      #    networks:
+  #      #      - ws-net
+  #      #    depends_on:
+  #      #      - redis1
+  #      #
+  #      #  redis1:
+  #      #    image: redis:alpine
+  #      #    networks:
+  #      #      - ws-net
+  #      #
+  #      #  statsd:
+  #      #    image: jaconel/statsd
+  #      #    ports:
+  #      #      - "8125:8125"
+  #      #    environment:
+  #      #      - STATSD_DUMP_MSG=true
+  #      #      - GRAPHITE_HOST=127.0.0.1
+  #      #    networks:
+  #      #      - ws-net
+
+  compile:
+    image: alpine
+    entrypoint: sh
     stdin_open: true
     tty: true
-    image: bsergean/ws:build
-    ports:
-      - "8765:8765"
-    entrypoint: bash
-    networks:
-      - ws-net
-    depends_on:
-      - redis1
-
-  redis1:
-    image: redis:alpine
-    networks:
-      - ws-net
+    volumes:
+      - /Users/bsergeant/src/foss:/home/bsergean/src/foss
 
 networks:
   ws-net:

docker/Dockerfile.alpine

@@ -0,0 +1,39 @@
+FROM alpine:3.11 as build
+
+RUN apk add --no-cache \
+    gcc g++ musl-dev linux-headers \
+    cmake mbedtls-dev make zlib-dev
+
+RUN addgroup -S app && \
+    adduser -S -G app app && \
+    chown -R app:app /opt && \
+    chown -R app:app /usr/local
+
+# There is a bug in CMake where we cannot build from the root top folder
+# So we build from /opt
+COPY --chown=app:app . /opt
+WORKDIR /opt
+
+USER app
+RUN make ws_mbedtls_install && \
+    sh tools/trim_repo_for_docker.sh
+
+FROM alpine:3.11 as runtime
+
+RUN apk add --no-cache libstdc++ mbedtls ca-certificates && \
+    addgroup -S app && \
+    adduser -S -G app app
+
+COPY --chown=app:app --from=build /usr/local/bin/ws /usr/local/bin/ws
+
+# COPY --chown=app:app --from=build /opt /opt
+
+RUN chmod +x /usr/local/bin/ws && \
+    ldd /usr/local/bin/ws
+
+# Now run in usermode
+USER app
+WORKDIR /home/app
+
+ENTRYPOINT ["ws"]
+EXPOSE 8008

docker/Dockerfile.centos

@@ -0,0 +1,41 @@
+FROM centos:8 as build
+
+RUN yum install -y gcc-c++ make cmake zlib-devel openssl-devel redhat-rpm-config
+
+RUN yum install -y epel-release
+RUN yum install -y mbedtls-devel
+
+RUN groupadd app && useradd -g app app
+RUN chown -R app:app /opt
+RUN chown -R app:app /usr/local
+
+# There is a bug in CMake where we cannot build from the root top folder
+# So we build from /opt
+COPY --chown=app:app . /opt
+WORKDIR /opt
+
+USER app
+RUN [ "make", "ws_mbedtls_install" ]
+RUN [ "rm", "-rf", "build" ]
+
+FROM centos:8 as runtime
+
+RUN yum install -y gdb strace
+
+RUN yum install -y epel-release
+RUN yum install -y mbedtls
+
+RUN groupadd app && useradd -g app app
+COPY --chown=app:app --from=build /usr/local/bin/ws /usr/local/bin/ws
+RUN chmod +x /usr/local/bin/ws
+RUN ldd /usr/local/bin/ws
+
+# Copy source code for gcc
+COPY --chown=app:app --from=build /opt /opt
+
+# Now run in usermode
+USER app
+WORKDIR /home/app
+
+ENTRYPOINT ["ws"]
+EXPOSE 8008

docker/Dockerfile.debian

@@ -0,0 +1,52 @@
+# Build time
+FROM debian:buster as build
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update
+RUN apt-get -y install wget
+RUN mkdir -p /tmp/cmake
+WORKDIR /tmp/cmake
+RUN wget https://github.com/Kitware/CMake/releases/download/v3.14.0/cmake-3.14.0-Linux-x86_64.tar.gz
+RUN tar zxf cmake-3.14.0-Linux-x86_64.tar.gz
+
+RUN apt-get -y install g++
+RUN apt-get -y install libssl-dev
+RUN apt-get -y install libz-dev
+RUN apt-get -y install make
+
+COPY . .
+
+ARG CMAKE_BIN_PATH=/tmp/cmake/cmake-3.14.0-Linux-x86_64/bin
+ENV PATH="${CMAKE_BIN_PATH}:${PATH}"
+
+RUN ["make"]
+
+# Runtime
+FROM debian:buster as runtime
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update
+# Runtime
+RUN apt-get install -y libssl1.1
+RUN apt-get install -y ca-certificates
+RUN ["update-ca-certificates"]
+
+# Debugging
+RUN apt-get install -y strace
+RUN apt-get install -y procps
+RUN apt-get install -y htop
+
+RUN adduser --disabled-password --gecos '' app
+COPY --chown=app:app --from=build /usr/local/bin/ws /usr/local/bin/ws
+RUN chmod +x /usr/local/bin/ws
+RUN ldd /usr/local/bin/ws
+
+# Now run in usermode
+USER app
+WORKDIR /home/app
+
+COPY --chown=app:app ws/snake/appsConfig.json .
+COPY --chown=app:app ws/cobraMetricsSample.json .
+
+ENTRYPOINT ["ws"]
+CMD ["--help"]

docker/Dockerfile.fedora

@@ -0,0 +1,43 @@
+FROM fedora:30 as build
+
+RUN yum install -y gcc-g++
+RUN yum install -y cmake
+RUN yum install -y make
+RUN yum install -y openssl-devel
+
+RUN yum install -y wget
+RUN mkdir -p /tmp/cmake
+WORKDIR /tmp/cmake
+RUN wget https://github.com/Kitware/CMake/releases/download/v3.14.0/cmake-3.14.0-Linux-x86_64.tar.gz
+RUN tar zxf cmake-3.14.0-Linux-x86_64.tar.gz
+
+ARG CMAKE_BIN_PATH=/tmp/cmake/cmake-3.14.0-Linux-x86_64/bin
+ENV PATH="${CMAKE_BIN_PATH}:${PATH}"
+
+RUN yum install -y python
+RUN yum install -y libtsan
+RUN yum install -y zlib-devel
+
+COPY . .
+# RUN ["make", "test"]
+RUN ["make"]
+
+# Runtime
+FROM fedora:30 as runtime
+
+RUN yum install -y libtsan
+
+RUN groupadd app && useradd -g app app
+COPY --chown=app:app --from=build /usr/local/bin/ws /usr/local/bin/ws
+RUN chmod +x /usr/local/bin/ws
+RUN ldd /usr/local/bin/ws
+
+# Now run in usermode
+USER app
+WORKDIR /home/app
+
+COPY --chown=app:app ws/snake/appsConfig.json .
+COPY --chown=app:app ws/cobraMetricsSample.json .
+
+ENTRYPOINT ["ws"]
+CMD ["--help"]

docker/Dockerfile.ubuntu_bionic

@@ -1,30 +1,23 @@
-FROM debian:buster
+# Build time
+FROM ubuntu:bionic as build
 
 ENV DEBIAN_FRONTEND noninteractive
-RUN apt-get update 
+RUN apt-get update
+RUN apt-get -y install wget
+RUN mkdir -p /tmp/cmake
+WORKDIR /tmp/cmake
+RUN wget https://github.com/Kitware/CMake/releases/download/v3.14.0/cmake-3.14.0-Linux-x86_64.tar.gz
+RUN tar zxf cmake-3.14.0-Linux-x86_64.tar.gz
 
-RUN apt-get -y install g++ 
+RUN apt-get -y install g++
 RUN apt-get -y install libssl-dev
 RUN apt-get -y install libz-dev
 RUN apt-get -y install make
-
-RUN apt-get -y install wget 
-RUN mkdir -p /tmp/cmake
-WORKDIR /tmp/cmake
-RUN wget https://github.com/Kitware/CMake/releases/download/v3.14.0/cmake-3.14.0-Linux-x86_64.tar.gz 
-RUN tar zxf cmake-3.14.0-Linux-x86_64.tar.gz
-
-RUN adduser app 
+RUN apt-get -y install python
 
 COPY . .
 
 ARG CMAKE_BIN_PATH=/tmp/cmake/cmake-3.14.0-Linux-x86_64/bin
 ENV PATH="${CMAKE_BIN_PATH}:${PATH}"
 
-RUN ["make"]
-
-# Now run in usermode
-USER app
-
-EXPOSE 8765
-CMD ["bash"]
+RUN ["make", "ws"]

docker/Dockerfile.ubuntu_disco

@@ -0,0 +1,24 @@
+# Build time
+FROM ubuntu:disco as build
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update
+RUN apt-get -y install wget
+RUN mkdir -p /tmp/cmake
+WORKDIR /tmp/cmake
+RUN wget https://github.com/Kitware/CMake/releases/download/v3.14.0/cmake-3.14.0-Linux-x86_64.tar.gz
+RUN tar zxf cmake-3.14.0-Linux-x86_64.tar.gz
+
+RUN apt-get -y install g++
+RUN apt-get -y install libssl-dev
+RUN apt-get -y install libz-dev
+RUN apt-get -y install make
+RUN apt-get -y install python
+
+COPY . .
+
+ARG CMAKE_BIN_PATH=/tmp/cmake/cmake-3.14.0-Linux-x86_64/bin
+ENV PATH="${CMAKE_BIN_PATH}:${PATH}"
+
+# RUN ["make", "test"]
+CMD ["sh"]

docker/Dockerfile.ubuntu_xenial

@@ -0,0 +1,24 @@
+# Build time
+FROM ubuntu:xenial as build
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update
+RUN apt-get -y install wget
+RUN mkdir -p /tmp/cmake
+WORKDIR /tmp/cmake
+RUN wget https://github.com/Kitware/CMake/releases/download/v3.14.0/cmake-3.14.0-Linux-x86_64.tar.gz
+RUN tar zxf cmake-3.14.0-Linux-x86_64.tar.gz
+
+RUN apt-get -y install g++
+RUN apt-get -y install libssl-dev
+RUN apt-get -y install libz-dev
+RUN apt-get -y install make
+RUN apt-get -y install python
+
+COPY . .
+
+ARG CMAKE_BIN_PATH=/tmp/cmake/cmake-3.14.0-Linux-x86_64/bin
+ENV PATH="${CMAKE_BIN_PATH}:${PATH}"
+
+# RUN ["make"]
+RUN ["make", "test"]

docs/CHANGELOG.md

@@ -0,0 +1,655 @@
+# Changelog
+All changes to this project will be documented in this file.
+
+## [9.2.1] - 2020-04-04
+
+(windows) when using OpenSSL, the system store is used to populate the cacert. No need to ship a cacert.pem file with your app.
+
+## [9.2.0] - 2020-04-04
+
+(windows) ci: windows build with TLS (mbedtls) + verify that we can be build with OpenSSL
+
+## [9.1.9] - 2020-03-30
+
+(cobra to statsd bot) add ability to extract a numerical value and send a timer event to statsd, with the --timer option
+
+## [9.1.8] - 2020-03-29
+
+(cobra to statsd bot) bot init was missing + capture socket error
+
+## [9.1.7] - 2020-03-29
+
+(cobra to statsd bot) add ability to extract a numerical value and send a gauge event to statsd, with the --gauge option
+
+## [9.1.6] - 2020-03-29
+
+(ws cobra subscriber) use a Json::StreamWriter to write to std::cout, and save one std::string allocation for each message printed
+
+## [9.1.5] - 2020-03-29
+
+(docker) trim down docker image (300M -> 12M) / binary built without symbol and size optimization, and source code not copied over
+
+## [9.1.4] - 2020-03-28
+
+(jsoncpp) update bundled copy to version 1.9.3 (at sha 3beb37ea14aec1bdce1a6d542dc464d00f4a6cec)
+
+## [9.1.3] - 2020-03-27
+
+(docker) alpine docker build with release with debug info, and bundle ca-certificates
+
+## [9.1.2] - 2020-03-26
+
+(mac ssl) rename DarwinSSL -> SecureTransport (see this too -> https://github.com/curl/curl/issues/3733)
+
+## [9.1.1] - 2020-03-26
+
+(websocket) fix data race accessing _socket object without mutex protection when calling wakeUpFromPoll in WebSocketTransport.cpp
+
+## [9.1.0] - 2020-03-26
+
+(ixcobra) add explicit event types for handshake, authentication and subscription failure, and handle those by exiting in ws_cobra_subcribe and friends
+
+## [9.0.3] - 2020-03-24
+
+(ws connect) display statistics about how much time it takes to stop the connection
+
+## [9.0.2] - 2020-03-24
+
+(socket) works with unique_ptr<Socket> instead of shared_ptr<Socket> in many places
+
+## [9.0.1] - 2020-03-24
+
+(socket) selectInterrupt member is an unique_ptr instead of being a shared_ptr
+
+## [9.0.0] - 2020-03-23
+
+(websocket) reset per-message deflate codec everytime we connect to a server/client
+
+## [8.3.4] - 2020-03-23
+
+(websocket) fix #167, a long standing issue with sending empty messages with per-message deflate extension (and hopefully other zlib bug)
+
+## [8.3.3] - 2020-03-22
+
+(cobra to statsd) port to windows and add a unittest
+
+## [8.3.2] - 2020-03-20
+
+(websocket+tls) fix hang in tls handshake which could lead to ANR, discovered through unittesting.
+
+## [8.3.1] - 2020-03-20
+
+(cobra) CobraMetricsPublisher can be configure with an ix::CobraConfig + more unittest use SSL in server + client
+
+## [8.3.0] - 2020-03-18
+
+(websocket) Simplify ping/pong based heartbeat implementation
+
+## [8.2.7] - 2020-03-17
+
+(ws) ws connect gains a new option to set the interval at which to send pings
+(ws) ws echo_server gains a new option (-p) to disable responding to pings with pongs
+
+```
+IXWebSocket$ ws connect --ping_interval 2 wss://echo.websocket.org
+Type Ctrl-D to exit prompt...
+Connecting to url: wss://echo.websocket.org
+> ws_connect: connected
+[2020-03-17 23:53:02.726] [info] Uri: /
+[2020-03-17 23:53:02.726] [info] Headers:
+[2020-03-17 23:53:02.727] [info] Connection: Upgrade
+[2020-03-17 23:53:02.727] [info] Date: Wed, 18 Mar 2020 06:45:05 GMT
+[2020-03-17 23:53:02.727] [info] Sec-WebSocket-Accept: 0gtqbxW0aVL/QI/ICpLFnRaiKgA=
+[2020-03-17 23:53:02.727] [info] sec-websocket-extensions:
+[2020-03-17 23:53:02.727] [info] Server: Kaazing Gateway
+[2020-03-17 23:53:02.727] [info] Upgrade: websocket
+[2020-03-17 23:53:04.894] [info] Received pong
+[2020-03-17 23:53:06.859] [info] Received pong
+[2020-03-17 23:53:08.881] [info] Received pong
+[2020-03-17 23:53:10.848] [info] Received pong
+[2020-03-17 23:53:12.898] [info] Received pong
+[2020-03-17 23:53:14.865] [info] Received pong
+[2020-03-17 23:53:16.890] [info] Received pong
+[2020-03-17 23:53:18.853] [info] Received pong
+
+[2020-03-17 23:53:19.388] [info]
+ws_connect: connection closed: code 1000 reason Normal closure
+
+[2020-03-17 23:53:19.502] [info] Received 208 bytes
+[2020-03-17 23:53:19.502] [info] Sent 0 bytes
+```
+
+## [8.2.6] - 2020-03-16
+
+(cobra to sentry bot + docker) default docker file uses mbedtls + ws cobra_to_sentry pass tls options to sentryClient.
+
+## [8.2.5] - 2020-03-13
+
+(cobra client) ws cobra subscribe resubscribe at latest position after being disconnected
+
+## [8.2.4] - 2020-03-13
+
+(cobra client) can subscribe with a position
+
+## [8.2.3] - 2020-03-13
+
+(cobra client) pass the message position to the subscription data callback
+
+## [8.2.2] - 2020-03-12
+
+(openssl tls backend) Fix a hand in OpenSSL when using TLS v1.3 ... by disabling TLS v1.3
+
+## [8.2.1] - 2020-03-11
+
+(cobra) IXCobraConfig struct has tlsOptions and per message deflate options
+
+## [8.2.0] - 2020-03-11
+
+(cobra) add IXCobraConfig struct to pass cobra config around
+
+## [8.1.9] - 2020-03-09
+
+(ws cobra_subscribe) add a --fluentd option to wrap a message in an enveloppe so that fluentd can recognize it
+
+## [8.1.8] - 2020-03-02
+
+(websocket server) fix regression with disabling zlib extension on the server side. If a client does not support this extension the server will handle it fine. We still need to figure out how to disable the option.
+
+## [8.1.7] - 2020-02-26
+
+(websocket) traffic tracker received bytes is message size while it should be wire size
+
+## [8.1.6] - 2020-02-26
+
+(ws_connect) display sent/received bytes statistics on exit
+
+## [8.1.5] - 2020-02-23
+
+(server) give thread name to some usual worker threads / unittest is broken !!
+
+## [8.1.4] - 2020-02-22
+
+(websocket server) fix regression from 8.1.2, where per-deflate message compression was always disabled
+
+## [8.1.3] - 2020-02-21
+
+(client + server) Fix #155 / http header parser should treat the space(s) after the : delimiter as optional. Fixing this bug made us discover that websocket sub-protocols are not properly serialiazed, but start with a ,
+
+## [8.1.2] - 2020-02-18
+
+(WebSocketServer) add option to disable deflate compression, exposed with the -x option to ws echo_server
+
+## [8.1.1] - 2020-02-18
+
+(ws cobra to statsd and sentry sender) exit if no messages are received for one minute, which is a sign that something goes wrong on the server side. That should be changed to be configurable in the future
+
+## [8.1.0] - 2020-02-13
+
+(http client + sentry minidump upload) Multipart stream closing boundary is invalid + mark some options as mandatory in the command line tools
+
+## [8.0.7] - 2020-02-12
+
+(build) remove the unused subtree which was causing some way of installing to break
+
+## [8.0.6] - 2020-01-31
+
+(snake) add an option to disable answering pongs as response to pings, to test cobra client behavior with hanged connections
+
+## [8.0.5] - 2020-01-31
+
+(IXCobraConnection) set a ping timeout of 90 seconds. If no pong messages are received as responses to ping for a while, give up and close the connection
+
+## [8.0.4] - 2020-01-31
+
+(cobra to sentry) remove noisy logging
+
+## [8.0.3] - 2020-01-30
+
+(ixcobra) check if we are authenticated in publishNext before trying to publish a message
+
+## [8.0.2] - 2020-01-28
+
+Extract severity level when emitting messages to sentry
+
+## [8.0.1] - 2020-01-28
+
+Fix bug #151 - If a socket connection is interrupted, calling stop() on the IXWebSocket object blocks until the next retry
+
+## [8.0.0] - 2020-01-26
+
+(SocketServer) add ability to bind on an ipv6 address
+
+## [7.9.6] - 2020-01-22
+
+(ws) add a dnslookup sub-command, to get the ip address of a remote host
+
+## [7.9.5] - 2020-01-14
+
+(windows) fix #144, get rid of stubbed/un-implemented windows schannel ssl backend
+
+## [7.9.4] - 2020-01-12
+
+(openssl + mbedssl) fix #140, can send large files with ws send over ssl / still broken with apple ssl
+
+## [7.9.3] - 2020-01-10
+
+(apple ssl) model write method after the OpenSSL one for consistency
+
+## [7.9.2] - 2020-01-06
+
+(apple ssl) unify read and write ssl utility code
+
+## [7.9.1] - 2020-01-06
+
+(websocket client) better error propagation when errors are detected while sending data
+(ws send) detect failures to send big files, terminate in those cases and report error
+
+## [7.9.0] - 2020-01-04
+
+(ws send) add option (-x) to disable per message deflate compression
+
+## [7.8.9] - 2020-01-04
+
+(ws send + receive) handle all message types (ping + pong + fragment) / investigate #140
+
+## [7.8.8] - 2019-12-28
+
+(mbedtls) fix related to private key file parsing and initialization
+
+## [7.8.6] - 2019-12-28
+
+(ws cobra to sentry/statsd) fix for handling null events properly for empty queues + use queue to send data to statsd
+
+## [7.8.5] - 2019-12-28
+
+(ws cobra to sentry) handle null events for empty queues
+
+## [7.8.4] - 2019-12-27
+
+(ws cobra to sentry) game is picked in a fair manner, so that all games get the same share of sent events
+
+## [7.8.3] - 2019-12-27
+
+(ws cobra to sentry) refactor queue related code into a class
+
+## [7.8.2] - 2019-12-25
+
+(ws cobra to sentry) bound the queue size used to hold up cobra messages before they are sent to sentry. Default queue size is a 100 messages. Without such limit the program runs out of memory when a subscriber receive a lot of messages that cannot make it to sentry
+
+## [7.8.1] - 2019-12-25
+
+(ws client) use correct compilation defines so that spdlog is not used as a header only library (reduce binary size and increase compilation speed)
+
+## [7.8.0] - 2019-12-24
+
+(ws client) all commands use spdlog instead of std::cerr or std::cout for logging
+
+## [7.6.5] - 2019-12-24
+
+(cobra client) send a websocket ping every 30s to keep the connection opened
+
+## [7.6.4] - 2019-12-22
+
+(client) error handling, quote url in error case when failing to parse one
+(ws) ws_cobra_publish: register callbacks before connecting
+(doc) mention mbedtls in supported ssl server backend
+
+## [7.6.3] - 2019-12-20
+
+(tls) add a simple description of the TLS configuration routine for debugging
+
+## [7.6.2] - 2019-12-20
+
+(mbedtls) correct support for using own certificate and private key
+
+## [7.6.1] - 2019-12-20
+
+(ws commands) in websocket proxy, disable automatic reconnections + in Dockerfile, use alpine 3.11
+
+## [7.6.0] - 2019-12-19
+
+(cobra) Add TLS options to all cobra commands and classes. Add example to the doc.
+
+## [7.5.8] - 2019-12-18
+
+(cobra-to-sentry) capture application version from device field
+
+## [7.5.7] - 2019-12-18
+
+(tls) Experimental TLS server support with mbedtls (windows) + process cert tlsoption (client + server)
+
+## [7.5.6] - 2019-12-18
+
+(tls servers) Make it clear that apple ssl and mbedtls backends do not support SSL in server mode
+
+## [7.5.5] - 2019-12-17
+
+(tls options client) TLSOptions struct _validated member should be initialized to false
+
+## [7.5.4] - 2019-12-16
+
+(websocket client) improve the error message when connecting to a non websocket server
+
+Before:
+
+```
+Connection error: Got bad status connecting to example.com:443, status: 200, HTTP Status line: HTTP/1.1 200 OK
+```
+
+After:
+
+```
+Connection error: Expecting status 101 (Switching Protocol), got 200 status connecting to example.com:443, HTTP Status line: HTTP/1.1 200 OK
+```
+
+## [7.5.3] - 2019-12-12
+
+(server) attempt at fixing #131 by using blocking writes in server mode
+
+## [7.5.2] - 2019-12-11
+
+(ws) cobra to sentry - created events with sentry tags based on tags present in the cobra messages
+
+## [7.5.1] - 2019-12-06
+
+(mac) convert SSL errors to utf8
+
+## [7.5.0] - 2019-12-05
+
+- (ws) cobra to sentry. Handle Error 429 Too Many Requests and politely wait before sending more data to sentry.
+
+In the example below sentry we are sending data too fast, sentry asks us to slow down which we do. Notice how the sent count stop increasing, while we are waiting for 41 seconds.
+
+```
+[2019-12-05 15:50:33.759] [info] messages received 2449 sent 3
+[2019-12-05 15:50:34.759] [info] messages received 5533 sent 7
+[2019-12-05 15:50:35.759] [info] messages received 8612 sent 11
+[2019-12-05 15:50:36.759] [info] messages received 11562 sent 15
+[2019-12-05 15:50:37.759] [info] messages received 14410 sent 19
+[2019-12-05 15:50:38.759] [info] messages received 17236 sent 23
+[2019-12-05 15:50:39.282] [error] Error sending data to sentry: 429
+[2019-12-05 15:50:39.282] [error] Body: {"exception":[{"stacktrace":{"frames":[{"filename":"WorldScene.lua","function":"WorldScene.lua:1935","lineno":1958},{"filename":"WorldScene.lua","function":"onUpdate_WorldCam","lineno":1921},{"filename":"WorldMapTile.lua","function":"__index","lineno":239}]},"value":"noisytypes: Attempt to call nil(nil,2224139838)!"}],"platform":"python","sdk":{"name":"ws","version":"1.0.0"},"tags":[["game","niso"],["userid","107638363"],["environment","live"]],"timestamp":"2019-12-05T23:50:39Z"}
+
+[2019-12-05 15:50:39.282] [error] Response: {"error_name":"rate_limit","error":"Creation of this event was denied due to rate limiting"}
+[2019-12-05 15:50:39.282] [warning] Error 429 - Too Many Requests. ws will sleep and retry after 41 seconds
+[2019-12-05 15:50:39.760] [info] messages received 18839 sent 25
+[2019-12-05 15:50:40.760] [info] messages received 18839 sent 25
+[2019-12-05 15:50:41.760] [info] messages received 18839 sent 25
+[2019-12-05 15:50:42.761] [info] messages received 18839 sent 25
+[2019-12-05 15:50:43.762] [info] messages received 18839 sent 25
+[2019-12-05 15:50:44.763] [info] messages received 18839 sent 25
+[2019-12-05 15:50:45.768] [info] messages received 18839 sent 25
+```
+
+## [7.4.5] - 2019-12-03
+
+- (ws) #125 / fix build problem when jsoncpp is not installed locally
+
+## [7.4.4] - 2019-12-03
+
+- (ws) #125 / cmake detects an already installed jsoncpp and will try to use this one if present
+
+## [7.4.3] - 2019-12-03
+
+- (http client) use std::unordered_map instead of std::map for HttpParameters and HttpFormDataParameters class aliases
+
+## [7.4.2] - 2019-12-02
+
+- (client) internal IXDNSLookup class requires a valid cancellation request function callback to be passed in
+
+## [7.4.1] - 2019-12-02
+
+- (client) fix an overflow in the exponential back off code
+
+## [7.4.0] - 2019-11-25
+
+- (http client) Add support for multipart HTTP POST upload
+- (ixsentry) Add support for uploading a minidump to sentry
+
+## [7.3.5] - 2019-11-20
+
+- On Darwin SSL, add ability to skip peer verification.
+
+## [7.3.4] - 2019-11-20
+
+- 32-bits compile fix, courtesy of @fcojavmc
+
+## [7.3.1] - 2019-11-16
+
+- ws proxy_server / remote server close not forwarded to the client
+
+## [7.3.0] - 2019-11-15
+
+- New ws command: `ws proxy_server`.
+
+## [7.2.2] - 2019-11-01
+
+- Tag a release + minor reformating.
+
+## [7.2.1] - 2019-10-26
+
+- Add unittest to IXSentryClient to lua backtrace parsing code
+
+## [7.2.0] - 2019-10-24
+
+- Add cobra_metrics_to_redis sub-command to create streams for each cobra metric event being received.
+
+## [7.1.0] - 2019-10-13
+
+- Add client support for websocket subprotocol. Look for the new addSubProtocol method for details.
+
+## [7.0.0] - 2019-10-01
+
+- TLS support in server code, only implemented for the OpenSSL SSL backend for now.
+
+## [6.3.4] - 2019-09-30
+
+- all ws subcommands propagate tls options to servers (unimplemented) or ws or http client (implemented) (contributed by Matt DeBoer)
+
+## [6.3.3] - 2019-09-30
+
+- ws has a --version option
+
+## [6.3.2] - 2019-09-29
+
+- (http + websocket clients) can specify cacert and some other tls options (not implemented on all backend). This makes it so that server certs can finally be validated on windows.
+
+## [6.3.1] - 2019-09-29
+
+- Add ability to use OpenSSL on apple platforms.
+
+## [6.3.0] - 2019-09-28
+
+- ixcobra / fix crash in CobraConnection::publishNext when the queue is empty + handle CobraConnection_PublishMode_Batch in CobraMetricsThreadedPublisher
+
+## [6.2.9] - 2019-09-27
+
+- mbedtls fixes / the unittest now pass on macOS, and hopefully will on Windows/AppVeyor as well.
+
+## [6.2.8] - 2019-09-26
+
+- Http server: add options to ws https to redirect all requests to a given url. POST requests will get a 200 and an empty response.
+
+```
+ws httpd -L --redirect_url https://www.google.com
+```
+
+## [6.2.7] - 2019-09-25
+
+- Stop having ws send subcommand send a binary message in text mode, which would cause error in `make ws_test` shell script test.
+
+## [6.2.6] - 2019-09-24
+
+- Fix 2 race conditions detected with TSan, one in CobraMetricsPublisher::push and another one in WebSocketTransport::sendData (that one was bad).
+
+## [6.2.5] - 2019-09-23
+
+- Add simple Redis Server which is only capable of doing publish / subscribe. New ws redis_server sub-command to use it. The server is used in the unittest, so that we can run on CI in environment where redis isn not available like github actions env.
+
+## [6.2.4] - 2019-09-22
+
+- Add options to configure TLS ; contributed by Matt DeBoer. Only implemented for OpenSSL TLS backend for now.
+
+## [6.2.3] - 2019-09-21
+
+- Fix crash in the Linux unittest in the HTTP client code, in Socket::readBytes
+- Cobra Metrics Publisher code returns the message id of the message that got published, to be used to validated that it got sent properly when receiving an ack.
+
+## [6.2.2] - 2019-09-19
+
+- In DNS lookup code, make sure the weak pointer we use lives through the expected scope (if branch)
+
+## [6.2.1] - 2019-09-17
+
+- On error while doing a client handshake, additionally display port number next to the host name
+
+## [6.2.0] - 2019-09-09
+
+- websocket and http server: server does not close the bound client socket in many cases
+- improve some websocket error messages
+- add a utility function with unittest to parse status line and stop using scanf which triggers warnings on Windows
+- update ws CLI11 (our command line argument parsing library) to the latest, which fix a compiler bug about optional
+
+## [6.1.0] - 2019-09-08
+
+- move poll wrapper on top of select (only used on Windows) to the ix namespace
+
+## [6.0.1] - 2019-09-05
+
+- add cobra metrics publisher + server unittest
+- add cobra client + server unittest
+- ws snake (cobra simple server) add basic support for unsubscription + subscribe send the proper subscription data + redis client subscription can be cancelled
+- IXCobraConnection / pdu handlers can crash if they receive json data which is not an object
+
+## [6.0.0] - 2019-09-04
+
+- all client autobahn test should pass !
+- zlib/deflate has a bug with windowsbits == 8, so we silently upgrade it to 9/ (fix autobahn test 13.X which uses 8 for the windows size)
+
+## [5.2.0] - 2019-09-04
+
+- Fragmentation: for sent messages which are compressed, the continuation fragments should not have the rsv1 bit set (fix all autobahn tests for zlib compression 12.X)
+- Websocket Server / do a case insensitive string search when looking for an Upgrade header whose value is websocket. (some client use WebSocket with some upper-case characters)
+
+## [5.1.9] - 2019-09-03
+
+- ws autobahn / report progress with spdlog::info to get timing info
+- ws autobahn / use condition variables for stopping test case + add more logging on errors
+
+## [5.1.8] - 2019-09-03
+
+- Per message deflate/compression: handle fragmented messages (fix autobahn test: 12.1.X and probably others)
+
+## [5.1.7] - 2019-09-03
+
+- Receiving invalid UTF-8 TEXT message should fail and close the connection (fix remaining autobahn test: 6.X UTF-8 Handling)
+
+## [5.1.6] - 2019-09-03
+
+- Sending invalid UTF-8 TEXT message should fail and close the connection (fix remaining autobahn test: 6.X UTF-8 Handling)
+- Fix failing unittest which was sending binary data in text mode with WebSocket::send to call properly call WebSocket::sendBinary instead.
+- Validate that the reason is proper utf-8. (fix autobahn test 7.5.1)
+- Validate close codes. Autobahn 7.9.*
+
+## [5.1.5] - 2019-09-03
+
+Framentation: data and continuation blocks received out of order (fix autobahn test: 5.9 through 5.20 Fragmentation)
+
+## [5.1.4] - 2019-09-03
+
+Sending invalid UTF-8 TEXT message should fail and close the connection (fix **tons** of autobahn test: 6.X UTF-8 Handling)
+
+## [5.1.3] - 2019-09-03
+
+Message type (TEXT or BINARY) is invalid for received fragmented messages (fix autobahn test: 5.3 through 5.8 Fragmentation)
+
+## [5.1.2] - 2019-09-02
+
+Ping and Pong messages cannot be fragmented (fix autobahn test: 5.1 and 5.2 Fragmentation)
+
+## [5.1.1] - 2019-09-01
+
+Close connections when reserved bits are used (fix autobahn test: 3.X Reserved Bits)
+
+## [5.1.0] - 2019-08-31
+
+- ws autobahn / Add code to test websocket client compliance with the autobahn test-suite
+- add utf-8 validation code, not hooked up properly yet
+- Ping received with a payload too large (> 125 bytes) trigger a connection closure
+- cobra / add tracking about published messages
+- cobra / publish returns a message id, that can be used when
+- cobra / new message type in the message received handler when publish/ok is received (can be used to implement an ack system).
+
+## [5.0.9] - 2019-08-30
+
+- User-Agent header is set when not specified.
+- New option to cap the max wait between reconnection attempts. Still default to 10s. (setMaxWaitBetweenReconnectionRetries).
+
+```
+ws connect --max_wait 5000 ws://example.com # will only wait 5 seconds max between reconnection attempts
+```
+
+## [5.0.7] - 2019-08-23
+- WebSocket: add new option to pass in extra HTTP headers when connecting.
+- `ws connect` add new option (-H, works like [curl](https://stackoverflow.com/questions/356705/how-to-send-a-header-using-a-http-request-through-a-curl-call)) to pass in extra HTTP headers when connecting
+
+If you run against `ws echo_server` you will see the headers being received printed in the terminal.
+```
+ws connect -H "foo: bar" -H "baz: buz" ws://127.0.0.1:8008
+```
+
+- CobraConnection: sets a unique id field for all messages sent to [cobra](https://github.com/machinezone/cobra).
+- CobraConnection: sets a counter as a field for each event published.
+
+## [5.0.6] - 2019-08-22
+- Windows: silly compile error (poll should be in the global namespace)
+
+## [5.0.5] - 2019-08-22
+- Windows: use select instead of WSAPoll, through a poll wrapper
+
+## [5.0.4] - 2019-08-20
+- Windows build fixes (there was a problem with the use of ::poll that has a different name on Windows (WSAPoll))
+
+## [5.0.3] - 2019-08-14
+- CobraMetricThreadedPublisher _enable flag is an atomic, and CobraMetricsPublisher is enabled by default
+
+## [5.0.2] - 2019-08-01
+- ws cobra_subscribe has a new -q (quiet) option
+- ws cobra_subscribe knows to and display msg stats (count and # of messages received per second)
+- ws cobra_subscribe, cobra_to_statsd and cobra_to_sentry commands have a new option, --filter to restrict the events they want to receive
+
+## [5.0.1] - 2019-07-25
+- ws connect command has a new option to send in binary mode (still default to text)
+- ws connect command has readline history thanks to libnoise-cpp. Now ws connect one can use using arrows to lookup previous sent messages and edit them
+
+## [5.0.0] - 2019-06-23
+### Changed
+- New HTTP server / still very early. ws gained a new command, httpd can run a simple webserver serving local files.
+- IXDNSLookup. Uses weak pointer + smart_ptr + shared_from_this instead of static sets + mutex to handle object going away before dns lookup has resolved
+- cobra_to_sentry / backtraces are reversed and line number is not extracted correctly
+- mbedtls and zlib are searched with find_package, and we use the vendored version if nothing is found
+- travis CI uses g++ on Linux
+
+## [4.0.0] - 2019-06-09
+### Changed
+- WebSocket::send() sends message in TEXT mode by default
+- WebSocketMessage sets a new binary field, which tells whether the received incoming message is binary or text
+- WebSocket::send takes a third arg, binary which default to true (can be text too)
+- WebSocket callback only take one object, a const ix::WebSocketMessagePtr& msg
+- Add explicit WebSocket::sendBinary method
+- New headers + WebSocketMessage class to hold message data, still not used across the board
+- Add test/compatibility folder with small servers and clients written in different languages and different libraries to test compatibility.
+- ws echo_server has a -g option to print a greeting message on connect
+- IXSocketMbedTLS: better error handling in close and connect
+
+## [3.1.2] - 2019-06-06
+### Added
+- ws connect has a -x option to disable per message deflate
+- Add WebSocket::disablePerMessageDeflate() option.
+
+## [3.0.0] - 2019-06-xx
+### Changed
+- TLS, aka SSL works on Windows (websocket and http clients)
+- ws command line tool build on Windows
+- Async API for HttpClient
+- HttpClient API changed to use shared_ptr for response and request

docs/build.md

@@ -0,0 +1,76 @@
+## Build
+
+### CMake
+
+CMakefiles for the library and the examples are available. This library has few dependencies, so it is possible to just add the source files into your project. Otherwise the usual way will suffice.
+
+```
+mkdir build # make a build dir so that you can build out of tree.
+cd build
+cmake -DUSE_TLS=1 ..
+make -j
+make install # will install to /usr/local on Unix, on macOS it is a good idea to sudo chown -R `whoami`:staff /usr/local
+```
+
+Headers and a static library will be installed to the target dir.
+There is a unittest which can be executed by typing `make test`.
+
+Options for building:
+
+* `-DUSE_TLS=1` will enable TLS support
+* `-DUSE_MBED_TLS=1` will use [mbedlts](https://tls.mbed.org/) for the TLS support (default on Windows)
+* `-DUSE_WS=1` will build the ws interactive command line tool
+
+If you are on Windows, look at the [appveyor](https://github.com/machinezone/IXWebSocket/blob/master/appveyor.yml) file that has instructions for building dependencies.
+
+It is also possible to externally include the project, so that everything is fetched over the wire when you build like so:
+
+```
+    ExternalProject_Add(
+        IXWebSocket
+        GIT_REPOSITORY https://github.com/machinezone/IXWebSocket.git
+        ...
+    )
+```
+
+### vcpkg
+
+It is possible to get IXWebSocket through Microsoft [vcpkg](https://github.com/microsoft/vcpkg).
+
+```
+vcpkg install ixwebsocket
+```
+
+### Conan
+
+[ ![Download](https://api.bintray.com/packages/conan/conan-center/ixwebsocket%3A_/images/download.svg) ](https://bintray.com/conan/conan-center/ixwebsocket%3A_/_latestVersion)
+
+Conan is currently supported through a recipe in [Conan Center](https://github.com/conan-io/conan-center-index/tree/master/recipes/ixwebsocket) ([Bintray entry](https://bintray.com/conan/conan-center/ixwebsocket%3A_)).
+
+Package reference
+
+* Conan 1.21.0 and up: `ixwebsocket/7.9.2`
+* Earlier versions: `ixwebsocket/7.9.2@_/_`
+
+Note that the version listed here might not be the latest one. See Bintray or the recipe itself for the latest version. If you're migrating from the previous, custom Bintray remote, note that the package reference _has_ to be lower-case.
+
+### Docker
+
+There is a Dockerfile for running the unittest on Linux, and to run the `ws` tool. It is also available on the docker registry.
+
+```
+docker run bsergean/ws
+```
+
+To use docker-compose you must make a docker container first.
+
+```
+$ make docker
+...
+$ docker compose up &
+...
+$ docker exec -it ixwebsocket_ws_1 bash
+app@ca2340eb9106:~$ ws --help
+ws is a websocket tool
+...
+```

docs/cobra.md

@@ -0,0 +1,81 @@
+## General
+
+[cobra](https://github.com/machinezone/cobra) is a real time messaging server. The `ws` utility can run a cobra server (named snake), and has client to publish and subscribe to a cobra server.
+
+Bring up 3 terminals and run a server, a publisher and a subscriber in each one. As you publish data you should see it being received by the subscriber. You can run `redis-cli MONITOR` too to see how redis is being used.
+
+### Server
+
+You will need to have a redis server running locally. To run the server:
+
+```bash
+$ cd <ixwebsocket-top-level-folder>/ixsnake/ixsnake
+$ ws snake
+{
+  "apps": {
+    "FC2F10139A2BAc53BB72D9db967b024f": {
+      "roles": {
+        "_sub": {
+          "secret": "66B1dA3ED5fA074EB5AE84Dd8CE3b5ba"
+        },
+        "_pub": {
+          "secret": "1c04DB8fFe76A4EeFE3E318C72d771db"
+        }
+      }
+    }
+  }
+}
+
+redis host: 127.0.0.1
+redis password:
+redis port: 6379
+```
+
+### Publisher
+
+```bash
+$ cd <ixwebsocket-top-level-folder>/ws
+$ ws cobra_publish --appkey FC2F10139A2BAc53BB72D9db967b024f --endpoint ws://127.0.0.1:8008 --rolename _pub --rolesecret 1c04DB8fFe76A4EeFE3E318C72d771db test_channel cobraMetricsSample.json
+[2019-11-27 09:06:12.980] [info] Publisher connected
+[2019-11-27 09:06:12.980] [info] Connection: Upgrade
+[2019-11-27 09:06:12.980] [info] Sec-WebSocket-Accept: zTtQKMKbvwjdivURplYXwCVUCWM=
+[2019-11-27 09:06:12.980] [info] Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
+[2019-11-27 09:06:12.980] [info] Server: ixwebsocket/7.4.0 macos ssl/DarwinSSL zlib 1.2.11
+[2019-11-27 09:06:12.980] [info] Upgrade: websocket
+[2019-11-27 09:06:12.982] [info] Publisher authenticated
+[2019-11-27 09:06:12.982] [info] Published msg 3
+[2019-11-27 09:06:12.982] [info] Published message id 3 acked
+```
+
+### Subscriber
+
+```bash
+$ ws cobra_subscribe --appkey FC2F10139A2BAc53BB72D9db967b024f --endpoint ws://127.0.0.1:8008 --rolename _pub --rolesecret 1c04DB8fFe76A4EeFE3E318C72d771db test_channel
+#messages 0 msg/s 0
+[2019-11-27 09:07:39.341] [info] Subscriber connected
+[2019-11-27 09:07:39.341] [info] Connection: Upgrade
+[2019-11-27 09:07:39.341] [info] Sec-WebSocket-Accept: 9vkQWofz49qMCUlTSptCCwHWm+Q=
+[2019-11-27 09:07:39.341] [info] Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
+[2019-11-27 09:07:39.341] [info] Server: ixwebsocket/7.4.0 macos ssl/DarwinSSL zlib 1.2.11
+[2019-11-27 09:07:39.341] [info] Upgrade: websocket
+[2019-11-27 09:07:39.342] [info] Subscriber authenticated
+[2019-11-27 09:07:39.345] [info] Subscriber: subscribed to channel test_channel
+#messages 0 msg/s 0
+#messages 0 msg/s 0
+#messages 0 msg/s 0
+{"baz":123,"foo":"bar"}
+
+#messages 1 msg/s 1
+#messages 1 msg/s 0
+#messages 1 msg/s 0
+{"baz":123,"foo":"bar"}
+
+{"baz":123,"foo":"bar"}
+
+#messages 3 msg/s 2
+#messages 3 msg/s 0
+{"baz":123,"foo":"bar"}
+
+#messages 4 msg/s 1
+^C
+```

docs/design.md

@@ -0,0 +1,83 @@
+## Implementation details
+
+### Per Message Deflate compression.
+
+The per message deflate compression option is supported. It can lead to very nice bandbwith savings (20x !) if your messages are similar, which is often the case for example for chat applications. All features of the spec should be supported.
+
+### TLS/SSL
+
+Connections can be optionally secured and encrypted with TLS/SSL when using a wss:// endpoint, or using normal un-encrypted socket with ws:// endpoints. AppleSSL is used on iOS and macOS, OpenSSL and mbedTLS can be used on Android, Linux and Windows.
+
+If you are using OpenSSL, try to be on a version higher than 1.1.x as there there are thread safety problems with 1.0.x.
+
+### Polling and background thread work
+
+No manual polling to fetch data is required. Data is sent and received instantly by using a background thread for receiving data and the select [system](http://man7.org/linux/man-pages/man2/select.2.html) call to be notified by the OS of incoming data. No timeout is used for select so that the background thread is only woken up when data is available, to optimize battery life. This is also the recommended way of using select according to the select tutorial, section [select law](https://linux.die.net/man/2/select_tut). Read and Writes to the socket are non blocking. Data is sent right away and not enqueued by writing directly to the socket, which is [possible](https://stackoverflow.com/questions/1981372/are-parallel-calls-to-send-recv-on-the-same-socket-valid) since system socket implementations allow concurrent read/writes. However concurrent writes need to be protected with mutex.
+
+### Automatic reconnection
+
+If the remote end (server) breaks the connection, the code will try to perpetually reconnect, by using an exponential backoff strategy, capped at one retry every 10 seconds. This behavior can be disabled.
+
+### Large messages
+
+Large frames are broken up into smaller chunks or messages to avoid filling up the os tcp buffers, which is permitted thanks to WebSocket [fragmentation](https://tools.ietf.org/html/rfc6455#section-5.4). Messages up to 1G were sent and received succesfully.
+
+### Testing
+
+The library has an interactive tool which is handy for testing compatibility ith other libraries. We have tested our client against Python, Erlang, Node.js, and C++ websocket server libraries.
+
+The unittest tries to be comprehensive, and has been running on multiple platforms, with different sanitizers such as a thread sanitizer to catch data races or the undefined behavior sanitizer.
+
+The regression test is running after each commit on github actions for multiple configurations.
+
+* Linux
+* macOS with thread sanitizer
+* macOS, with OpenSSL, with thread sanitizer
+* macOS, with MbedTLS, with thread sanitizer
+* Windows, with MbedTLS (the unittest is not run yet)
+
+## Limitations
+
+* On Windows and Android certificate validation needs to be setup so that SocketTLSOptions.caFile point to a pem file, such as the one distributed by Firefox. Unless that setup is done connecting to a wss endpoint will display an error. On Windows with mbedtls the message will contain `error in handshake : X509 - Certificate verification failed, e.g. CRL, CA or signature check failed`.
+* There is no convenient way to embed a ca cert.
+* Automatic reconnection works at the TCP socket level, and will detect remote end disconnects. However, if the device/computer network become unreachable (by turning off wifi), it is quite hard to reliably and timely detect it at the socket level using `recv` and `send` error codes. [Here](https://stackoverflow.com/questions/14782143/linux-socket-how-to-detect-disconnected-network-in-a-client-program) is a good discussion on the subject. This behavior is consistent with other runtimes such as node.js. One way to detect a disconnected device with low level C code is to do a name resolution with DNS but this can be expensive. Mobile devices have good and reliable API to do that.
+* The server code is using select to detect incoming data, and creates one OS thread per connection. This is not as scalable as strategies using epoll or kqueue.
+
+## C++ code organization
+
+Here is a simplistic diagram which explains how the code is structured in term of class/modules.
+
+```
++-----------------------+ --- Public
+|                       | Start the receiving Background thread. Auto reconnection. Simple websocket Ping.
+|  IXWebSocket          | Interface used by C++ test clients. No IX dependencies.
+|                       |
++-----------------------+
+|                       |
+|  IXWebSocketServer    | Run a server and give each connections its own WebSocket object.
+|                       | Each connection is handled in a new OS thread.
+|                       |
++-----------------------+ --- Private
+|                       |
+|  IXWebSocketTransport | Low level websocket code, framing, managing raw socket. Adapted from easywsclient.
+|                       |
++-----------------------+
+|                       |
+|  IXWebSocketHandshake | Establish the connection between client and server.
+|                       |
++-----------------------+
+|                       |
+|  IXWebSocket          | ws://  Unencrypted Socket handler
+|  IXWebSocketAppleSSL  | wss:// TLS encrypted Socket AppleSSL handler. Used on iOS and macOS
+|  IXWebSocketOpenSSL   | wss:// TLS encrypted Socket OpenSSL handler.  Used on Android and Linux
+|                       |                                               Can be used on macOS too.
++-----------------------+
+|                       |
+|  IXSocketConnect      | Connect to the remote host (client).
+|                       |
++-----------------------+
+|                       |
+|  IXDNSLookup          | Does DNS resolution asynchronously so that it can be interrupted.
+|                       |
++-----------------------+
+```

docs/index.md

@@ -0,0 +1,66 @@
+![Build status](https://github.com/machinezone/IXWebSocket/workflows/unittest/badge.svg)
+
+## Introduction
+
+[*WebSocket*](https://en.wikipedia.org/wiki/WebSocket) is a computer communications protocol, providing full-duplex and bi-directionnal communication channels over a single TCP connection. *IXWebSocket* is a C++ library for client and server Websocket communication, and for client and server HTTP communication. *TLS* aka *SSL* is supported. The code is derived from [easywsclient](https://github.com/dhbaird/easywsclient) and from the [Satori C SDK](https://github.com/satori-com/satori-rtm-sdk-c). It has been tested on the following platforms.
+
+* macOS
+* iOS
+* Linux
+* Android
+* Windows
+* FreeBSD
+
+## Example code
+
+```c++
+// Required on Windows
+ix::initNetSystem();
+
+// Our websocket object
+ix::WebSocket webSocket;
+
+std::string url("ws://localhost:8080/");
+webSocket.setUrl(url);
+
+// Setup a callback to be fired when a message or an event (open, close, error) is received
+webSocket.setOnMessageCallback([](const ix::WebSocketMessagePtr& msg)
+    {
+        if (msg->type == ix::WebSocketMessageType::Message)
+        {
+            std::cout << msg->str << std::endl;
+        }
+    }
+);
+
+// Now that our callback is setup, we can start our background thread and receive messages
+webSocket.start();
+
+// Send a message to the server (default to TEXT mode)
+webSocket.send("hello world");
+```
+
+## Why another library?
+
+There are 2 main reasons that explain why IXWebSocket got written. First, we needed a C++ cross-platform client library, which should have few dependencies. What looked like the most solid one, [websocketpp](https://github.com/zaphoyd/websocketpp) did depend on boost and this was not an option for us. Secondly, there were other available libraries with fewer dependencies (C ones), but they required calling an explicit poll routine periodically to know if a client had received data from a server, which was not elegant.
+
+We started by solving those 2 problems, then we added server websocket code, then an HTTP client, and finally a very simple HTTP server. IXWebSocket comes with a command line utility named ws which is quite handy, and is now packaged with alpine linux. You can install it with `apk add ws`.
+
+* Few dependencies (only zlib)
+* Simple to use ; uses std::string and std::function callbacks.
+* Complete support of the websocket protocol, and basic http support.
+* Client and Server
+* TLS support
+
+## Alternative libraries
+
+There are plenty of great websocket libraries out there, which might work for you. Here are a couple of serious ones.
+
+* [websocketpp](https://github.com/zaphoyd/websocketpp) - C++
+* [beast](https://github.com/boostorg/beast) - C++
+* [libwebsockets](https://libwebsockets.org/) - C
+* [µWebSockets](https://github.com/uNetworking/uWebSockets) - C
+
+## Contributing
+
+IXWebSocket is developed on [GitHub](https://github.com/machinezone/IXWebSocket). We'd love to hear about how you use it; opening up an issue on GitHub is ok for that. If things don't work as expected, please create an issue on GitHub, or even better a pull request if you know how to fix your problem.

docs/packages.md

@@ -0,0 +1,94 @@
+Notes on how we can update the different packages for ixwebsocket.
+
+## VCPKG
+
+Visit the [releases](https://github.com/machinezone/IXWebSocket/releases) page on Github. A tag must have been made first.
+
+Download the latest entry. 
+
+```
+$ cd /tmp
+/tmp$ curl -s -O -L https://github.com/machinezone/IXWebSocket/archive/v9.1.9.tar.gz
+/tmp$
+/tmp$ openssl sha512 v9.1.9.tar.gz
+SHA512(v9.1.9.tar.gz)= f1fd731b5f6a9ce6d6d10bee22a5d9d9baaa8ea0564d6c4cd7eb91dcb88a45c49b2c7fdb75f8640a3589c1b30cee33ef5df8dcbb55920d013394d1e33ddd3c8e
+```
+
+Now go punch those values in the vcpkg ixwebsocket port config files. Here is what the diff look like.
+
+```
+vcpkg$ git diff
+diff --git a/ports/ixwebsocket/CONTROL b/ports/ixwebsocket/CONTROL
+index db9c2adc9..4acae5c3f 100644
+--- a/ports/ixwebsocket/CONTROL
++++ b/ports/ixwebsocket/CONTROL
+@@ -1,5 +1,5 @@
+ Source: ixwebsocket
+-Version: 8.0.5
++Version: 9.1.9
+ Build-Depends: zlib
+ Homepage: https://github.com/machinezone/IXWebSocket
+ Description: Lightweight WebSocket Client and Server + HTTP Client and Server
+diff --git a/ports/ixwebsocket/portfile.cmake b/ports/ixwebsocket/portfile.cmake
+index de082aece..68e523a05 100644
+--- a/ports/ixwebsocket/portfile.cmake
++++ b/ports/ixwebsocket/portfile.cmake
+@@ -1,8 +1,8 @@
+ vcpkg_from_github(
+     OUT_SOURCE_PATH SOURCE_PATH
+     REPO machinezone/IXWebSocket
+-    REF v8.0.5
+-    SHA512 9dcc20d9a0629b92c62a68a8bd7c8206f18dbd9e93289b0b687ec13c478ce9ad1f3563b38c399c8277b0d3812cc78ca725786ba1dedbc3445b9bdb9b689e8add
++    REF v9.1.9
++    SHA512 f1fd731b5f6a9ce6d6d10bee22a5d9d9baaa8ea0564d6c4cd7eb91dcb88a45c49b2c7fdb75f8640a3589c1b30cee33ef5df8dcbb55920d013394d1e33ddd3c8e
+ )
+```
+
+You will need a fork of the vcpkg repo to make a pull request.
+
+```
+git fetch upstream
+git co master
+git reset --hard upstream/master
+git push origin master --force
+```
+
+Make the pull request (I use a new branch to do that).
+
+```
+vcpkg$ git co -b feature/ixwebsocket_9.1.9
+M	ports/ixwebsocket/CONTROL
+M	ports/ixwebsocket/portfile.cmake
+Switched to a new branch 'feature/ixwebsocket_9.1.9'
+vcpkg$
+vcpkg$
+vcpkg$ git commit -am 'ixwebsocket: update to 9.1.9'
+[feature/ixwebsocket_9.1.9 8587a4881] ixwebsocket: update to 9.1.9
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+vcpkg$
+vcpkg$ git push
+fatal: The current branch feature/ixwebsocket_9.1.9 has no upstream branch.
+To push the current branch and set the remote as upstream, use
+
+    git push --set-upstream origin feature/ixwebsocket_9.1.9
+
+vcpkg$ git push --set-upstream origin feature/ixwebsocket_9.1.9
+
+Enumerating objects: 11, done.
+Counting objects: 100% (11/11), done.
+Delta compression using up to 8 threads
+Compressing objects: 100% (6/6), done.
+Writing objects: 100% (6/6), 621 bytes | 621.00 KiB/s, done.
+Total 6 (delta 4), reused 0 (delta 0)
+remote: Resolving deltas: 100% (4/4), completed with 4 local objects.
+remote:
+remote: Create a pull request for 'feature/ixwebsocket_9.1.9' on GitHub by visiting:
+remote:      https://github.com/bsergean/vcpkg/pull/new/feature/ixwebsocket_9.1.9
+remote:
+To https://github.com/bsergean/vcpkg.git
+ * [new branch]          feature/ixwebsocket_9.1.9 -> feature/ixwebsocket_9.1.9
+Branch 'feature/ixwebsocket_9.1.9' set up to track remote branch 'feature/ixwebsocket_9.1.9' from 'origin' by rebasing.
+vcpkg$
+```
+
+Just visit this url, https://github.com/bsergean/vcpkg/pull/new/feature/ixwebsocket_9.1.9, printed on the console, to make the pull request.

docs/usage.md

@@ -0,0 +1,469 @@
+# Examples
+
+The [*ws*](https://github.com/machinezone/IXWebSocket/tree/master/ws) folder countains many interactive programs for chat, [file transfers](https://github.com/machinezone/IXWebSocket/blob/master/ws/ws_send.cpp), [curl like](https://github.com/machinezone/IXWebSocket/blob/master/ws/ws_http_client.cpp) http clients, demonstrating client and server usage.
+
+## Windows note
+
+To use the network system on Windows, you need to initialize it once with *WSAStartup()* and clean it up with *WSACleanup()*. We have helpers for that which you can use, see below. This init would typically take place in your main function.
+
+```cpp
+#include <ixwebsocket/IXNetSystem.h>
+
+int main()
+{
+    ix::initNetSystem();
+
+    ...
+
+    ix::uninitNetSystem();
+    return 0;
+}
+```
+
+## WebSocket client API
+
+```cpp
+#include <ixwebsocket/IXWebSocket.h>
+
+...
+
+// Our websocket object
+ix::WebSocket webSocket;
+
+std::string url("ws://localhost:8080/");
+webSocket.setUrl(url);
+
+// Optional heart beat, sent every 45 seconds when there is not any traffic
+// to make sure that load balancers do not kill an idle connection.
+webSocket.setPingInterval(45);
+
+// Per message deflate connection is enabled by default. You can tweak its parameters or disable it
+webSocket.disablePerMessageDeflate();
+
+// Setup a callback to be fired when a message or an event (open, close, error) is received
+webSocket.setOnMessageCallback([](const ix::WebSocketMessagePtr& msg)
+    {
+        if (msg->type == ix::WebSocketMessageType::Message)
+        {
+            std::cout << msg->str << std::endl;
+        }
+    }
+);
+
+// Now that our callback is setup, we can start our background thread and receive messages
+webSocket.start();
+
+// Send a message to the server (default to TEXT mode)
+webSocket.send("hello world");
+
+// The message can be sent in BINARY mode (useful if you send MsgPack data for example)
+webSocket.sendBinary("some serialized binary data");
+
+// ... finally ...
+
+// Stop the connection
+webSocket.stop()
+```
+
+### Sending messages
+
+`websocket.send("foo")` will send a message.
+
+If the connection was closed and sending failed, the return value will be set to false.
+
+### ReadyState
+
+`getReadyState()` returns the state of the connection. There are 4 possible states.
+
+1. ReadyState::Connecting - The connection is not yet open.
+2. ReadyState::Open       - The connection is open and ready to communicate.
+3. ReadyState::Closing    - The connection is in the process of closing.
+4. ReadyState::Closed     - The connection is closed or could not be opened.
+
+### Open and Close notifications
+
+The onMessage event will be fired when the connection is opened or closed. This is similar to the [JavaScript browser API](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket), which has `open` and `close` events notification that can be registered with the browser `addEventListener`.
+
+```cpp
+webSocket.setOnMessageCallback([](const ix::WebSocketMessagePtr& msg)
+    {
+        if (msg->type == ix::WebSocketMessageType::Open)
+        {
+            std::cout << "send greetings" << std::endl;
+
+            // Headers can be inspected (pairs of string/string)
+            std::cout << "Handshake Headers:" << std::endl;
+            for (auto it : msg->headers)
+            {
+                std::cout << it.first << ": " << it.second << std::endl;
+            }
+        }
+        else if (msg->type == ix::WebSocketMessageType::Close)
+        {
+            std::cout << "disconnected" << std::endl;
+
+            // The server can send an explicit code and reason for closing.
+            // This data can be accessed through the closeInfo object.
+            std::cout << msg->closeInfo.code << std::endl;
+            std::cout << msg->closeInfo.reason << std::endl;
+        }
+    }
+);
+```
+
+### Error notification
+
+A message will be fired when there is an error with the connection. The message type will be `ix::WebSocketMessageType::Error`. Multiple fields will be available on the event to describe the error.
+
+```cpp
+webSocket.setOnMessageCallback([](const ix::WebSocketMessagePtr& msg)
+    {
+        if (msg->type == ix::WebSocketMessageType::Error)
+        {
+            std::stringstream ss;
+            ss << "Error: "         << msg->errorInfo.reason      << std::endl;
+            ss << "#retries: "      << msg->eventInfo.retries     << std::endl;
+            ss << "Wait time(ms): " << msg->eventInfo.wait_time   << std::endl;
+            ss << "HTTP Status: "   << msg->eventInfo.http_status << std::endl;
+            std::cout << ss.str() << std::endl;
+        }
+    }
+);
+```
+
+### start, stop
+
+1. `websocket.start()` connect to the remote server and starts the message receiving background thread.
+2. `websocket.stop()` disconnect from the remote server and closes the background thread.
+
+### Configuring the remote url
+
+The url can be set and queried after a websocket object has been created. You will have to call `stop` and `start` if you want to disconnect and connect to that new url.
+
+```cpp
+std::string url("wss://example.com");
+websocket.configure(url);
+```
+
+### Ping/Pong support
+
+Ping/pong messages are used to implement keep-alive. 2 message types exists to identify ping and pong messages. Note that when a ping message is received, a pong is instantly send back as requested by the WebSocket spec.
+
+```cpp
+webSocket.setOnMessageCallback([](const ix::WebSocketMessagePtr& msg)
+    {
+        if (msg->type == ix::WebSocketMessageType::Ping ||
+            msg->type == ix::WebSocketMessageType::Pong)
+        {
+            std::cout << "pong data: " << msg->str << std::endl;
+        }
+    }
+);
+```
+
+A ping message can be sent to the server, with an optional data string.
+
+```cpp
+websocket.ping("ping data, optional (empty string is ok): limited to 125 bytes long");
+```
+
+### Heartbeat.
+
+You can configure an optional heart beat / keep-alive, sent every 45 seconds
+when there is no any traffic to make sure that load balancers do not kill an
+idle connection.
+
+```cpp
+webSocket.setPingInterval(45);
+```
+
+### Supply extra HTTP headers.
+
+You can set extra HTTP headers to be sent during the WebSocket handshake.
+
+```cpp
+WebSocketHttpHeaders headers;
+headers["foo"] = "bar";
+webSocket.setExtraHeaders(headers);
+```
+
+### Subprotocols
+
+You can specify subprotocols to be set during the WebSocket handshake. For more info you can refer to [this doc](https://hpbn.co/websocket/#subprotocol-negotiation).
+
+```cpp
+webSocket.addSubprotocol("appProtocol-v1");
+webSocket.addSubprotocol("appProtocol-v2");
+```
+
+The protocol that the server did accept is available in the open info `protocol` field.
+
+```cpp
+std::cout << "protocol: " << msg->openInfo.protocol << std::endl;
+```
+
+### Automatic reconnection
+
+Automatic reconnection kicks in when the connection is disconnected without the user consent. This feature is on by default and can be turned off.
+
+```cpp
+webSocket.enableAutomaticReconnection();  // turn on
+webSocket.disableAutomaticReconnection(); // turn off
+bool enabled = webSocket.isAutomaticReconnectionEnabled(); // query state
+```
+
+The technique to calculate wait time is called [exponential
+backoff](https://docs.aws.amazon.com/general/latest/gr/api-retries.html). Here
+are the default waiting times between attempts (from connecting with `ws connect ws://foo.com`)
+
+```
+> Connection error: Got bad status connecting to foo.com, status: 301, HTTP Status line: HTTP/1.1 301 Moved Permanently
+
+#retries: 1
+Wait time(ms): 100
+#retries: 2
+Wait time(ms): 200
+#retries: 3
+Wait time(ms): 400
+#retries: 4
+Wait time(ms): 800
+#retries: 5
+Wait time(ms): 1600
+#retries: 6
+Wait time(ms): 3200
+#retries: 7
+Wait time(ms): 6400
+#retries: 8
+Wait time(ms): 10000
+```
+
+The waiting time is capped by default at 10s between 2 attempts, but that value can be changed and queried.
+
+```cpp
+webSocket.setMaxWaitBetweenReconnectionRetries(5 * 1000); // 5000ms = 5s
+uint32_t m = webSocket.getMaxWaitBetweenReconnectionRetries();
+```
+
+## WebSocket server API
+
+```cpp
+#include <ixwebsocket/IXWebSocketServer.h>
+
+...
+
+// Run a server on localhost at a given port.
+// Bound host name, max connections and listen backlog can also be passed in as parameters.
+ix::WebSocketServer server(port);
+
+server.setOnConnectionCallback(
+    [&server](std::shared_ptr<WebSocket> webSocket,
+              std::shared_ptr<ConnectionState> connectionState)
+    {
+        webSocket->setOnMessageCallback(
+            [webSocket, connectionState, &server](const ix::WebSocketMessagePtr msg)
+            {
+                if (msg->type == ix::WebSocketMessageType::Open)
+                {
+                    std::cerr << "New connection" << std::endl;
+
+                    // A connection state object is available, and has a default id
+                    // You can subclass ConnectionState and pass an alternate factory
+                    // to override it. It is useful if you want to store custom
+                    // attributes per connection (authenticated bool flag, attributes, etc...)
+                    std::cerr << "id: " << connectionState->getId() << std::endl;
+
+                    // The uri the client did connect to.
+                    std::cerr << "Uri: " << msg->openInfo.uri << std::endl;
+
+                    std::cerr << "Headers:" << std::endl;
+                    for (auto it : msg->openInfo.headers)
+                    {
+                        std::cerr << it.first << ": " << it.second << std::endl;
+                    }
+                }
+                else if (msg->type == ix::WebSocketMessageType::Message)
+                {
+                    // For an echo server, we just send back to the client whatever was received by the server
+                    // All connected clients are available in an std::set. See the broadcast cpp example.
+                    // Second parameter tells whether we are sending the message in binary or text mode.
+                    // Here we send it in the same mode as it was received.
+                    webSocket->send(msg->str, msg->binary);
+                }
+            }
+        );
+    }
+);
+
+auto res = server.listen();
+if (!res.first)
+{
+    // Error handling
+    return 1;
+}
+
+// Run the server in the background. Server can be stoped by calling server.stop()
+server.start();
+
+// Block until server.stop() is called.
+server.wait();
+
+```
+
+## HTTP client API
+
+```cpp
+#include <ixwebsocket/IXHttpClient.h>
+
+...
+
+//
+// Preparation
+//
+HttpClient httpClient;
+HttpRequestArgsPtr args = httpClient.createRequest();
+
+// Custom headers can be set
+WebSocketHttpHeaders headers;
+headers["Foo"] = "bar";
+args->extraHeaders = headers;
+
+// Timeout options
+args->connectTimeout = connectTimeout;
+args->transferTimeout = transferTimeout;
+
+// Redirect options
+args->followRedirects = followRedirects;
+args->maxRedirects = maxRedirects;
+
+// Misc
+args->compress = compress; // Enable gzip compression
+args->verbose = verbose;
+args->logger = [](const std::string& msg)
+{
+    std::cout << msg;
+};
+
+//
+// Synchronous Request
+//
+HttpResponsePtr out;
+std::string url = "https://www.google.com";
+
+// HEAD request
+out = httpClient.head(url, args);
+
+// GET request
+out = httpClient.get(url, args);
+
+// POST request with parameters
+HttpParameters httpParameters;
+httpParameters["foo"] = "bar";
+out = httpClient.post(url, httpParameters, args);
+
+// POST request with a body
+out = httpClient.post(url, std::string("foo=bar"), args);
+
+//
+// Result
+//
+auto statusCode = response->statusCode; // Can be HttpErrorCode::Ok, HttpErrorCode::UrlMalformed, etc...
+auto errorCode = response->errorCode; // 200, 404, etc...
+auto responseHeaders = response->headers; // All the headers in a special case-insensitive unordered_map of (string, string)
+auto payload = response->payload; // All the bytes from the response as an std::string
+auto errorMsg = response->errorMsg; // Descriptive error message in case of failure
+auto uploadSize = response->uploadSize; // Byte count of uploaded data
+auto downloadSize = response->downloadSize; // Byte count of downloaded data
+
+//
+// Asynchronous Request
+//
+bool async = true;
+HttpClient httpClient(async);
+auto args = httpClient.createRequest(url, HttpClient::kGet);
+
+// Push the request to a queue,
+bool ok = httpClient.performRequest(args, [](const HttpResponsePtr& response)
+    {
+        // This callback execute in a background thread. Make sure you uses appropriate protection such as mutex
+        auto statusCode = response->statusCode; // acess results
+    }
+);
+
+// ok will be false if your httpClient is not async
+```
+
+## HTTP server API
+
+```cpp
+#include <ixwebsocket/IXHttpServer.h>
+
+ix::HttpServer server(port, hostname);
+
+auto res = server.listen();
+if (!res.first)
+{
+    std::cerr << res.second << std::endl;
+    return 1;
+}
+
+server.start();
+server.wait();
+```
+
+If you want to handle how requests are processed, implement the setOnConnectionCallback callback, which takes an HttpRequestPtr as input, and returns an HttpResponsePtr. You can look at HttpServer::setDefaultConnectionCallback for a slightly more advanced callback example.
+
+```cpp
+setOnConnectionCallback(
+    [this](HttpRequestPtr request,
+           std::shared_ptr<ConnectionState> /*connectionState*/) -> HttpResponsePtr
+    {
+        // Build a string for the response
+        std::stringstream ss;
+        ss << request->method
+           << " "
+           << request->uri;
+
+        std::string content = ss.str();
+
+        return std::make_shared<HttpResponse>(200, "OK",
+                                              HttpErrorCode::Ok,
+                                              WebSocketHttpHeaders(),
+                                              content);
+}
+```
+
+## TLS support and configuration
+
+To leverage TLS features, the library must be compiled with the option `USE_TLS=1`.
+
+If you are using OpenSSL, try to be on a version higher than 1.1.x as there there are thread safety problems with 1.0.x.
+
+Then, secure sockets are automatically used when connecting to a `wss://*` url.
+
+Additional TLS options can be configured by passing a `ix::SocketTLSOptions` instance to the
+`setTLSOptions` on `ix::WebSocket` (or `ix::WebSocketServer` or `ix::HttpServer`)
+
+```cpp
+webSocket.setTLSOptions({
+    .certFile = "path/to/cert/file.pem",
+    .keyFile = "path/to/key/file.pem",
+    .caFile = "path/to/trust/bundle/file.pem",
+    .tls = true // required in server mode
+});
+```
+
+Specifying `certFile` and `keyFile` configures the certificate that will be used to communicate with TLS peers.
+
+On a client, this is only necessary for connecting to servers that require a client certificate.
+
+On a server, this is necessary for TLS support.
+
+Specifying `caFile` configures the trusted roots bundle file (in PEM format) that will be used to verify peer certificates.
+ - The special value of `SYSTEM` (the default) indicates that the system-configured trust bundle should be used; this is generally what you want when connecting to any publicly exposed API/server.
+ - The special value of `NONE` can be used to disable peer verification; this is only recommended to rule out certificate verification when testing connectivity.
+
+For a client, specifying `caFile` can be used if connecting to a server that uses a self-signed cert, or when using a custom CA in an internal environment.
+
+For a server, specifying `caFile` implies that:
+1. You require clients to present a certificate
+1. It must be signed by one of the trusted roots in the file

docs/ws.md

@@ -0,0 +1,369 @@
+## General
+
+ws is a command line tool that should exercise most of the IXWebSocket code, and provide example code.
+
+```
+ws is a websocket tool
+Usage: ws [OPTIONS] SUBCOMMAND
+
+Options:
+  -h,--help                   Print this help message and exit
+
+Subcommands:
+  send                        Send a file
+  receive                     Receive a file
+  transfer                    Broadcasting server
+  connect                     Connect to a remote server
+  chat                        Group chat
+  echo_server                 Echo server
+  broadcast_server            Broadcasting server
+  ping                        Ping pong
+  curl                        HTTP Client
+  redis_publish               Redis publisher
+  redis_subscribe             Redis subscriber
+  cobra_subscribe             Cobra subscriber
+  cobra_publish               Cobra publisher
+  cobra_to_statsd             Cobra to statsd
+  cobra_to_sentry             Cobra to sentry
+  snake                       Snake server
+  httpd                       HTTP server
+```
+
+## curl
+
+The curl subcommand try to be compatible with the curl syntax, to fetch http pages.
+
+Making a HEAD request with the -I parameter.
+
+```
+$ ws curl -I https://www.google.com/
+
+Accept-Ranges: none
+Alt-Svc: quic=":443"; ma=2592000; v="46,43",h3-Q048=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000
+Cache-Control: private, max-age=0
+Content-Type: text/html; charset=ISO-8859-1
+Date: Tue, 08 Oct 2019 21:36:57 GMT
+Expires: -1
+P3P: CP="This is not a P3P policy! See g.co/p3phelp for more info."
+Server: gws
+Set-Cookie: NID=188=ASwfz8GrXQrHCLqAz-AndLOMLcz0rC9yecnf3h0yXZxRL3rTufTU_GDDwERp7qQL7LZ_EB8gCRyPXGERyOSAgaqgnrkoTmvWrwFemRLMaOZ896GrHobi5fV7VLklnSG2w48Gj8xMlwxfP7Z-bX-xR9UZxep1tHM6UmFQdD_GkBE; expires=Wed, 08-Apr-2020 21:36:57 GMT; path=/; domain=.google.com; HttpOnly
+Transfer-Encoding: chunked
+Vary: Accept-Encoding
+X-Frame-Options: SAMEORIGIN
+X-XSS-Protection: 0
+Upload size: 143
+Download size: 0
+Status: 200
+```
+
+Making a POST request with the -F parameter.
+
+```
+$ ws curl -F foo=bar https://httpbin.org/post
+foo: bar
+Downloaded 438 bytes out of 438
+Access-Control-Allow-Credentials: true
+Access-Control-Allow-Origin: *
+Connection: keep-alive
+Content-Encoding:
+Content-Length: 438
+Content-Type: application/json
+Date: Tue, 08 Oct 2019 21:47:54 GMT
+Referrer-Policy: no-referrer-when-downgrade
+Server: nginx
+X-Content-Type-Options: nosniff
+X-Frame-Options: DENY
+X-XSS-Protection: 1; mode=block
+Upload size: 219
+Download size: 438
+Status: 200
+payload: {
+  "args": {},
+  "data": "",
+  "files": {},
+  "form": {
+    "foo": "bar"
+  },
+  "headers": {
+    "Accept": "*/*",
+    "Content-Length": "7",
+    "Content-Type": "application/x-www-form-urlencoded",
+    "Host": "httpbin.org",
+    "User-Agent": "ixwebsocket/7.0.0 macos ssl/OpenSSL OpenSSL 1.0.2q  20 Nov 2018 zlib 1.2.11"
+  },
+  "json": null,
+  "origin": "155.94.127.118, 155.94.127.118",
+  "url": "https://httpbin.org/post"
+}
+```
+
+Passing in a custom header with -H.
+
+```
+$ ws curl -F foo=bar -H 'my_custom_header: baz' https://httpbin.org/post
+my_custom_header:  baz
+foo: bar
+Downloaded 470 bytes out of 470
+Access-Control-Allow-Credentials: true
+Access-Control-Allow-Origin: *
+Connection: keep-alive
+Content-Encoding:
+Content-Length: 470
+Content-Type: application/json
+Date: Tue, 08 Oct 2019 21:50:25 GMT
+Referrer-Policy: no-referrer-when-downgrade
+Server: nginx
+X-Content-Type-Options: nosniff
+X-Frame-Options: DENY
+X-XSS-Protection: 1; mode=block
+Upload size: 243
+Download size: 470
+Status: 200
+payload: {
+  "args": {},
+  "data": "",
+  "files": {},
+  "form": {
+    "foo": "bar"
+  },
+  "headers": {
+    "Accept": "*/*",
+    "Content-Length": "7",
+    "Content-Type": "application/x-www-form-urlencoded",
+    "Host": "httpbin.org",
+    "My-Custom-Header": "baz",
+    "User-Agent": "ixwebsocket/7.0.0 macos ssl/OpenSSL OpenSSL 1.0.2q  20 Nov 2018 zlib 1.2.11"
+  },
+  "json": null,
+  "origin": "155.94.127.118, 155.94.127.118",
+  "url": "https://httpbin.org/post"
+}
+```
+
+## connect
+
+The connect command connects to a websocket endpoint, and starts an interactive prompt. Line editing, such as using the direction keys to fetch the last thing you tried to type) is provided. That command is pretty useful to try to send random data to an endpoint and verify that the service handles it with grace (such as sending invalid json).
+
+```
+ws connect wss://echo.websocket.org
+Type Ctrl-D to exit prompt...
+Connecting to url: wss://echo.websocket.org
+> ws_connect: connected
+Uri: /
+Handshake Headers:
+Connection: Upgrade
+Date: Tue, 08 Oct 2019 21:38:44 GMT
+Sec-WebSocket-Accept: 2j6LBScZveqrMx1W/GJkCWvZo3M=
+sec-websocket-extensions:
+Server: Kaazing Gateway
+Upgrade: websocket
+Received ping
+Received ping
+Received ping
+Hello world !
+> Received 13 bytes
+ws_connect: received message: Hello world !
+> Hello world !
+> Received 13 bytes
+ws_connect: received message: Hello world !
+```
+
+```
+ws connect 'ws://jeanserge.com/v2?appkey=_pubsub'
+Type Ctrl-D to exit prompt...
+Connecting to url: ws://jeanserge.com/v2?appkey=_pubsub
+> ws_connect: connected
+Uri: /v2?appkey=_pubsub
+Handshake Headers:
+Connection: Upgrade
+Date: Tue, 08 Oct 2019 21:45:28 GMT
+Sec-WebSocket-Accept: LYHmjh9Gsu/Yw7aumQqyPObOEV4=
+Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
+Server: Python/3.7 websockets/8.0.2
+Upgrade: websocket
+bababababababab
+> ws_connect: connection closed: code 1000 reason
+
+ws_connect: connected
+Uri: /v2?appkey=_pubsub
+Handshake Headers:
+Connection: Upgrade
+Date: Tue, 08 Oct 2019 21:45:44 GMT
+Sec-WebSocket-Accept: I1rqxdLgTU+opPi5/zKPBTuXdLw=
+Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
+Server: Python/3.7 websockets/8.0.2
+Upgrade: websocket
+```
+
+## Websocket proxy
+
+```
+ws proxy_server --remote_host ws://127.0.0.1:9000 -v
+Listening on 127.0.0.1:8008
+```
+
+If you connect to ws://127.0.0.1:8008, the proxy will connect to ws://127.0.0.1:9000 and pass all traffic to this server.
+
+## File transfer
+
+```
+# Start transfer server, which is just a broadcast server at this point
+ws transfer # running on port 8080.
+
+# Start receiver first
+ws receive ws://localhost:8080
+
+# Then send a file. File will be received and written to disk by the receiver process
+ws send ws://localhost:8080 /file/to/path
+```
+
+## HTTP Client
+
+```
+$ ws curl --help
+HTTP Client
+Usage: ws curl [OPTIONS] url
+
+Positionals:
+  url TEXT REQUIRED           Connection url
+
+Options:
+  -h,--help                   Print this help message and exit
+  -d TEXT                     Form data
+  -F TEXT                     Form data
+  -H TEXT                     Header
+  --output TEXT               Output file
+  -I                          Send a HEAD request
+  -L                          Follow redirects
+  --max-redirects INT         Max Redirects
+  -v                          Verbose
+  -O                          Save output to disk
+  --compress                  Enable gzip compression
+  --connect-timeout INT       Connection timeout
+  --transfer-timeout INT      Transfer timeout
+```
+
+## Cobra client and server
+
+[cobra](https://github.com/machinezone/cobra) is a real time messenging server. ws has several sub-command to interact with cobra. There is also a minimal cobra compatible server named snake available.
+
+Below are examples on running a snake server and clients with TLS enabled (the server only works with the OpenSSL and the Mbed TLS backend for now).
+
+First, generate certificates.
+
+```
+$ cd /path/to/IXWebSocket
+$ cd ixsnake/ixsnake
+$ bash ../../ws/generate_certs.sh
+Generating RSA private key, 2048 bit long modulus
+.....+++
+.................+++
+e is 65537 (0x10001)
+generated ./.certs/trusted-ca-key.pem
+generated ./.certs/trusted-ca-crt.pem
+Generating RSA private key, 2048 bit long modulus
+..+++
+.......................................+++
+e is 65537 (0x10001)
+generated ./.certs/trusted-server-key.pem
+Signature ok
+subject=/O=machinezone/O=IXWebSocket/CN=trusted-server
+Getting CA Private Key
+generated ./.certs/trusted-server-crt.pem
+Generating RSA private key, 2048 bit long modulus
+...................................+++
+..................................................+++
+e is 65537 (0x10001)
+generated ./.certs/trusted-client-key.pem
+Signature ok
+subject=/O=machinezone/O=IXWebSocket/CN=trusted-client
+Getting CA Private Key
+generated ./.certs/trusted-client-crt.pem
+Generating RSA private key, 2048 bit long modulus
+..............+++
+.......................................+++
+e is 65537 (0x10001)
+generated ./.certs/untrusted-ca-key.pem
+generated ./.certs/untrusted-ca-crt.pem
+Generating RSA private key, 2048 bit long modulus
+..........+++
+................................................+++
+e is 65537 (0x10001)
+generated ./.certs/untrusted-client-key.pem
+Signature ok
+subject=/O=machinezone/O=IXWebSocket/CN=untrusted-client
+Getting CA Private Key
+generated ./.certs/untrusted-client-crt.pem
+Generating RSA private key, 2048 bit long modulus
+.....................................................................................+++
+...........+++
+e is 65537 (0x10001)
+generated ./.certs/selfsigned-client-key.pem
+Signature ok
+subject=/O=machinezone/O=IXWebSocket/CN=selfsigned-client
+Getting Private key
+generated ./.certs/selfsigned-client-crt.pem
+```
+
+Now run the snake server.
+
+```
+$ export certs=.certs
+$ ws snake --tls --port 8765 --cert-file ${certs}/trusted-server-crt.pem --key-file ${certs}/trusted-server-key.pem --ca-file ${certs}/trusted-ca-crt.pem
+{
+  "apps": {
+    "FC2F10139A2BAc53BB72D9db967b024f": {
+      "roles": {
+        "_sub": {
+          "secret": "66B1dA3ED5fA074EB5AE84Dd8CE3b5ba"
+        },
+        "_pub": {
+          "secret": "1c04DB8fFe76A4EeFE3E318C72d771db"
+        }
+      }
+    }
+  }
+}
+
+redis host: 127.0.0.1
+redis password:
+redis port: 6379
+```
+
+As a new connection comes in, such output should be printed
+
+```
+[2019-12-19 20:27:19.724] [info] New connection
+id: 0
+Uri: /v2?appkey=_health
+Headers:
+Connection: Upgrade
+Host: 127.0.0.1:8765
+Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
+Sec-WebSocket-Key: d747B0fE61Db73f7Eh47c0==
+Sec-WebSocket-Protocol: json
+Sec-WebSocket-Version: 13
+Upgrade: websocket
+User-Agent: ixwebsocket/7.5.8 macos ssl/OpenSSL OpenSSL 1.0.2q  20 Nov 2018 zlib 1.2.11
+```
+
+To connect and publish a message, do:
+
+```
+$ export certs=.certs
+$ cd /path/to/ws/folder
+$ ls cobraMetricsSample.json
+cobraMetricsSample.json
+$ ws cobra_publish --endpoint wss://127.0.0.1:8765 --appkey FC2F10139A2BAc53BB72D9db967b024f --rolename _pub --rolesecret 1c04DB8fFe76A4EeFE3E318C72d771db --channel foo --cert-file ${certs}/trusted-client-crt.pem --key-file ${certs}/trusted-client-key.pem --ca-file ${certs}/trusted-ca-crt.pem cobraMetricsSample.json
+[2019-12-19 20:46:42.656] [info] Publisher connected
+[2019-12-19 20:46:42.657] [info] Connection: Upgrade
+[2019-12-19 20:46:42.657] [info] Sec-WebSocket-Accept: rs99IFThoBrhSg+k8G4ixH9yaq4=
+[2019-12-19 20:46:42.657] [info] Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
+[2019-12-19 20:46:42.657] [info] Server: ixwebsocket/7.5.8 macos ssl/OpenSSL OpenSSL 1.0.2q  20 Nov 2018 zlib 1.2.11
+[2019-12-19 20:46:42.657] [info] Upgrade: websocket
+[2019-12-19 20:46:42.658] [info] Publisher authenticated
+[2019-12-19 20:46:42.658] [info] Published msg 3
+[2019-12-19 20:46:42.659] [info] Published message id 3 acked
+```
+
+To use OpenSSL on macOS, compile with `make ws_openssl`. First you will have to install OpenSSL libraries, which can be done with Homebrew. Use `make ws_mbedtls` accordingly to use MbedTLS.

ixbots/CMakeLists.txt

@@ -0,0 +1,45 @@
+#
+# Author: Benjamin Sergeant
+# Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+#
+
+set (IXBOTS_SOURCES
+    ixbots/IXCobraToSentryBot.cpp
+    ixbots/IXCobraToStatsdBot.cpp
+    ixbots/IXQueueManager.cpp
+    ixbots/IXStatsdClient.cpp
+)
+
+set (IXBOTS_HEADERS
+    ixbots/IXCobraToSentryBot.h
+    ixbots/IXCobraToStatsdBot.h
+    ixbots/IXQueueManager.h
+    ixbots/IXStatsdClient.h
+)
+
+add_library(ixbots STATIC
+    ${IXBOTS_SOURCES}
+    ${IXBOTS_HEADERS}
+)
+
+find_package(JsonCpp)
+if (NOT JSONCPP_FOUND)
+  set(JSONCPP_INCLUDE_DIRS ../third_party/jsoncpp)
+endif()
+
+find_package(SpdLog)
+if (NOT SPDLOG_FOUND)
+  set(SPDLOG_INCLUDE_DIRS ../third_party/spdlog/include)
+endif()
+
+set(IXBOTS_INCLUDE_DIRS
+    .
+    ..
+    ../ixcore
+    ../ixwebsocket
+    ../ixcobra
+    ../ixsentry
+    ${JSONCPP_INCLUDE_DIRS}
+    ${SPDLOG_INCLUDE_DIRS})
+
+target_include_directories( ixbots PUBLIC ${IXBOTS_INCLUDE_DIRS} )

ixbots/ixbots/IXCobraToSentryBot.cpp

@@ -0,0 +1,305 @@
+/*
+ *  IXCobraToSentryBot.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXCobraToSentryBot.h"
+#include "IXQueueManager.h"
+
+#include <chrono>
+#include <ixcobra/IXCobraConnection.h>
+#include <spdlog/spdlog.h>
+#include <sstream>
+#include <thread>
+#include <vector>
+
+namespace ix
+{
+    int cobra_to_sentry_bot(const CobraConfig& config,
+                            const std::string& channel,
+                            const std::string& filter,
+                            const std::string& position,
+                            SentryClient& sentryClient,
+                            bool verbose,
+                            bool strict,
+                            size_t maxQueueSize,
+                            bool enableHeartbeat,
+                            int runtime)
+    {
+        ix::CobraConnection conn;
+        conn.configure(config);
+        conn.connect();
+
+        Json::FastWriter jsonWriter;
+        std::atomic<uint64_t> sentCount(0);
+        std::atomic<uint64_t> receivedCount(0);
+        std::atomic<bool> errorSending(false);
+        std::atomic<bool> stop(false);
+        std::atomic<bool> throttled(false);
+        std::atomic<bool> fatalCobraError(false);
+
+        QueueManager queueManager(maxQueueSize);
+
+        auto timer = [&sentCount, &receivedCount, &stop] {
+            while (!stop)
+            {
+                spdlog::info("messages received {} sent {}", receivedCount, sentCount);
+
+                auto duration = std::chrono::seconds(1);
+                std::this_thread::sleep_for(duration);
+            }
+
+            spdlog::info("timer thread done");
+        };
+
+        std::thread t1(timer);
+
+        auto heartbeat = [&sentCount, &receivedCount, &stop, &enableHeartbeat] {
+            std::string state("na");
+
+            if (!enableHeartbeat) return;
+
+            while (!stop)
+            {
+                std::stringstream ss;
+                ss << "messages received " << receivedCount;
+                ss << "messages sent " << sentCount;
+
+                std::string currentState = ss.str();
+
+                if (currentState == state)
+                {
+                    spdlog::error("no messages received or sent for 1 minute, exiting");
+                    exit(1);
+                }
+                state = currentState;
+
+                auto duration = std::chrono::minutes(1);
+                std::this_thread::sleep_for(duration);
+            }
+
+            spdlog::info("heartbeat thread done");
+        };
+
+        std::thread t2(heartbeat);
+
+        auto sentrySender =
+            [&queueManager, verbose, &errorSending, &sentCount, &stop, &throttled, &sentryClient] {
+
+                while (true)
+                {
+                    Json::Value msg = queueManager.pop();
+
+                    if (stop) break;
+                    if (msg.isNull()) continue;
+
+                    auto ret = sentryClient.send(msg, verbose);
+                    HttpResponsePtr response = ret.first;
+
+                    if (!response)
+                    {
+                        spdlog::warn("Null HTTP Response");
+                        continue;
+                    }
+
+                    if (verbose)
+                    {
+                        for (auto it : response->headers)
+                        {
+                            spdlog::info("{}: {}", it.first, it.second);
+                        }
+
+                        spdlog::info("Upload size: {}", response->uploadSize);
+                        spdlog::info("Download size: {}", response->downloadSize);
+
+                        spdlog::info("Status: {}", response->statusCode);
+                        if (response->errorCode != HttpErrorCode::Ok)
+                        {
+                            spdlog::info("error message: {}", response->errorMsg);
+                        }
+
+                        if (response->headers["Content-Type"] != "application/octet-stream")
+                        {
+                            spdlog::info("payload: {}", response->payload);
+                        }
+                    }
+
+                    if (response->statusCode != 200)
+                    {
+                        spdlog::error("Error sending data to sentry: {}", response->statusCode);
+                        spdlog::error("Body: {}", ret.second);
+                        spdlog::error("Response: {}", response->payload);
+                        errorSending = true;
+
+                        // Error 429 Too Many Requests
+                        if (response->statusCode == 429)
+                        {
+                            auto retryAfter = response->headers["Retry-After"];
+                            std::stringstream ss;
+                            ss << retryAfter;
+                            int seconds;
+                            ss >> seconds;
+
+                            if (!ss.eof() || ss.fail())
+                            {
+                                seconds = 30;
+                                spdlog::warn("Error parsing Retry-After header. "
+                                             "Using {} for the sleep duration",
+                                             seconds);
+                            }
+
+                            spdlog::warn("Error 429 - Too Many Requests. ws will sleep "
+                                         "and retry after {} seconds",
+                                         retryAfter);
+
+                            throttled = true;
+                            auto duration = std::chrono::seconds(seconds);
+                            std::this_thread::sleep_for(duration);
+                            throttled = false;
+                        }
+                    }
+                    else
+                    {
+                        ++sentCount;
+                    }
+
+                    if (stop) break;
+                }
+
+                spdlog::info("sentrySender thread done");
+            };
+
+        std::thread t3(sentrySender);
+
+        conn.setEventCallback([&conn,
+                               &channel,
+                               &filter,
+                               &position,
+                               &jsonWriter,
+                               verbose,
+                               &throttled,
+                               &receivedCount,
+                               &fatalCobraError,
+                               &queueManager](ix::CobraConnectionEventType eventType,
+                                              const std::string& errMsg,
+                                              const ix::WebSocketHttpHeaders& headers,
+                                              const std::string& subscriptionId,
+                                              CobraConnection::MsgId msgId) {
+            if (eventType == ix::CobraConnection_EventType_Open)
+            {
+                spdlog::info("Subscriber connected");
+
+                for (auto it : headers)
+                {
+                    spdlog::info("{}: {}", it.first, it.second);
+                }
+            }
+            if (eventType == ix::CobraConnection_EventType_Closed)
+            {
+                spdlog::info("Subscriber closed");
+            }
+            else if (eventType == ix::CobraConnection_EventType_Authenticated)
+            {
+                spdlog::info("Subscriber authenticated");
+                conn.subscribe(channel,
+                               filter,
+                               position,
+                               [&jsonWriter, verbose, &throttled, &receivedCount, &queueManager](
+                                   const Json::Value& msg, const std::string& position) {
+                                   if (verbose)
+                                   {
+                                       spdlog::info("Subscriber received message {} -> {}", position, jsonWriter.write(msg));
+                                   }
+
+                                   // If we cannot send to sentry fast enough, drop the message
+                                   if (throttled)
+                                   {
+                                       return;
+                                   }
+
+                                   ++receivedCount;
+                                   queueManager.add(msg);
+                               });
+            }
+            else if (eventType == ix::CobraConnection_EventType_Subscribed)
+            {
+                spdlog::info("Subscriber: subscribed to channel {}", subscriptionId);
+            }
+            else if (eventType == ix::CobraConnection_EventType_UnSubscribed)
+            {
+                spdlog::info("Subscriber: unsubscribed from channel {}", subscriptionId);
+            }
+            else if (eventType == ix::CobraConnection_EventType_Error)
+            {
+                spdlog::error("Subscriber: error {}", errMsg);
+            }
+            else if (eventType == ix::CobraConnection_EventType_Published)
+            {
+                spdlog::error("Published message hacked: {}", msgId);
+            }
+            else if (eventType == ix::CobraConnection_EventType_Pong)
+            {
+                spdlog::info("Received websocket pong");
+            }
+            else if (eventType == ix::CobraConnection_EventType_Handshake_Error)
+            {
+                spdlog::error("Subscriber: Handshake error: {}", errMsg);
+                fatalCobraError = true;
+            }
+            else if (eventType == ix::CobraConnection_EventType_Authentication_Error)
+            {
+                spdlog::error("Subscriber: Authentication error: {}", errMsg);
+                fatalCobraError = true;
+            }
+            else if (eventType == ix::CobraConnection_EventType_Subscription_Error)
+            {
+                spdlog::error("Subscriber: Subscription error: {}", errMsg);
+                fatalCobraError = true;
+            }
+        });
+
+        // Run forever
+        if (runtime == -1)
+        {
+            while (true)
+            {
+                auto duration = std::chrono::seconds(1);
+                std::this_thread::sleep_for(duration);
+
+                if (strict && errorSending) break;
+                if (fatalCobraError) break;
+            }
+        }
+        // Run for a duration, used by unittesting now
+        else
+        {
+            for (int i = 0 ; i < runtime; ++i)
+            {
+                auto duration = std::chrono::seconds(1);
+                std::this_thread::sleep_for(duration);
+
+                if (strict && errorSending) break;
+                if (fatalCobraError) break;
+            }
+        }
+
+        //
+        // Cleanup.
+        // join all the bg threads and stop them.
+        //
+        conn.disconnect();
+        stop = true;
+
+        // progress thread
+        t1.join();
+
+        // heartbeat thread
+        if (t2.joinable()) t2.join();
+
+        // sentry sender thread
+        t3.join();
+
+        return ((strict && errorSending) || fatalCobraError) ? -1 : (int) sentCount;
+    }
+} // namespace ix

ixbots/ixbots/IXCobraToSentryBot.h

@@ -0,0 +1,24 @@
+/*
+ *  IXCobraToSentryBot.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019-2020 Machine Zone, Inc. All rights reserved.
+ */
+#pragma once
+
+#include <ixcobra/IXCobraConfig.h>
+#include <ixsentry/IXSentryClient.h>
+#include <string>
+
+namespace ix
+{
+    int cobra_to_sentry_bot(const CobraConfig& config,
+                            const std::string& channel,
+                            const std::string& filter,
+                            const std::string& position,
+                            SentryClient& sentryClient,
+                            bool verbose,
+                            bool strict,
+                            size_t maxQueueSize,
+                            bool enableHeartbeat,
+                            int runtime);
+} // namespace ix

ixbots/ixbots/IXCobraToStatsdBot.cpp

@@ -0,0 +1,320 @@
+/*
+ *  IXCobraToStatsdBot.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXCobraToStatsdBot.h"
+#include "IXQueueManager.h"
+#include "IXStatsdClient.h"
+
+#include <atomic>
+#include <chrono>
+#include <condition_variable>
+#include <ixcobra/IXCobraConnection.h>
+#include <spdlog/spdlog.h>
+#include <sstream>
+#include <thread>
+#include <vector>
+
+namespace ix
+{
+    // fields are command line argument that can be specified multiple times
+    std::vector<std::string> parseFields(const std::string& fields)
+    {
+        std::vector<std::string> tokens;
+
+        // Split by \n
+        std::string token;
+        std::stringstream tokenStream(fields);
+
+        while (std::getline(tokenStream, token))
+        {
+            tokens.push_back(token);
+        }
+
+        return tokens;
+    }
+
+    //
+    // Extract an attribute from a Json Value.
+    // extractAttr("foo.bar", {"foo": {"bar": "baz"}}) => baz
+    //
+    Json::Value extractAttr(const std::string& attr, const Json::Value& jsonValue)
+    {
+        // Split by .
+        std::string token;
+        std::stringstream tokenStream(attr);
+
+        Json::Value val(jsonValue);
+
+        while (std::getline(tokenStream, token, '.'))
+        {
+            val = val[token];
+        }
+
+        return val;
+    }
+
+    int cobra_to_statsd_bot(const ix::CobraConfig& config,
+                            const std::string& channel,
+                            const std::string& filter,
+                            const std::string& position,
+                            StatsdClient& statsdClient,
+                            const std::string& fields,
+                            const std::string& gauge,
+                            const std::string& timer,
+                            bool verbose,
+                            size_t maxQueueSize,
+                            bool enableHeartbeat,
+                            int runtime)
+    {
+        ix::CobraConnection conn;
+        conn.configure(config);
+        conn.connect();
+
+        auto tokens = parseFields(fields);
+
+        Json::FastWriter jsonWriter;
+        std::atomic<uint64_t> sentCount(0);
+        std::atomic<uint64_t> receivedCount(0);
+        std::atomic<bool> stop(false);
+        std::atomic<bool> fatalCobraError(false);
+
+        QueueManager queueManager(maxQueueSize);
+
+        auto progress = [&sentCount, &receivedCount, &stop] {
+            while (!stop)
+            {
+                spdlog::info("messages received {} sent {}", receivedCount, sentCount);
+
+                auto duration = std::chrono::seconds(1);
+                std::this_thread::sleep_for(duration);
+            }
+
+            spdlog::info("timer thread done");
+        };
+
+        std::thread t1(progress);
+
+        auto heartbeat = [&sentCount, &receivedCount, &stop, &enableHeartbeat] {
+            std::string state("na");
+
+            if (!enableHeartbeat) return;
+
+            while (!stop)
+            {
+                std::stringstream ss;
+                ss << "messages received " << receivedCount;
+                ss << "messages sent " << sentCount;
+
+                std::string currentState = ss.str();
+
+                if (currentState == state)
+                {
+                    spdlog::error("no messages received or sent for 1 minute, exiting");
+                    exit(1);
+                }
+                state = currentState;
+
+                auto duration = std::chrono::minutes(1);
+                std::this_thread::sleep_for(duration);
+            }
+
+            spdlog::info("heartbeat thread done");
+        };
+
+        std::thread t2(heartbeat);
+
+        auto statsdSender = [&statsdClient, &queueManager, &sentCount, &tokens, &stop, &gauge, &timer, &fatalCobraError, &verbose] {
+            while (true)
+            {
+                Json::Value msg = queueManager.pop();
+
+                if (stop) return;
+                if (msg.isNull()) continue;
+
+                std::string id;
+                for (auto&& attr : tokens)
+                {
+                    id += ".";
+                    auto val = extractAttr(attr, msg);
+                    id += val.asString();
+                }
+
+                if (gauge.empty() && timer.empty())
+                {
+                    statsdClient.count(id, 1);
+                }
+                else
+                {
+                    std::string attrName = (!gauge.empty()) ? gauge : timer;
+                    auto val = extractAttr(attrName, msg);
+                    size_t x;
+
+                    if (val.isInt())
+                    {
+                        x = (size_t) val.asInt();
+                    }
+                    else if (val.isInt64())
+                    {
+                        x = (size_t) val.asInt64();
+                    }
+                    else if (val.isUInt())
+                    {
+                        x = (size_t) val.asUInt();
+                    }
+                    else if (val.isUInt64())
+                    {
+                        x = (size_t) val.asUInt64();
+                    }
+                    else if (val.isDouble())
+                    {
+                        x = (size_t) val.asUInt64();
+                    }
+                    else
+                    {
+                        spdlog::error("Gauge {} is not a numberic type", gauge);
+                        fatalCobraError = true;
+                        break;
+                    }
+
+                    if (verbose)
+                    {
+                        spdlog::info("{} - {} -> {}", id, attrName, x);
+                    }
+
+                    if (!gauge.empty())
+                    {
+                        statsdClient.gauge(id, x);
+                    }
+                    else
+                    {
+                        statsdClient.timing(id, x);
+                    }
+                }
+
+                sentCount += 1;
+            }
+        };
+
+        std::thread t3(statsdSender);
+
+        conn.setEventCallback(
+            [&conn, &channel, &filter, &position, &jsonWriter, verbose, &queueManager, &receivedCount, &fatalCobraError](
+                ix::CobraConnectionEventType eventType,
+                const std::string& errMsg,
+                const ix::WebSocketHttpHeaders& headers,
+                const std::string& subscriptionId,
+                CobraConnection::MsgId msgId) {
+                if (eventType == ix::CobraConnection_EventType_Open)
+                {
+                    spdlog::info("Subscriber connected");
+
+                    for (auto it : headers)
+                    {
+                        spdlog::info("{}: {}", it.first, it.second);
+                    }
+                }
+                if (eventType == ix::CobraConnection_EventType_Closed)
+                {
+                    spdlog::info("Subscriber closed");
+                }
+                else if (eventType == ix::CobraConnection_EventType_Authenticated)
+                {
+                    spdlog::info("Subscriber authenticated");
+                    conn.subscribe(channel,
+                                   filter,
+                                   position,
+                                   [&jsonWriter, &queueManager, verbose, &receivedCount](
+                                       const Json::Value& msg, const std::string& position) {
+                                       if (verbose)
+                                       {
+                                           spdlog::info("Subscriber received message {} -> {}", position, jsonWriter.write(msg));
+                                       }
+
+                                       receivedCount++;
+
+                                       ++receivedCount;
+                                       queueManager.add(msg);
+                                   });
+                }
+                else if (eventType == ix::CobraConnection_EventType_Subscribed)
+                {
+                    spdlog::info("Subscriber: subscribed to channel {}", subscriptionId);
+                }
+                else if (eventType == ix::CobraConnection_EventType_UnSubscribed)
+                {
+                    spdlog::info("Subscriber: unsubscribed from channel {}", subscriptionId);
+                }
+                else if (eventType == ix::CobraConnection_EventType_Error)
+                {
+                    spdlog::error("Subscriber: error {}", errMsg);
+                }
+                else if (eventType == ix::CobraConnection_EventType_Published)
+                {
+                    spdlog::error("Published message hacked: {}", msgId);
+                }
+                else if (eventType == ix::CobraConnection_EventType_Pong)
+                {
+                    spdlog::info("Received websocket pong");
+                }
+                else if (eventType == ix::CobraConnection_EventType_Handshake_Error)
+                {
+                    spdlog::error("Subscriber: Handshake error: {}", errMsg);
+                    fatalCobraError = true;
+                }
+                else if (eventType == ix::CobraConnection_EventType_Authentication_Error)
+                {
+                    spdlog::error("Subscriber: Authentication error: {}", errMsg);
+                    fatalCobraError = true;
+                }
+                else if (eventType == ix::CobraConnection_EventType_Subscription_Error)
+                {
+                    spdlog::error("Subscriber: Subscription error: {}", errMsg);
+                    fatalCobraError = true;
+                }
+            });
+
+        // Run forever
+        if (runtime == -1)
+        {
+            while (true)
+            {
+                auto duration = std::chrono::seconds(1);
+                std::this_thread::sleep_for(duration);
+
+                if (fatalCobraError) break;
+            }
+        }
+        // Run for a duration, used by unittesting now
+        else
+        {
+            for (int i = 0 ; i < runtime; ++i)
+            {
+                auto duration = std::chrono::seconds(1);
+                std::this_thread::sleep_for(duration);
+
+                if (fatalCobraError) break;
+            }
+        }
+
+        //
+        // Cleanup.
+        // join all the bg threads and stop them.
+        //
+        conn.disconnect();
+        stop = true;
+
+        // progress thread
+        t1.join();
+
+        // heartbeat thread
+        if (t2.joinable()) t2.join();
+
+        // statsd sender thread
+        t3.join();
+
+        return fatalCobraError ? -1 : (int) sentCount;
+    }
+} // namespace ix

ixbots/ixbots/IXCobraToStatsdBot.h

@@ -0,0 +1,27 @@
+/*
+ *  IXCobraToStatsdBot.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019-2020 Machine Zone, Inc. All rights reserved.
+ */
+#pragma once
+
+#include <ixcobra/IXCobraConfig.h>
+#include <ixbots/IXStatsdClient.h>
+#include <string>
+#include <stddef.h>
+
+namespace ix
+{
+    int cobra_to_statsd_bot(const ix::CobraConfig& config,
+                            const std::string& channel,
+                            const std::string& filter,
+                            const std::string& position,
+                            StatsdClient& statsdClient,
+                            const std::string& fields,
+                            const std::string& gauge,
+                            const std::string& timer,
+                            bool verbose,
+                            size_t maxQueueSize,
+                            bool enableHeartbeat,
+                            int runtime);
+} // namespace ix

ixbots/ixbots/IXQueueManager.cpp

@@ -0,0 +1,66 @@
+/*
+ *  IXQueueManager.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXQueueManager.h"
+#include <vector>
+#include <algorithm>
+
+namespace ix
+{
+    Json::Value QueueManager::pop()
+    {
+        std::unique_lock<std::mutex> lock(_mutex);
+
+        if (_queues.empty())
+        {
+            Json::Value val;
+            return val;
+        }
+
+        std::vector<std::string> games;
+        for (auto it : _queues)
+        {
+            games.push_back(it.first);
+        }
+
+        std::random_shuffle(games.begin(), games.end());
+        std::string game = games[0];
+
+        auto duration = std::chrono::seconds(1);
+        _condition.wait_for(lock, duration);
+
+        if (_queues[game].empty())
+        {
+            Json::Value val;
+            return val;
+        }
+
+        auto msg = _queues[game].front();
+        _queues[game].pop();
+        return msg;
+    }
+
+    void QueueManager::add(Json::Value msg)
+    {
+        std::unique_lock<std::mutex> lock(_mutex);
+
+        std::string game;
+        if (msg.isMember("device") && msg["device"].isMember("game"))
+        {
+            game = msg["device"]["game"].asString();
+        }
+
+        if (game.empty()) return;
+
+        // if the sending is not fast enough there is no point
+        // in queuing too many events.
+        if (_queues[game].size() < _maxQueueSize)
+        {
+            _queues[game].push(msg);
+            _condition.notify_one();
+        }
+    }
+}

ixbots/ixbots/IXQueueManager.h

@@ -0,0 +1,35 @@
+/*
+ *  IXQueueManager.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include <stddef.h>
+#include <json/json.h>
+#include <mutex>
+#include <condition_variable>
+#include <queue>
+#include <map>
+
+namespace ix
+{
+    class QueueManager
+    {
+    public:
+        QueueManager(size_t maxQueueSize)
+            : _maxQueueSize(maxQueueSize)
+        {
+        }
+
+        Json::Value pop();
+        void add(Json::Value msg);
+
+    private:
+        std::map<std::string, std::queue<Json::Value>> _queues;
+        std::mutex _mutex;
+        std::condition_variable _condition;
+        size_t _maxQueueSize;
+    };
+}

ixbots/ixbots/IXStatsdClient.cpp

@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2014, Rex
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the {organization} nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ *  IXStatsdClient.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
+ */
+
+// Adapted from statsd-client-cpp
+// test with netcat as a server: `nc -ul 8125`
+
+#include "IXStatsdClient.h"
+
+#include <ixwebsocket/IXNetSystem.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <iostream>
+
+namespace ix
+{
+    StatsdClient::StatsdClient(const std::string& host,
+                               int port,
+                               const std::string& prefix)
+    : _host(host)
+      , _port(port)
+      , _prefix(prefix)
+      , _stop(false)
+    {
+        _thread = std::thread([this]
+        {
+            while (!_stop)
+            {
+                flushQueue();
+                std::this_thread::sleep_for(std::chrono::seconds(1));
+            }
+        });
+    }
+
+    StatsdClient::~StatsdClient()
+    {
+        _stop = true;
+        if (_thread.joinable()) _thread.join();
+
+        _socket.close();
+    }
+
+    bool StatsdClient::init(std::string& errMsg)
+    {
+        return _socket.init(_host, _port, errMsg);
+    }
+
+    /* will change the original string */
+    void StatsdClient::cleanup(std::string& key)
+    {
+        size_t pos = key.find_first_of(":|@");
+        while (pos != std::string::npos)
+        {
+            key[pos] = '_';
+            pos = key.find_first_of(":|@");
+        }
+    }
+
+    int StatsdClient::dec(const std::string& key)
+    {
+        return count(key, -1);
+    }
+
+    int StatsdClient::inc(const std::string& key)
+    {
+        return count(key, 1);
+    }
+
+    int StatsdClient::count(const std::string& key, size_t value)
+    {
+        return send(key, value, "c");
+    }
+
+    int StatsdClient::gauge(const std::string& key, size_t value)
+    {
+        return send(key, value, "g");
+    }
+
+    int StatsdClient::timing(const std::string& key, size_t ms)
+    {
+        return send(key, ms, "ms");
+    }
+
+    int StatsdClient::send(std::string key, size_t value, const std::string& type)
+    {
+        cleanup(key);
+
+        char buf[256];
+        snprintf(buf, sizeof(buf), "%s%s:%zd|%s\n",
+                 _prefix.c_str(), key.c_str(), value, type.c_str());
+
+        enqueue(buf);
+        return 0;
+    }
+
+    void StatsdClient::enqueue(const std::string& message)
+    {
+        std::lock_guard<std::mutex> lock(_mutex);
+        _queue.push_back(message);
+    }
+
+    void StatsdClient::flushQueue()
+    {
+        std::lock_guard<std::mutex> lock(_mutex);
+
+        while (!_queue.empty())
+        {
+            auto message = _queue.front();
+            auto ret = _socket.sendto(message);
+            if (ret != 0)
+            {
+                std::cerr << "error: "
+                          << strerror(UdpSocket::getErrno())
+                          << std::endl;
+            }
+            _queue.pop_front();
+        }
+    }
+} // end namespace ix

ixbots/ixbots/IXStatsdClient.h

@@ -0,0 +1,58 @@
+/*
+ *  IXStatsdClient.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include <ixwebsocket/IXUdpSocket.h>
+
+#include <string>
+#include <thread>
+#include <deque>
+#include <mutex>
+#include <atomic>
+
+namespace ix
+{
+    class StatsdClient
+    {
+    public:
+        StatsdClient(const std::string& host="127.0.0.1",
+                     int port=8125,
+                     const std::string& prefix = "");
+        ~StatsdClient();
+
+        bool init(std::string& errMsg);
+        int inc(const std::string& key);
+        int dec(const std::string& key);
+        int count(const std::string& key, size_t value);
+        int gauge(const std::string& key, size_t value);
+        int timing(const std::string& key, size_t ms);
+
+    private:
+        void enqueue(const std::string& message);
+
+        /* (Low Level Api) manually send a message
+         * type = "c", "g" or "ms"
+         */
+        int send(std::string key, size_t value, const std::string& type);
+
+        void cleanup(std::string& key);
+        void flushQueue();
+
+        UdpSocket _socket;
+
+        std::string _host;
+        int _port;
+        std::string _prefix;
+
+        std::atomic<bool> _stop;
+        std::thread _thread;
+        std::mutex _mutex; // for the queue
+
+        std::deque<std::string> _queue;
+    };
+
+} // end namespace ix

ixcobra/CMakeLists.txt

@@ -0,0 +1,36 @@
+#
+# Author: Benjamin Sergeant
+# Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+#
+
+set (IXCOBRA_SOURCES
+    ixcobra/IXCobraConnection.cpp
+    ixcobra/IXCobraMetricsThreadedPublisher.cpp
+    ixcobra/IXCobraMetricsPublisher.cpp
+)
+
+set (IXCOBRA_HEADERS
+    ixcobra/IXCobraConnection.h
+    ixcobra/IXCobraMetricsThreadedPublisher.h
+    ixcobra/IXCobraMetricsPublisher.h
+    ixcobra/IXCobraConfig.h
+)
+
+add_library(ixcobra STATIC
+    ${IXCOBRA_SOURCES}
+    ${IXCOBRA_HEADERS}
+)
+
+find_package(JsonCpp)
+if (NOT JSONCPP_FOUND)
+  set(JSONCPP_INCLUDE_DIRS ../third_party/jsoncpp)
+endif()
+
+set(IXCOBRA_INCLUDE_DIRS
+    .
+    ..
+    ../ixcore
+    ../ixcrypto
+    ${JSONCPP_INCLUDE_DIRS})
+
+target_include_directories( ixcobra PUBLIC ${IXCOBRA_INCLUDE_DIRS} )

ixcobra/ixcobra/IXCobraConfig.h

@@ -0,0 +1,35 @@
+/*
+ *  IXCobraConfig.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include <ixwebsocket/IXWebSocketPerMessageDeflateOptions.h>
+#include <ixwebsocket/IXSocketTLSOptions.h>
+
+namespace ix
+{
+    struct CobraConfig
+    {
+        std::string appkey;
+        std::string endpoint;
+        std::string rolename;
+        std::string rolesecret;
+        WebSocketPerMessageDeflateOptions webSocketPerMessageDeflateOptions;
+        SocketTLSOptions socketTLSOptions;
+
+        CobraConfig(const std::string& a = std::string(),
+                    const std::string& e = std::string(),
+                    const std::string& r = std::string(),
+                    const std::string& s = std::string())
+            : appkey(a)
+            , endpoint(e)
+            , rolename(r)
+            , rolesecret(s)
+        {
+            ;
+        }
+    };
+} // namespace ix

ixcobra/ixcobra/IXCobraConnection.cpp

@@ -0,0 +1,680 @@
+/*
+ *  IXCobraConnection.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017-2018 Machine Zone. All rights reserved.
+ */
+
+#include "IXCobraConnection.h"
+#include <ixcrypto/IXHMac.h>
+#include <ixwebsocket/IXWebSocket.h>
+#include <ixwebsocket/IXSocketTLSOptions.h>
+
+#include <algorithm>
+#include <stdexcept>
+#include <cmath>
+#include <cassert>
+#include <cstring>
+#include <iostream>
+#include <sstream>
+
+
+namespace ix
+{
+    TrafficTrackerCallback CobraConnection::_trafficTrackerCallback = nullptr;
+    PublishTrackerCallback CobraConnection::_publishTrackerCallback = nullptr;
+    constexpr size_t CobraConnection::kQueueMaxSize;
+    constexpr CobraConnection::MsgId CobraConnection::kInvalidMsgId;
+    constexpr int CobraConnection::kPingIntervalSecs;
+
+    CobraConnection::CobraConnection() :
+        _webSocket(new WebSocket()),
+        _publishMode(CobraConnection_PublishMode_Immediate),
+        _authenticated(false),
+        _eventCallback(nullptr),
+        _id(1)
+    {
+        _pdu["action"] = "rtm/publish";
+
+        _webSocket->addSubProtocol("json");
+        initWebSocketOnMessageCallback();
+    }
+
+    CobraConnection::~CobraConnection()
+    {
+        disconnect();
+        setEventCallback(nullptr);
+    }
+
+    void CobraConnection::setTrafficTrackerCallback(const TrafficTrackerCallback& callback)
+    {
+        _trafficTrackerCallback = callback;
+    }
+
+    void CobraConnection::resetTrafficTrackerCallback()
+    {
+        setTrafficTrackerCallback(nullptr);
+    }
+
+    void CobraConnection::invokeTrafficTrackerCallback(size_t size, bool incoming)
+    {
+        if (_trafficTrackerCallback)
+        {
+            _trafficTrackerCallback(size, incoming);
+        }
+    }
+
+    void CobraConnection::setPublishTrackerCallback(const PublishTrackerCallback& callback)
+    {
+        _publishTrackerCallback = callback;
+    }
+
+    void CobraConnection::resetPublishTrackerCallback()
+    {
+        setPublishTrackerCallback(nullptr);
+    }
+
+    void CobraConnection::invokePublishTrackerCallback(bool sent, bool acked)
+    {
+        if (_publishTrackerCallback)
+        {
+            _publishTrackerCallback(sent, acked);
+        }
+    }
+
+    void CobraConnection::setEventCallback(const EventCallback& eventCallback)
+    {
+        std::lock_guard<std::mutex> lock(_eventCallbackMutex);
+        _eventCallback = eventCallback;
+    }
+
+    void CobraConnection::invokeEventCallback(ix::CobraConnectionEventType eventType,
+                                              const std::string& errorMsg,
+                                              const WebSocketHttpHeaders& headers,
+                                              const std::string& subscriptionId,
+                                              CobraConnection::MsgId msgId)
+    {
+        std::lock_guard<std::mutex> lock(_eventCallbackMutex);
+        if (_eventCallback)
+        {
+            _eventCallback(eventType, errorMsg, headers, subscriptionId, msgId);
+        }
+    }
+
+    void CobraConnection::invokeErrorCallback(const std::string& errorMsg,
+                                              const std::string& serializedPdu)
+    {
+        std::stringstream ss;
+        ss << errorMsg << " : received pdu => " << serializedPdu;
+        invokeEventCallback(ix::CobraConnection_EventType_Error, ss.str());
+    }
+
+    void CobraConnection::disconnect()
+    {
+        _authenticated = false;
+        _webSocket->stop();
+    }
+
+    void CobraConnection::initWebSocketOnMessageCallback()
+    {
+        _webSocket->setOnMessageCallback(
+            [this](const ix::WebSocketMessagePtr& msg)
+            {
+                CobraConnection::invokeTrafficTrackerCallback(msg->wireSize, true);
+
+                std::stringstream ss;
+                if (msg->type == ix::WebSocketMessageType::Open)
+                {
+                    invokeEventCallback(ix::CobraConnection_EventType_Open,
+                                        std::string(),
+                                        msg->openInfo.headers);
+                    sendHandshakeMessage();
+                }
+                else if (msg->type == ix::WebSocketMessageType::Close)
+                {
+                    _authenticated = false;
+
+                    std::stringstream ss;
+                    ss << "Close code " << msg->closeInfo.code;
+                    ss << " reason " << msg->closeInfo.reason;
+                    invokeEventCallback(ix::CobraConnection_EventType_Closed,
+                                        ss.str());
+                }
+                else if (msg->type == ix::WebSocketMessageType::Message)
+                {
+                    Json::Value data;
+                    Json::Reader reader;
+                    if (!reader.parse(msg->str, data))
+                    {
+                        invokeErrorCallback("Invalid json", msg->str);
+                        return;
+                    }
+
+                    if (!data.isMember("action"))
+                    {
+                        invokeErrorCallback("Missing action", msg->str);
+                        return;
+                    }
+
+                    auto action = data["action"].asString();
+
+                    if (action == "auth/handshake/ok")
+                    {
+                        if (!handleHandshakeResponse(data))
+                        {
+                            invokeErrorCallback("Error extracting nonce from handshake response", msg->str);
+                        }
+                    }
+                    else if (action == "auth/handshake/error")
+                    {
+                        invokeEventCallback(ix::CobraConnection_EventType_Handshake_Error,
+                                            msg->str);
+                    }
+                    else if (action == "auth/authenticate/ok")
+                    {
+                        _authenticated = true;
+                        invokeEventCallback(ix::CobraConnection_EventType_Authenticated);
+                        flushQueue();
+                    }
+                    else if (action == "auth/authenticate/error")
+                    {
+                        invokeEventCallback(ix::CobraConnection_EventType_Authentication_Error,
+                                            msg->str);
+                    }
+                    else if (action == "rtm/subscription/data")
+                    {
+                        handleSubscriptionData(data);
+                    }
+                    else if (action == "rtm/subscribe/ok")
+                    {
+                        if (!handleSubscriptionResponse(data))
+                        {
+                            invokeErrorCallback("Error processing subscribe response", msg->str);
+                        }
+                    }
+                    else if (action == "rtm/subscribe/error")
+                    {
+                        invokeEventCallback(ix::CobraConnection_EventType_Subscription_Error,
+                                            msg->str);
+                    }
+                    else if (action == "rtm/unsubscribe/ok")
+                    {
+                        if (!handleUnsubscriptionResponse(data))
+                        {
+                            invokeErrorCallback("Error processing unsubscribe response", msg->str);
+                        }
+                    }
+                    else if (action == "rtm/unsubscribe/error")
+                    {
+                        invokeErrorCallback("Unsubscription error", msg->str);
+                    }
+                    else if (action == "rtm/publish/ok")
+                    {
+                        if (!handlePublishResponse(data))
+                        {
+                            invokeErrorCallback("Error processing publish response", msg->str);
+                        }
+                    }
+                    else if (action == "rtm/publish/error")
+                    {
+                        invokeErrorCallback("Publish error", msg->str);
+                    }
+                    else
+                    {
+                        invokeErrorCallback("Un-handled message type", msg->str);
+                    }
+                }
+                else if (msg->type == ix::WebSocketMessageType::Error)
+                {
+                    std::stringstream ss;
+                    ss << "Connection error: " << msg->errorInfo.reason      << std::endl;
+                    ss << "#retries: "         << msg->errorInfo.retries     << std::endl;
+                    ss << "Wait time(ms): "    << msg->errorInfo.wait_time   << std::endl;
+                    ss << "HTTP Status: "      << msg->errorInfo.http_status << std::endl;
+                    invokeErrorCallback(ss.str(), std::string());
+                }
+                else if (msg->type == ix::WebSocketMessageType::Pong)
+                {
+                    invokeEventCallback(ix::CobraConnection_EventType_Pong);
+                }
+        });
+    }
+
+    void CobraConnection::setPublishMode(CobraConnectionPublishMode publishMode)
+    {
+        _publishMode = publishMode;
+    }
+
+    CobraConnectionPublishMode CobraConnection::getPublishMode()
+    {
+        return _publishMode;
+    }
+
+    void CobraConnection::configure(const std::string& appkey,
+                                    const std::string& endpoint,
+                                    const std::string& rolename,
+                                    const std::string& rolesecret,
+                                    const WebSocketPerMessageDeflateOptions& webSocketPerMessageDeflateOptions,
+                                    const SocketTLSOptions& socketTLSOptions)
+    {
+        _roleName = rolename;
+        _roleSecret = rolesecret;
+
+        std::stringstream ss;
+        ss << endpoint;
+        ss << "/v2?appkey=";
+        ss << appkey;
+
+        std::string url = ss.str();
+        _webSocket->setUrl(url);
+        _webSocket->setPerMessageDeflateOptions(webSocketPerMessageDeflateOptions);
+        _webSocket->setTLSOptions(socketTLSOptions);
+
+        // Send a websocket ping every N seconds (N = 30) now
+        // This should keep the connection open and prevent some load balancers such as
+        // the Amazon one from shutting it down
+        _webSocket->setPingInterval(kPingIntervalSecs);
+    }
+
+    void CobraConnection::configure(const ix::CobraConfig& config)
+    {
+        configure(config.appkey,
+                  config.endpoint,
+                  config.rolename,
+                  config.rolesecret,
+                  config.webSocketPerMessageDeflateOptions,
+                  config.socketTLSOptions);
+    }
+
+    //
+    // Handshake message schema.
+    //
+    // handshake = {
+    //     "action": "auth/handshake",
+    //     "body": {
+    //         "data": {
+    //             "role": role
+    //         },
+    //         "method": "role_secret"
+    //     },
+    // }
+    //
+    //
+    bool CobraConnection::sendHandshakeMessage()
+    {
+        Json::Value data;
+        data["role"] = _roleName;
+
+        Json::Value body;
+        body["data"] = data;
+        body["method"] = "role_secret";
+
+        Json::Value pdu;
+        pdu["action"] = "auth/handshake";
+        pdu["body"] = body;
+        pdu["id"] = Json::UInt64(_id++);
+
+        std::string serializedJson = serializeJson(pdu);
+        CobraConnection::invokeTrafficTrackerCallback(serializedJson.size(), false);
+
+        return _webSocket->send(serializedJson).success;
+    }
+
+    //
+    // Extract the nonce from the handshake response
+    // use it to compute a hash during authentication
+    //
+    // {
+    //     "action": "auth/handshake/ok",
+    //     "body": {
+    //         "data": {
+    //             "nonce": "MTI0Njg4NTAyMjYxMzgxMzgzMg==",
+    //             "version": "0.0.24"
+    //         }
+    //     }
+    // }
+    //
+    bool CobraConnection::handleHandshakeResponse(const Json::Value& pdu)
+    {
+        if (!pdu.isObject()) return false;
+
+        if (!pdu.isMember("body")) return false;
+        Json::Value body = pdu["body"];
+
+        if (!body.isMember("data")) return false;
+        Json::Value data = body["data"];
+
+        if (!data.isMember("nonce")) return false;
+        Json::Value nonce = data["nonce"];
+
+        if (!nonce.isString()) return false;
+
+        return sendAuthMessage(nonce.asString());
+    }
+
+    //
+    // Authenticate message schema.
+    //
+    // challenge = {
+    //     "action": "auth/authenticate",
+    //     "body": {
+    //         "method": "role_secret",
+    //         "credentials": {
+    //             "hash": computeHash(secret, nonce)
+    //         }
+    //     },
+    // }
+    //
+    bool CobraConnection::sendAuthMessage(const std::string& nonce)
+    {
+        Json::Value credentials;
+        credentials["hash"] = hmac(nonce, _roleSecret);
+
+        Json::Value body;
+        body["credentials"] = credentials;
+        body["method"] = "role_secret";
+
+        Json::Value pdu;
+        pdu["action"] = "auth/authenticate";
+        pdu["body"] = body;
+        pdu["id"] = Json::UInt64(_id++);
+
+        std::string serializedJson = serializeJson(pdu);
+        CobraConnection::invokeTrafficTrackerCallback(serializedJson.size(), false);
+
+        return _webSocket->send(serializedJson).success;
+    }
+
+    bool CobraConnection::handleSubscriptionResponse(const Json::Value& pdu)
+    {
+        if (!pdu.isObject()) return false;
+
+        if (!pdu.isMember("body")) return false;
+        Json::Value body = pdu["body"];
+
+        if (!body.isMember("subscription_id")) return false;
+        Json::Value subscriptionId = body["subscription_id"];
+
+        if (!subscriptionId.isString()) return false;
+
+        invokeEventCallback(ix::CobraConnection_EventType_Subscribed,
+                            std::string(), WebSocketHttpHeaders(),
+                            subscriptionId.asString());
+        return true;
+    }
+
+    bool CobraConnection::handleUnsubscriptionResponse(const Json::Value& pdu)
+    {
+        if (!pdu.isObject()) return false;
+
+        if (!pdu.isMember("body")) return false;
+        Json::Value body = pdu["body"];
+
+        if (!body.isMember("subscription_id")) return false;
+        Json::Value subscriptionId = body["subscription_id"];
+
+        if (!subscriptionId.isString()) return false;
+
+        invokeEventCallback(ix::CobraConnection_EventType_UnSubscribed,
+                            std::string(), WebSocketHttpHeaders(),
+                            subscriptionId.asString());
+        return true;
+    }
+
+    bool CobraConnection::handleSubscriptionData(const Json::Value& pdu)
+    {
+        if (!pdu.isObject()) return false;
+
+        if (!pdu.isMember("body")) return false;
+        Json::Value body = pdu["body"];
+
+        // Identify subscription_id, so that we can find
+        // which callback to execute
+        if (!body.isMember("subscription_id")) return false;
+        Json::Value subscriptionId = body["subscription_id"];
+
+        std::lock_guard<std::mutex> lock(_cbsMutex);
+        auto cb = _cbs.find(subscriptionId.asString());
+        if (cb == _cbs.end()) return false; // cannot find callback
+
+        // Extract messages now
+        if (!body.isMember("messages")) return false;
+        Json::Value messages = body["messages"];
+
+        if (!body.isMember("position")) return false;
+        std::string position = body["position"].asString();
+
+        for (auto&& msg : messages)
+        {
+            cb->second(msg, position);
+        }
+
+        return true;
+    }
+
+    bool CobraConnection::handlePublishResponse(const Json::Value& pdu)
+    {
+        if (!pdu.isObject()) return false;
+
+        if (!pdu.isMember("id")) return false;
+        Json::Value id = pdu["id"];
+
+        if (!id.isUInt64()) return false;
+
+        uint64_t msgId = id.asUInt64();
+
+        invokeEventCallback(ix::CobraConnection_EventType_Published,
+                            std::string(), WebSocketHttpHeaders(),
+                            std::string(), msgId);
+
+        invokePublishTrackerCallback(false, true);
+
+        return true;
+    }
+
+    bool CobraConnection::connect()
+    {
+        _webSocket->start();
+        return true;
+    }
+
+    bool CobraConnection::isConnected() const
+    {
+        return _webSocket->getReadyState() == ix::ReadyState::Open;
+    }
+
+    bool CobraConnection::isAuthenticated() const
+    {
+        return isConnected() && _authenticated;
+    }
+
+    std::string CobraConnection::serializeJson(const Json::Value& value)
+    {
+        std::lock_guard<std::mutex> lock(_jsonWriterMutex);
+        return _jsonWriter.write(value);
+    }
+
+    std::pair<CobraConnection::MsgId, std::string> CobraConnection::prePublish(
+        const Json::Value& channels,
+        const Json::Value& msg,
+        bool addToQueue)
+    {
+        std::lock_guard<std::mutex> lock(_prePublishMutex);
+
+        invokePublishTrackerCallback(true, false);
+
+        CobraConnection::MsgId msgId = _id;
+
+        _body["channels"] = channels;
+        _body["message"] = msg;
+        _pdu["body"] = _body;
+        _pdu["id"] = Json::UInt64(_id++);
+
+        std::string serializedJson = serializeJson(_pdu);
+
+        if (addToQueue)
+        {
+            enqueue(serializedJson);
+        }
+
+        return std::make_pair(msgId, serializedJson);
+    }
+
+    bool CobraConnection::publishNext()
+    {
+        std::lock_guard<std::mutex> lock(_queueMutex);
+
+        if (_messageQueue.empty()) return true;
+
+        auto&& msg = _messageQueue.back();
+        if (!_authenticated || !publishMessage(msg))
+        {
+            return false;
+        }
+        _messageQueue.pop_back();
+        return true;
+    }
+
+    //
+    // publish is not thread safe as we are trying to reuse some Json objects.
+    //
+    CobraConnection::MsgId CobraConnection::publish(const Json::Value& channels,
+                                                    const Json::Value& msg)
+    {
+        auto p = prePublish(channels, msg, false);
+        auto msgId = p.first;
+        auto serializedJson = p.second;
+
+        //
+        // 1. When we use batch mode, we just enqueue and will do the flush explicitely
+        // 2. When we aren't authenticated yet to the cobra server, we need to enqueue
+        //    and retry later
+        // 3. If the network connection was droped (WebSocket::send will return false),
+        //    it means the message won't be sent so we need to enqueue as well.
+        //
+        // The order of the conditionals is important.
+        //
+        if (_publishMode == CobraConnection_PublishMode_Batch || !_authenticated ||
+            !publishMessage(serializedJson))
+        {
+            enqueue(serializedJson);
+        }
+
+        return msgId;
+    }
+
+    void CobraConnection::subscribe(const std::string& channel,
+                                    const std::string& filter,
+                                    const std::string& position,
+                                    SubscriptionCallback cb)
+    {
+        // Create and send a subscribe pdu
+        Json::Value body;
+        body["channel"] = channel;
+
+        if (!filter.empty())
+        {
+            body["filter"] = filter;
+        }
+
+        if (!position.empty())
+        {
+            body["position"] = position;
+        }
+
+        Json::Value pdu;
+        pdu["action"] = "rtm/subscribe";
+        pdu["body"] = body;
+        pdu["id"] = Json::UInt64(_id++);
+
+        _webSocket->send(pdu.toStyledString());
+
+        // Set the callback
+        std::lock_guard<std::mutex> lock(_cbsMutex);
+        _cbs[channel] = cb;
+    }
+
+    void CobraConnection::unsubscribe(const std::string& channel)
+    {
+        {
+            std::lock_guard<std::mutex> lock(_cbsMutex);
+            auto cb = _cbs.find(channel);
+            if (cb == _cbs.end()) return;
+
+            _cbs.erase(cb);
+        }
+
+        // Create and send an unsubscribe pdu
+        Json::Value body;
+        body["subscription_id"] = channel;
+
+        Json::Value pdu;
+        pdu["action"] = "rtm/unsubscribe";
+        pdu["body"] = body;
+        pdu["id"] = Json::UInt64(_id++);
+
+        _webSocket->send(pdu.toStyledString());
+    }
+
+    //
+    // Enqueue strategy drops old messages when we are at full capacity
+    //
+    // If we want to keep only 3 items max in the queue:
+    //
+    // enqueue(A) -> [A]
+    // enqueue(B) -> [B, A]
+    // enqueue(C) -> [C, B, A]
+    // enqueue(D) -> [D, C, B] -- now we drop A, the oldest message,
+    //                         -- and keep the 'fresh ones'
+    //
+    void CobraConnection::enqueue(const std::string& msg)
+    {
+        std::lock_guard<std::mutex> lock(_queueMutex);
+
+        if (_messageQueue.size() == CobraConnection::kQueueMaxSize)
+        {
+            _messageQueue.pop_back();
+        }
+        _messageQueue.push_front(msg);
+    }
+
+    //
+    // We process messages back (oldest) to front (newest) to respect ordering
+    // when sending them. If we fail to send something, we put it back in the queue
+    // at the end we picked it up originally (at the end).
+    //
+    bool CobraConnection::flushQueue()
+    {
+        while (!isQueueEmpty())
+        {
+            bool ok = publishNext();
+            if (!ok) return false;
+        }
+
+        return true;
+    }
+
+    bool CobraConnection::isQueueEmpty()
+    {
+        std::lock_guard<std::mutex> lock(_queueMutex);
+        return _messageQueue.empty();
+    }
+
+    bool CobraConnection::publishMessage(const std::string& serializedJson)
+    {
+        auto webSocketSendInfo = _webSocket->send(serializedJson);
+        CobraConnection::invokeTrafficTrackerCallback(webSocketSendInfo.wireSize,
+                                                      false);
+        return webSocketSendInfo.success;
+    }
+
+    void CobraConnection::suspend()
+    {
+        disconnect();
+    }
+
+    void CobraConnection::resume()
+    {
+        connect();
+    }
+
+} // namespace ix

ixcobra/ixcobra/IXCobraConnection.h

@@ -6,24 +6,41 @@
 
 #pragma once
 
+#include <ixwebsocket/IXWebSocketHttpHeaders.h>
+#include <ixwebsocket/IXWebSocketPerMessageDeflateOptions.h>
+#include <json/json.h>
+#include <memory>
 #include <mutex>
 #include <queue>
 #include <string>
 #include <thread>
 #include <unordered_map>
+#include <limits>
 
-#include <jsoncpp/json/json.h>
-#include <ixwebsocket/IXWebSocket.h>
-#include <ixwebsocket/IXWebSocketPerMessageDeflateOptions.h>
+#include "IXCobraConfig.h"
+
+#ifdef max
+#undef max
+#endif
 
 namespace ix
 {
+    class WebSocket;
+    struct SocketTLSOptions;
+
     enum CobraConnectionEventType
     {
         CobraConnection_EventType_Authenticated = 0,
         CobraConnection_EventType_Error = 1,
         CobraConnection_EventType_Open = 2,
-        CobraConnection_EventType_Closed = 3
+        CobraConnection_EventType_Closed = 3,
+        CobraConnection_EventType_Subscribed = 4,
+        CobraConnection_EventType_UnSubscribed = 5,
+        CobraConnection_EventType_Published = 6,
+        CobraConnection_EventType_Pong = 7,
+        CobraConnection_EventType_Handshake_Error = 8,
+        CobraConnection_EventType_Authentication_Error = 9,
+        CobraConnection_EventType_Subscription_Error = 10
     };
 
     enum CobraConnectionPublishMode
@@ -32,15 +49,21 @@ namespace ix
         CobraConnection_PublishMode_Batch = 1
     };
 
-    using SubscriptionCallback = std::function<void(const Json::Value&)>;
+    using SubscriptionCallback = std::function<void(const Json::Value&, const std::string&)>;
     using EventCallback = std::function<void(CobraConnectionEventType,
                                              const std::string&,
-                                             const WebSocketHttpHeaders&)>;
+                                             const WebSocketHttpHeaders&,
+                                             const std::string&,
+                                             uint64_t msgId)>;
+
     using TrafficTrackerCallback = std::function<void(size_t size, bool incoming)>;
+    using PublishTrackerCallback = std::function<void(bool sent, bool acked)>;
 
     class CobraConnection
     {
     public:
+        using MsgId = uint64_t;
+
         CobraConnection();
         ~CobraConnection();
 
@@ -50,13 +73,23 @@ namespace ix
                        const std::string& endpoint,
                        const std::string& rolename,
                        const std::string& rolesecret,
-                       WebSocketPerMessageDeflateOptions webSocketPerMessageDeflateOptions);
+                       const WebSocketPerMessageDeflateOptions& webSocketPerMessageDeflateOptions,
+                       const SocketTLSOptions& socketTLSOptions);
 
+        void configure(const ix::CobraConfig& config);
+
+        /// Set the traffic tracker callback
         static void setTrafficTrackerCallback(const TrafficTrackerCallback& callback);
 
         /// Reset the traffic tracker callback to an no-op one.
         static void resetTrafficTrackerCallback();
 
+        /// Set the publish tracker callback
+        static void setPublishTrackerCallback(const PublishTrackerCallback& callback);
+
+        /// Reset the publish tracker callback to an no-op one.
+        static void resetPublishTrackerCallback();
+
         /// Set the closed callback
         void setEventCallback(const EventCallback& eventCallback);
 
@@ -66,12 +99,14 @@ namespace ix
         /// Publish a message to a channel
         ///
         /// No-op if the connection is not established
-        bool publish(const Json::Value& channels,
-                     const Json::Value& msg);
+        MsgId publish(const Json::Value& channels, const Json::Value& msg);
 
         // Subscribe to a channel, and execute a callback when an incoming
         // message arrives.
-        void subscribe(const std::string& channel, SubscriptionCallback cb);
+        void subscribe(const std::string& channel,
+                       const std::string& filter = std::string(),
+                       const std::string& position = std::string(),
+                       SubscriptionCallback cb = nullptr);
 
         /// Unsubscribe from a channel
         void unsubscribe(const std::string& channel);
@@ -85,21 +120,43 @@ namespace ix
         /// Returns true only if we're connected
         bool isConnected() const;
 
+        /// Returns true only if we're authenticated
+        bool isAuthenticated() const;
+
         /// Flush the publish queue
         bool flushQueue();
 
         /// Set the publish mode
         void setPublishMode(CobraConnectionPublishMode publishMode);
 
+        /// Query the publish mode
+        CobraConnectionPublishMode getPublishMode();
+
         /// Lifecycle management. Free resources when backgrounding
         void suspend();
         void resume();
 
+        /// Prepare a message for transmission
+        /// (update the pdu, compute a msgId, serialize json to a string)
+        std::pair<CobraConnection::MsgId, std::string> prePublish(
+            const Json::Value& channels,
+            const Json::Value& msg,
+            bool addToQueue);
+
+        /// Attempt to send next message from the internal queue
+        bool publishNext();
+
+        // An invalid message id, signifying an error.
+        static constexpr MsgId kInvalidMsgId = 0;
+
     private:
         bool sendHandshakeMessage();
         bool handleHandshakeResponse(const Json::Value& data);
         bool sendAuthMessage(const std::string& nonce);
         bool handleSubscriptionData(const Json::Value& pdu);
+        bool handleSubscriptionResponse(const Json::Value& pdu);
+        bool handleUnsubscriptionResponse(const Json::Value& pdu);
+        bool handlePublishResponse(const Json::Value& pdu);
 
         void initWebSocketOnMessageCallback();
 
@@ -110,22 +167,28 @@ namespace ix
         /// Invoke the traffic tracker callback
         static void invokeTrafficTrackerCallback(size_t size, bool incoming);
 
+        /// Invoke the publish tracker callback
+        static void invokePublishTrackerCallback(bool sent, bool acked);
+
         /// Invoke event callbacks
         void invokeEventCallback(CobraConnectionEventType eventType,
                                  const std::string& errorMsg = std::string(),
-                                 const WebSocketHttpHeaders& headers = WebSocketHttpHeaders());
-        void invokeErrorCallback(const std::string& errorMsg);
+                                 const WebSocketHttpHeaders& headers = WebSocketHttpHeaders(),
+                                 const std::string& subscriptionId = std::string(),
+                                 uint64_t msgId = std::numeric_limits<uint64_t>::max());
+        void invokeErrorCallback(const std::string& errorMsg, const std::string& serializedPdu);
+
+        /// Tells whether the internal queue is empty or not
+        bool isQueueEmpty();
 
         ///
         /// Member variables
         ///
-        WebSocket _webSocket;
+        std::unique_ptr<WebSocket> _webSocket;
 
         /// Configuration data
-        std::string _appkey;
-        std::string _endpoint;
-        std::string _role_name;
-        std::string _role_secret;
+        std::string _roleName;
+        std::string _roleSecret;
         std::atomic<CobraConnectionPublishMode> _publishMode;
 
         // Can be set on control+background thread, protecting with an atomic
@@ -136,10 +199,14 @@ namespace ix
         Json::Value _pdu;
         Json::FastWriter _jsonWriter;
         mutable std::mutex _jsonWriterMutex;
+        std::mutex _prePublishMutex;
 
         /// Traffic tracker callback
         static TrafficTrackerCallback _trafficTrackerCallback;
 
+        /// Publish tracker callback
+        static PublishTrackerCallback _publishTrackerCallback;
+
         /// Cobra events callbacks
         EventCallback _eventCallback;
         mutable std::mutex _eventCallbackMutex;
@@ -158,6 +225,12 @@ namespace ix
 
         // Cap the queue size (100 elems so far -> ~100k)
         static constexpr size_t kQueueMaxSize = 256;
+
+        // Each pdu sent should have an incremental unique id
+        std::atomic<uint64_t> _id;
+
+        // Frequency at which we send a websocket ping to the backing cobra connection
+        static constexpr int kPingIntervalSecs = 30;
     };
 
 } // namespace ix

ixcobra/ixcobra/IXCobraMetricsPublisher.cpp

@@ -0,0 +1,236 @@
+/*
+ *  IXCobraMetricsPublisher.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017 Machine Zone. All rights reserved.
+ */
+
+#include "IXCobraMetricsPublisher.h"
+#include <ixwebsocket/IXSocketTLSOptions.h>
+
+#include <algorithm>
+#include <stdexcept>
+
+
+namespace ix
+{
+    const int CobraMetricsPublisher::kVersion = 1;
+    const std::string CobraMetricsPublisher::kSetRateControlId = "sms_set_rate_control_id";
+    const std::string CobraMetricsPublisher::kSetBlacklistId = "sms_set_blacklist_id";
+
+    CobraMetricsPublisher::CobraMetricsPublisher() :
+        _enabled(true)
+    {
+    }
+
+    CobraMetricsPublisher::~CobraMetricsPublisher()
+    {
+        ;
+    }
+
+    void CobraMetricsPublisher::configure(const CobraConfig& config,
+                                          const std::string& channel)
+    {
+        // Configure the satori connection and start its publish background thread
+        _cobra_metrics_theaded_publisher.configure(config, channel);
+        _cobra_metrics_theaded_publisher.start();
+    }
+
+    Json::Value& CobraMetricsPublisher::getGenericAttributes()
+    {
+        std::lock_guard<std::mutex> lock(_device_mutex);
+        return _device;
+    }
+
+    void CobraMetricsPublisher::setGenericAttributes(const std::string& attrName,
+                                                      const Json::Value& value)
+    {
+        std::lock_guard<std::mutex> lock(_device_mutex);
+        _device[attrName] = value;
+    }
+
+    void CobraMetricsPublisher::enable(bool enabled)
+    {
+        _enabled = enabled;
+    }
+
+    void CobraMetricsPublisher::setBlacklist(const std::vector<std::string>& blacklist)
+    {
+        _blacklist = blacklist;
+        std::sort(_blacklist.begin(), _blacklist.end());
+
+        // publish our blacklist
+        Json::Value data;
+        Json::Value metrics;
+        for (auto&& metric : blacklist)
+        {
+            metrics.append(metric);
+        }
+        data["blacklist"] = metrics;
+        push(kSetBlacklistId, data);
+    }
+
+    bool CobraMetricsPublisher::isMetricBlacklisted(const std::string& id) const
+    {
+        return std::binary_search(_blacklist.begin(), _blacklist.end(), id);
+    }
+
+    void CobraMetricsPublisher::setRateControl(
+        const std::unordered_map<std::string, int>& rate_control)
+    {
+        for (auto&& it : rate_control)
+        {
+            if (it.second >= 0)
+            {
+                _rate_control[it.first] = it.second;
+            }
+        }
+
+        // publish our rate_control
+        Json::Value data;
+        Json::Value metrics;
+        for (auto&& it : _rate_control)
+        {
+            metrics[it.first] = it.second;
+        }
+        data["rate_control"] = metrics;
+        push(kSetRateControlId, data);
+    }
+
+    bool CobraMetricsPublisher::isAboveMaxUpdateRate(const std::string& id) const
+    {
+        // Is this metrics rate controlled ?
+        auto rate_control_it = _rate_control.find(id);
+        if (rate_control_it == _rate_control.end()) return false;
+
+        // Was this metrics already sent ?
+        std::lock_guard<std::mutex> lock(_last_update_mutex);
+        auto last_update = _last_update.find(id);
+        if (last_update == _last_update.end()) return false;
+
+        auto timeDeltaFromLastSend =
+            std::chrono::steady_clock::now() - last_update->second;
+
+        return timeDeltaFromLastSend < std::chrono::seconds(rate_control_it->second);
+    }
+
+    void CobraMetricsPublisher::setLastUpdate(const std::string& id)
+    {
+        std::lock_guard<std::mutex> lock(_last_update_mutex);
+        _last_update[id] = std::chrono::steady_clock::now();
+    }
+
+    uint64_t CobraMetricsPublisher::getMillisecondsSinceEpoch() const
+    {
+        auto now = std::chrono::system_clock::now();
+        auto ms =
+            std::chrono::duration_cast<std::chrono::milliseconds>(
+                now.time_since_epoch()).count();
+
+        return ms;
+    }
+
+    CobraConnection::MsgId CobraMetricsPublisher::push(const std::string& id,
+                                                       const std::string& data,
+                                                       bool shouldPushTest)
+    {
+        if (!_enabled) return CobraConnection::kInvalidMsgId;
+
+        Json::Value root;
+        Json::Reader reader;
+        if (!reader.parse(data, root)) return CobraConnection::kInvalidMsgId;
+
+        return push(id, root, shouldPushTest);
+    }
+
+    CobraConnection::MsgId CobraMetricsPublisher::push(const std::string& id,
+                                                       const CobraMetricsPublisher::Message& data)
+    {
+        if (!_enabled) return CobraConnection::kInvalidMsgId;
+
+        Json::Value root;
+        for (auto it : data)
+        {
+            root[it.first] = it.second;
+        }
+
+        return push(id, root);
+    }
+
+    bool CobraMetricsPublisher::shouldPush(const std::string& id) const
+    {
+        if (!_enabled) return false;
+        if (isMetricBlacklisted(id)) return false;
+        if (isAboveMaxUpdateRate(id)) return false;
+
+        return true;
+    }
+
+    CobraConnection::MsgId CobraMetricsPublisher::push(
+        const std::string& id,
+        const Json::Value& data,
+        bool shouldPushTest)
+    {
+        if (shouldPushTest && !shouldPush(id)) return CobraConnection::kInvalidMsgId;
+
+        setLastUpdate(id);
+
+        Json::Value msg;
+        msg["id"] = id;
+        msg["data"] = data;
+        msg["session"] = _session;
+        msg["version"] = kVersion;
+        msg["timestamp"] = Json::UInt64(getMillisecondsSinceEpoch());
+
+        {
+            std::lock_guard<std::mutex> lock(_device_mutex);
+            msg["device"] = _device;
+        }
+
+        {
+            //
+            // Bump a counter for each id
+            // This is used to make sure that we are not
+            // dropping messages, by checking that all the ids is the list of
+            // all natural numbers until the last value sent (0, 1, 2, ..., N)
+            //
+            std::lock_guard<std::mutex> lock(_device_mutex);
+            auto it = _counters.emplace(id, 0);
+            msg["per_id_counter"] = it.first->second;
+            it.first->second += 1;
+        }
+
+        // Now actually enqueue the task
+        return _cobra_metrics_theaded_publisher.push(msg);
+    }
+
+    void CobraMetricsPublisher::setPublishMode(CobraConnectionPublishMode publishMode)
+    {
+        _cobra_metrics_theaded_publisher.setPublishMode(publishMode);
+    }
+
+    bool CobraMetricsPublisher::flushQueue()
+    {
+        return _cobra_metrics_theaded_publisher.flushQueue();
+    }
+
+    void CobraMetricsPublisher::suspend()
+    {
+        _cobra_metrics_theaded_publisher.suspend();
+    }
+
+    void CobraMetricsPublisher::resume()
+    {
+        _cobra_metrics_theaded_publisher.resume();
+    }
+
+    bool CobraMetricsPublisher::isConnected() const
+    {
+        return _cobra_metrics_theaded_publisher.isConnected();
+    }
+
+    bool CobraMetricsPublisher::isAuthenticated() const
+    {
+        return _cobra_metrics_theaded_publisher.isAuthenticated();
+    }
+
+} // namespace ix

ixcobra/ixcobra/IXCobraMetricsPublisher.h

@@ -0,0 +1,166 @@
+/*
+ *  IXCobraMetricsPublisher.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017 Machine Zone. All rights reserved.
+ */
+
+#pragma once
+
+#include "IXCobraMetricsThreadedPublisher.h"
+#include <atomic>
+#include <chrono>
+#include <json/json.h>
+#include <string>
+#include <unordered_map>
+
+namespace ix
+{
+    struct SocketTLSOptions;
+
+    class CobraMetricsPublisher
+    {
+    public:
+        CobraMetricsPublisher();
+        ~CobraMetricsPublisher();
+
+        /// Thread safety notes:
+        ///
+        /// 1. _enabled, _blacklist and _rate_control read/writes are not protected by a mutex
+        /// to make shouldPush as fast as possible. _enabled default to false.
+        ///
+        /// The code that set those is ran only once at init, and
+        /// the last value to be set is _enabled, which is also the first value checked in
+        /// shouldPush, so there shouldn't be any race condition.
+        ///
+        /// 2. The queue of messages is thread safe, so multiple metrics can be safely pushed on
+        /// multiple threads
+        ///
+        /// 3. Access to _last_update is protected as it needs to be read/write.
+        ///
+
+        /// Configuration / set keys, etc...
+        /// All input data but the channel name is encrypted with rc4
+        void configure(const CobraConfig& config,
+                       const std::string& channel);
+
+        /// Setter for the list of blacklisted metrics ids.
+        /// That list is sorted internally for fast lookups
+        void setBlacklist(const std::vector<std::string>& blacklist);
+
+        /// Set the maximum rate at which a metrics can be sent. Unit is seconds
+        /// if rate_control = { 'foo_id': 60 },
+        /// the foo_id metric cannot be pushed more than once every 60 seconds
+        void setRateControl(const std::unordered_map<std::string, int>& rate_control);
+
+        /// Configuration / enable/disable
+        void enable(bool enabled);
+
+        /// Simple interface, list of key value pairs where typeof(key) == typeof(value) == string
+        typedef std::unordered_map<std::string, std::string> Message;
+        CobraConnection::MsgId push(
+            const std::string& id,
+            const CobraMetricsPublisher::Message& data = CobraMetricsPublisher::Message());
+
+        /// Richer interface using json, which supports types (bool, int, float) and hierarchies of
+        /// elements
+        ///
+        /// The shouldPushTest argument should be set to false, and used in combination with the
+        /// shouldPush method for places where we want to be as lightweight as possible when
+        /// collecting metrics. When set to false, it is used so that we don't do double work when
+        /// computing whether a metrics should be sent or not.
+        CobraConnection::MsgId push(const std::string& id, const Json::Value& data, bool shouldPushTest = true);
+
+        /// Interface used by lua. msg is a json encoded string.
+        CobraConnection::MsgId push(const std::string& id, const std::string& data, bool shouldPushTest = true);
+
+        /// Tells whether a metric can be pushed.
+        /// A metric can be pushed if it satisfies those conditions:
+        ///
+        /// 1. the metrics system should be enabled
+        /// 2. the metrics shouldn't be black-listed
+        /// 3. the metrics shouldn't have reached its rate control limit at this
+        /// "sampling"/"calling" time
+        bool shouldPush(const std::string& id) const;
+
+        /// Get generic information json object
+        Json::Value& getGenericAttributes();
+
+        /// Set generic information values
+        void setGenericAttributes(const std::string& attrName, const Json::Value& value);
+
+        /// Set a unique id for the session. A uuid can be used.
+        void setSession(const std::string& session) { _session = session; }
+
+        /// Get the unique id used to identify the current session
+        const std::string& getSession() const { return _session; }
+
+        /// Return the number of milliseconds since the epoch (~1970)
+        uint64_t getMillisecondsSinceEpoch() const;
+
+        /// Set satori connection publish mode
+        void setPublishMode(CobraConnectionPublishMode publishMode);
+
+        /// Flush the publish queue
+        bool flushQueue();
+
+        /// Lifecycle management. Free resources when backgrounding
+        void suspend();
+        void resume();
+
+        /// Tells whether the socket connection is opened
+        bool isConnected() const;
+
+        /// Returns true only if we're authenticated
+        bool isAuthenticated() const;
+
+    private:
+        /// Lookup an id in our metrics to see whether it is blacklisted
+        /// Complexity is logarithmic
+        bool isMetricBlacklisted(const std::string& id) const;
+
+        /// Tells whether we should drop a metrics or not as part of an enqueuing
+        /// because it exceed the max update rate (it is sent too often)
+        bool isAboveMaxUpdateRate(const std::string& id) const;
+
+        /// Record when a metric was last sent. Used for rate control
+        void setLastUpdate(const std::string& id);
+
+        ///
+        /// Member variables
+        ///
+
+        CobraMetricsThreadedPublisher _cobra_metrics_theaded_publisher;
+
+        /// A boolean to enable or disable this system
+        /// push becomes a no-op when _enabled is false
+        std::atomic<bool> _enabled;
+
+        /// A uuid used to uniquely identify a session
+        std::string _session;
+
+        /// The _device json blob is populated once when configuring this system
+        /// It record generic metadata about the client, run (version, device model, etc...)
+        Json::Value _device;
+        mutable std::mutex _device_mutex; // protect access to _device
+
+        /// Metrics control (black list + rate control)
+        std::vector<std::string> _blacklist;
+        std::unordered_map<std::string, int> _rate_control;
+        std::unordered_map<std::string, std::chrono::time_point<std::chrono::steady_clock>>
+            _last_update;
+        mutable std::mutex _last_update_mutex; // protect access to _last_update
+
+        /// Bump a counter for each metric type
+        std::unordered_map<std::string, int> _counters;
+        mutable std::mutex _counters_mutex; // protect access to _counters
+
+        // const strings for internal ids
+        static const std::string kSetRateControlId;
+        static const std::string kSetBlacklistId;
+
+        /// Our protocol version. Can be used by subscribers who would want to be backward
+        /// compatible if we change the way we arrange data
+        static const int kVersion;
+    };
+
+} // namespace ix

ixcobra/ixcobra/IXCobraMetricsThreadedPublisher.cpp

@@ -0,0 +1,223 @@
+/*
+ *  IXCobraMetricsThreadedPublisher.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017 Machine Zone. All rights reserved.
+ */
+
+#include "IXCobraMetricsThreadedPublisher.h"
+#include <ixwebsocket/IXSetThreadName.h>
+#include <ixwebsocket/IXSocketTLSOptions.h>
+#include <ixcore/utils/IXCoreLogger.h>
+
+#include <algorithm>
+#include <stdexcept>
+#include <cmath>
+#include <cassert>
+#include <iostream>
+#include <sstream>
+
+
+namespace ix
+{
+    CobraMetricsThreadedPublisher::CobraMetricsThreadedPublisher() :
+        _stop(false)
+    {
+        _cobra_connection.setEventCallback(
+            []
+            (ix::CobraConnectionEventType eventType,
+             const std::string& errMsg,
+             const ix::WebSocketHttpHeaders& headers,
+             const std::string& subscriptionId,
+             CobraConnection::MsgId msgId)
+            {
+                std::stringstream ss;
+
+                if (eventType == ix::CobraConnection_EventType_Open)
+                {
+                    ss << "Handshake headers" << std::endl;
+
+                    for (auto it : headers)
+                    {
+                        ss << it.first << ": " << it.second << std::endl;
+                    }
+                }
+                else if (eventType == ix::CobraConnection_EventType_Authenticated)
+                {
+                    ss << "Authenticated";
+                }
+                else if (eventType == ix::CobraConnection_EventType_Error)
+                {
+                    ss << "Error: " << errMsg;
+                }
+                else if (eventType == ix::CobraConnection_EventType_Closed)
+                {
+                    ss << "Connection closed: " << errMsg;
+                }
+                else if (eventType == ix::CobraConnection_EventType_Subscribed)
+                {
+                    ss << "Subscribed through subscription id: " << subscriptionId;
+                }
+                else if (eventType == ix::CobraConnection_EventType_UnSubscribed)
+                {
+                    ss << "Unsubscribed through subscription id: " << subscriptionId;
+                }
+                else if (eventType == ix::CobraConnection_EventType_Published)
+                {
+                    ss << "Published message " << msgId << " acked";
+                }
+                else if (eventType == ix::CobraConnection_EventType_Pong)
+                {
+                    ss << "Received websocket pong";
+                }
+
+                ix::IXCoreLogger::Log(ss.str().c_str());
+        });
+    }
+
+    CobraMetricsThreadedPublisher::~CobraMetricsThreadedPublisher()
+    {
+        // The background thread won't be joinable if it was never
+        // started by calling CobraMetricsThreadedPublisher::start
+        if (!_thread.joinable()) return;
+
+        _stop = true;
+        _condition.notify_one();
+        _thread.join();
+    }
+
+    void CobraMetricsThreadedPublisher::start()
+    {
+        if (_thread.joinable()) return; // we've already been started
+
+        _thread = std::thread(&CobraMetricsThreadedPublisher::run, this);
+    }
+
+    void CobraMetricsThreadedPublisher::configure(const CobraConfig& config,
+                                                  const std::string& channel)
+    {
+        ix::IXCoreLogger::Log(config.socketTLSOptions.getDescription().c_str());
+
+        _channel = channel;
+        _cobra_connection.configure(config);
+
+    }
+
+    void CobraMetricsThreadedPublisher::pushMessage(MessageKind messageKind)
+    {
+        {
+            std::unique_lock<std::mutex> lock(_queue_mutex);
+            _queue.push(messageKind);
+        }
+
+        // wake up one thread
+        _condition.notify_one();
+    }
+
+    void CobraMetricsThreadedPublisher::setPublishMode(CobraConnectionPublishMode publishMode)
+    {
+        _cobra_connection.setPublishMode(publishMode);
+    }
+
+    bool CobraMetricsThreadedPublisher::flushQueue()
+    {
+        return _cobra_connection.flushQueue();
+    }
+
+    void CobraMetricsThreadedPublisher::run()
+    {
+        setThreadName("CobraMetricsPublisher");
+
+        _cobra_connection.connect();
+
+        while (true)
+        {
+            Json::Value msg;
+            MessageKind messageKind;
+
+            {
+                std::unique_lock<std::mutex> lock(_queue_mutex);
+
+                while (!_stop && _queue.empty())
+                {
+                    _condition.wait(lock);
+                }
+                if (_stop)
+                {
+                    _cobra_connection.disconnect();
+                    return;
+                }
+
+                messageKind = _queue.front();
+                _queue.pop();
+            }
+
+            switch (messageKind)
+            {
+                case MessageKind::Suspend:
+                {
+                    _cobra_connection.suspend();
+                    continue;
+                }; break;
+
+                case MessageKind::Resume:
+                {
+                    _cobra_connection.resume();
+                    continue;
+                }; break;
+
+                case MessageKind::Message:
+                {
+                    if (_cobra_connection.getPublishMode() == CobraConnection_PublishMode_Immediate)
+                    {
+                        _cobra_connection.publishNext();
+                    }
+                }; break;
+            }
+        }
+    }
+
+    CobraConnection::MsgId CobraMetricsThreadedPublisher::push(const Json::Value& msg)
+    {
+        static const std::string messageIdKey("id");
+
+        //
+        // Publish to multiple channels. This let the consumer side
+        // easily subscribe to all message of a certain type, without having
+        // to do manipulations on the messages on the server side.
+        //
+        Json::Value channels;
+
+        channels.append(_channel);
+        if (msg.isMember(messageIdKey))
+        {
+            channels.append(msg[messageIdKey]);
+        }
+        auto res = _cobra_connection.prePublish(channels, msg, true);
+        auto msgId = res.first;
+
+        pushMessage(MessageKind::Message);
+
+        return msgId;
+    }
+
+    void CobraMetricsThreadedPublisher::suspend()
+    {
+        pushMessage(MessageKind::Suspend);
+    }
+
+    void CobraMetricsThreadedPublisher::resume()
+    {
+        pushMessage(MessageKind::Resume);
+    }
+
+    bool CobraMetricsThreadedPublisher::isConnected() const
+    {
+        return _cobra_connection.isConnected();
+    }
+
+    bool CobraMetricsThreadedPublisher::isAuthenticated() const
+    {
+        return _cobra_connection.isAuthenticated();
+    }
+
+} // namespace ix

ixcobra/ixcobra/IXCobraMetricsThreadedPublisher.h

@@ -0,0 +1,102 @@
+/*
+ *  IXCobraMetricsThreadedPublisher.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017 Machine Zone. All rights reserved.
+ */
+
+#pragma once
+
+#include "IXCobraConnection.h"
+#include <atomic>
+#include <condition_variable>
+#include <json/json.h>
+#include <map>
+#include <mutex>
+#include <queue>
+#include <string>
+#include <thread>
+
+namespace ix
+{
+    struct SocketTLSOptions;
+
+    class CobraMetricsThreadedPublisher
+    {
+    public:
+        CobraMetricsThreadedPublisher();
+        ~CobraMetricsThreadedPublisher();
+
+        /// Configuration / set keys, etc...
+        void configure(const CobraConfig& config,
+                       const std::string& channel);
+
+        /// Start the worker thread, used for background publishing
+        void start();
+
+        /// Push a msg to our queue of messages to be published to cobra on the background
+        //  thread. Main user right now is the Cobra Metrics System
+        CobraConnection::MsgId push(const Json::Value& msg);
+
+        /// Set cobra connection publish mode
+        void setPublishMode(CobraConnectionPublishMode publishMode);
+
+        /// Flush the publish queue
+        bool flushQueue();
+
+        /// Lifecycle management. Free resources when backgrounding
+        void suspend();
+        void resume();
+
+        /// Tells whether the socket connection is opened
+        bool isConnected() const;
+
+        /// Returns true only if we're authenticated
+        bool isAuthenticated() const;
+
+    private:
+        enum class MessageKind
+        {
+            Message = 0,
+            Suspend = 1,
+            Resume = 2
+        };
+
+        /// Push a message to be processed by the background thread
+        void pushMessage(MessageKind messageKind);
+
+        /// Get a wait time which is increasing exponentially based on the number of retries
+        uint64_t getWaitTimeExp(int retry_count);
+
+        /// Debugging routine to print the connection parameters to the console
+        void printInfo();
+
+        /// Publish a message to satory
+        /// Will retry multiple times (3) if a problem occurs.
+        ///
+        /// Right now, only called on the publish worker thread.
+        void safePublish(const Json::Value& msg);
+
+        /// The worker thread "daemon" method. That method never returns unless _stop is set to true
+        void run();
+
+        /// Our connection to cobra.
+        CobraConnection _cobra_connection;
+
+        /// The channel we are publishing to
+        std::string _channel;
+
+        /// Internal data structures used to publish to cobra
+        /// Pending messages are stored into a queue, which is protected by a mutex
+        /// We used a condition variable to prevent the worker thread from busy polling
+        /// So we notify the condition variable when an incoming message arrives to signal
+        /// that it should wake up and take care of publishing it to cobra
+        /// To shutdown the worker thread one has to set the _stop boolean to true.
+        /// This is done in the destructor
+        std::queue<MessageKind> _queue;
+        mutable std::mutex _queue_mutex;
+        std::condition_variable _condition;
+        std::atomic<bool> _stop;
+        std::thread _thread;
+    };
+
+} // namespace ix

ixcobra/ixcobra/README.md

@@ -0,0 +1 @@
+Client code to publish to a real time analytic system, described in [https://bsergean.github.io/redis_conf_2019/slides.html#1](link).

ixcore/CMakeLists.txt

@@ -0,0 +1,19 @@
+#
+# Author: Benjamin Sergeant
+# Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+#
+
+set (IXCORE_SOURCES
+    ixcore/utils/IXCoreLogger.cpp
+)
+
+set (IXCORE_HEADERS
+    ixcore/utils/IXCoreLogger.h
+)
+
+add_library(ixcore STATIC
+    ${IXCORE_SOURCES}
+    ${IXCORE_HEADERS}
+)
+
+target_include_directories( ixcore PUBLIC . )

ixcore/ixcore/utils/IXCoreLogger.cpp

@@ -0,0 +1,14 @@
+#include "ixcore/utils/IXCoreLogger.h"
+
+
+namespace ix
+{
+// Default do nothing logger
+IXCoreLogger::LogFunc IXCoreLogger::_currentLogger = [](const char* /*msg*/){};
+
+void IXCoreLogger::Log(const char* msg)
+{
+    _currentLogger(msg);
+}
+
+} // ix

ixcore/ixcore/utils/IXCoreLogger.h

@@ -0,0 +1,18 @@
+#pragma once
+#include <functional>
+
+namespace ix
+{
+    class IXCoreLogger
+    {
+    public:
+        using LogFunc = std::function<void(const char*)>;
+        static void Log(const char* msg);
+
+        static void setLogFunction(LogFunc& func) { _currentLogger = func; }
+
+    private:
+        static LogFunc _currentLogger;
+    };
+
+} // namespace ix

ixcrypto/CMakeLists.txt

@@ -0,0 +1,49 @@
+#
+# Author: Benjamin Sergeant
+# Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+#
+set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../CMake;${CMAKE_MODULE_PATH}")
+
+set (IXCRYPTO_SOURCES
+    ixcrypto/IXHMac.cpp
+    ixcrypto/IXBase64.cpp
+    ixcrypto/IXUuid.cpp
+    ixcrypto/IXHash.cpp
+)
+
+set (IXCRYPTO_HEADERS
+    ixcrypto/IXHMac.h
+    ixcrypto/IXBase64.h
+    ixcrypto/IXUuid.h
+    ixcrypto/IXHash.h
+)
+
+add_library(ixcrypto STATIC
+    ${IXCRYPTO_SOURCES}
+    ${IXCRYPTO_HEADERS}
+)
+
+set(IXCRYPTO_INCLUDE_DIRS
+    .
+    ../ixcore)
+
+target_include_directories( ixcrypto PUBLIC ${IXCRYPTO_INCLUDE_DIRS} )
+
+# hmac computation needs a crypto library
+
+target_compile_definitions(ixcrypto PUBLIC IXCRYPTO_USE_TLS)
+if (USE_MBED_TLS)
+    find_package(MbedTLS REQUIRED)
+    target_include_directories(ixcrypto PUBLIC ${MBEDTLS_INCLUDE_DIRS})
+    target_link_libraries(ixcrypto ${MBEDTLS_LIBRARIES})
+    target_compile_definitions(ixcrypto PUBLIC IXCRYPTO_USE_MBED_TLS)
+elseif (APPLE)
+elseif (WIN32)
+else()
+    find_package(OpenSSL REQUIRED)
+    add_definitions(${OPENSSL_DEFINITIONS})
+    message(STATUS "OpenSSL: " ${OPENSSL_VERSION})
+    include_directories(${OPENSSL_INCLUDE_DIR})
+    target_link_libraries(ixcrypto ${OPENSSL_LIBRARIES})
+    target_compile_definitions(ixcrypto PUBLIC IXCRYPTO_USE_OPEN_SSL)
+endif()

ixcrypto/ixcrypto/IXBase64.cpp

@@ -35,15 +35,21 @@ namespace ix
     "0123456789+/";
 
     std::string base64_encode(const std::string& data, size_t len)
+    {
+        const char* bytes_to_encode = data.c_str();
+        return base64_encode(bytes_to_encode, len);
+    }
+
+    std::string base64_encode(const char* bytes_to_encode, size_t len)
     {
         std::string ret;
+        ret.reserve(((len + 2) / 3) * 4);
+
         int i = 0;
         int j = 0;
         unsigned char char_array_3[3];
         unsigned char char_array_4[4];
 
-        const char* bytes_to_encode = data.c_str();
-
         while(len--)
         {
             char_array_3[i++] = *(bytes_to_encode++);
@@ -95,6 +101,7 @@ namespace ix
         int in_ = 0;
         unsigned char char_array_4[4], char_array_3[3];
         std::string ret;
+        ret.reserve(((in_len + 3) / 4) * 3);
 
         while(in_len-- && ( encoded_string[in_] != '=') && is_base64(encoded_string[in_]))
         {

ixcrypto/ixcrypto/IXBase64.h

@@ -11,5 +11,6 @@
 namespace ix
 {
     std::string base64_encode(const std::string& data, size_t len);
+    std::string base64_encode(const char* data, size_t len);
     std::string base64_decode(const std::string& encoded_string);
-}
+} // namespace ix

ixcrypto/ixcrypto/IXHMac.cpp

@@ -0,0 +1,50 @@
+/*
+ *  IXHMac.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2018 Machine Zone. All rights reserved.
+ */
+
+#include "IXHMac.h"
+#include "IXBase64.h"
+
+#if defined(IXCRYPTO_USE_MBED_TLS)
+# include <mbedtls/md.h>
+#elif defined(__APPLE__)
+# include <CommonCrypto/CommonHMAC.h>
+#elif defined(IXCRYPTO_USE_OPEN_SSL)
+# include <openssl/hmac.h>
+#else
+# include <assert.h>
+#endif
+
+namespace ix
+{
+    std::string hmac(const std::string& data, const std::string& key)
+    {
+        constexpr size_t hashSize = 16;
+        unsigned char hash[hashSize];
+
+#if defined(IXCRYPTO_USE_MBED_TLS)
+        mbedtls_md_hmac(mbedtls_md_info_from_type(MBEDTLS_MD_MD5),
+               (unsigned char *) key.c_str(), key.size(),
+               (unsigned char *) data.c_str(), data.size(),
+               (unsigned char *) &hash);
+#elif defined(__APPLE__)
+        CCHmac(kCCHmacAlgMD5,
+               key.c_str(), key.size(),
+               data.c_str(), data.size(),
+               &hash);
+#elif defined(IXCRYPTO_USE_OPEN_SSL)
+        HMAC(EVP_md5(),
+             key.c_str(), (int) key.size(),
+             (unsigned char *) data.c_str(), (int) data.size(),
+             (unsigned char *) hash, nullptr);
+#else
+        assert(false && "hmac not implemented on this platform");
+#endif
+
+        std::string hashString(reinterpret_cast<char*>(hash), hashSize);
+
+        return base64_encode(hashString, (uint32_t) hashString.size());
+    }
+}

ixcrypto/ixcrypto/IXHash.h

@@ -13,4 +13,3 @@ namespace ix
 {
     uint64_t djb2Hash(const std::vector<uint8_t>& data);
 }
-

ixcrypto/ixcrypto/IXUuid.h

@@ -9,9 +9,9 @@
 
 namespace ix
 {
-   /**
-    * Generate a random uuid
-    */
-   std::string uuid4();
+    /**
+     * Generate a random uuid
+     */
+    std::string uuid4();
 
-}
+} // namespace ix

ixsentry/CMakeLists.txt

@@ -0,0 +1,30 @@
+#
+# Author: Benjamin Sergeant
+# Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+#
+
+set (IXSENTRY_SOURCES
+    ixsentry/IXSentryClient.cpp
+)
+
+set (IXSENTRY_HEADERS
+    ixsentry/IXSentryClient.h
+)
+
+add_library(ixsentry STATIC
+  ${IXSENTRY_SOURCES}
+  ${IXSENTRY_HEADERS}
+)
+
+find_package(JsonCpp)
+if (NOT JSONCPP_FOUND)
+  set(JSONCPP_INCLUDE_DIRS ../third_party/jsoncpp)
+endif()
+
+set(IXSENTRY_INCLUDE_DIRS
+    .
+    ..
+    ../ixcore
+    ${JSONCPP_INCLUDE_DIRS})
+
+target_include_directories( ixsentry PUBLIC ${IXSENTRY_INCLUDE_DIRS} )

ixsentry/ixsentry/IXSentryClient.cpp

@@ -0,0 +1,289 @@
+/*
+ *  IXSentryClient.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone. All rights reserved.
+ */
+
+#include "IXSentryClient.h"
+
+#include <chrono>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <ixwebsocket/IXWebSocketHttpHeaders.h>
+#include <ixwebsocket/IXWebSocketVersion.h>
+#include <ixcore/utils/IXCoreLogger.h>
+
+
+namespace ix
+{
+    SentryClient::SentryClient(const std::string& dsn)
+        : _dsn(dsn)
+        , _validDsn(false)
+        , _luaFrameRegex("\t([^/]+):([0-9]+): in function ['<]([^/]+)['>]")
+        , _httpClient(std::make_shared<HttpClient>(true))
+    {
+        const std::regex dsnRegex("(http[s]?)://([^:]+):([^@]+)@([^/]+)/([0-9]+)");
+        std::smatch group;
+
+        if (std::regex_match(dsn, group, dsnRegex) && group.size() == 6)
+        {
+            _validDsn = true;
+
+            const auto scheme = group.str(1);
+            const auto host = group.str(4);
+            const auto project_id = group.str(5);
+            _url = scheme + "://" + host + "/api/" + project_id + "/store/";
+
+            _publicKey = group.str(2);
+            _secretKey = group.str(3);
+        }
+    }
+
+    void SentryClient::setTLSOptions(const SocketTLSOptions& tlsOptions)
+    {
+        _httpClient->setTLSOptions(tlsOptions);
+    }
+
+    int64_t SentryClient::getTimestamp()
+    {
+        const auto tp = std::chrono::system_clock::now();
+        const auto dur = tp.time_since_epoch();
+        return std::chrono::duration_cast<std::chrono::seconds>(dur).count();
+    }
+
+    std::string SentryClient::getIso8601()
+    {
+        std::time_t now;
+        std::time(&now);
+        char buf[sizeof("2011-10-08T07:07:09Z")];
+        std::strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%SZ", std::gmtime(&now));
+        return buf;
+    }
+
+    std::string SentryClient::computeAuthHeader()
+    {
+        std::string securityHeader("Sentry sentry_version=5");
+        securityHeader += ",sentry_client=ws/1.0.0";
+        securityHeader += ",sentry_timestamp=" + std::to_string(SentryClient::getTimestamp());
+        securityHeader += ",sentry_key=" + _publicKey;
+        securityHeader += ",sentry_secret=" + _secretKey;
+
+        return securityHeader;
+    }
+
+    Json::Value SentryClient::parseLuaStackTrace(const std::string& stack)
+    {
+        Json::Value frames;
+
+        // Split by lines
+        std::string line;
+        std::stringstream tokenStream(stack);
+
+        std::smatch group;
+
+        while (std::getline(tokenStream, line))
+        {
+            //	MapScene.lua:2169: in function 'singleCB'
+            if (std::regex_match(line, group, _luaFrameRegex))
+            {
+                const auto fileName = group.str(1);
+                const auto linenoStr = group.str(2);
+                const auto function = group.str(3);
+
+                std::stringstream ss;
+                ss << linenoStr;
+                uint64_t lineno;
+                ss >> lineno;
+
+                Json::Value frame;
+                frame["lineno"] = Json::UInt64(lineno);
+                frame["filename"] = fileName;
+                frame["function"] = function;
+
+                frames.append(frame);
+            }
+        }
+
+        std::reverse(frames.begin(), frames.end());
+
+        return frames;
+    }
+
+    std::string parseExceptionName(const std::string& stack)
+    {
+        // Split by lines
+        std::string line;
+        std::stringstream tokenStream(stack);
+
+        // Extract the first line
+        std::getline(tokenStream, line);
+
+        return line;
+    }
+
+    std::string SentryClient::computePayload(const Json::Value& msg)
+    {
+        Json::Value payload;
+
+        //
+        // "tags": [
+        //   [
+        //     "a",
+        //     "b"
+        //   ],
+        //  ]
+        //
+        Json::Value tags(Json::arrayValue);
+
+        payload["platform"] = "python";
+        payload["sdk"]["name"] = "ws";
+        payload["sdk"]["version"] = IX_WEBSOCKET_VERSION;
+        payload["timestamp"] = SentryClient::getIso8601();
+
+        bool isNoisyTypes = msg["id"].asString() == "game_noisytypes_id";
+
+        std::string stackTraceFieldName = isNoisyTypes ? "traceback" : "stack";
+        std::string stack;
+        std::string message;
+
+        if (isNoisyTypes)
+        {
+            stack = msg["data"][stackTraceFieldName].asString();
+            message = parseExceptionName(stack);
+        }
+        else // logging
+        {
+            if (msg["data"].isMember("info"))
+            {
+                stack = msg["data"]["info"][stackTraceFieldName].asString();
+                message = msg["data"]["info"]["message"].asString();
+
+                if (msg["data"].isMember("tags"))
+                {
+                    auto members = msg["data"]["tags"].getMemberNames();
+
+                    for (auto member : members)
+                    {
+                        Json::Value tag;
+                        tag.append(member);
+                        tag.append(msg["data"]["tags"][member]);
+                        tags.append(tag);
+                    }
+                }
+
+                if (msg["data"]["info"].isMember("level_str"))
+                {
+                    // https://docs.sentry.io/enriching-error-data/context/?platform=python#setting-the-level
+                    std::string level = msg["data"]["info"]["level_str"].asString();
+                    if (level == "critical")
+                    {
+                        level = "fatal";
+                    }
+                    payload["level"] = level;
+                }
+            }
+            else
+            {
+                stack = msg["data"][stackTraceFieldName].asString();
+                message = msg["data"]["message"].asString();
+            }
+        }
+
+        Json::Value exception;
+        exception["stacktrace"]["frames"] = parseLuaStackTrace(stack);
+        exception["value"] = message;
+
+        payload["exception"].append(exception);
+
+        Json::Value extra;
+        extra["cobra_event"] = msg;
+
+        // Builtin tags
+        Json::Value gameTag;
+        gameTag.append("game");
+        gameTag.append(msg["device"]["game"]);
+        tags.append(gameTag);
+
+        Json::Value userIdTag;
+        userIdTag.append("userid");
+        userIdTag.append(msg["device"]["user_id"]);
+        tags.append(userIdTag);
+
+        Json::Value environmentTag;
+        environmentTag.append("environment");
+        environmentTag.append(msg["device"]["environment"]);
+        tags.append(environmentTag);
+
+        Json::Value clientVersionTag;
+        clientVersionTag.append("client_version");
+        clientVersionTag.append(msg["device"]["app_version"]);
+        tags.append(clientVersionTag);
+
+        payload["tags"] = tags;
+
+        return _jsonWriter.write(payload);
+    }
+
+    std::pair<HttpResponsePtr, std::string> SentryClient::send(const Json::Value& msg, bool verbose)
+    {
+        auto args = _httpClient->createRequest();
+        args->extraHeaders["X-Sentry-Auth"] = SentryClient::computeAuthHeader();
+        args->connectTimeout = 60;
+        args->transferTimeout = 5 * 60;
+        args->followRedirects = true;
+        args->verbose = verbose;
+        args->logger = [](const std::string& msg) { ix::IXCoreLogger::Log(msg.c_str()); };
+
+        std::string body = computePayload(msg);
+        HttpResponsePtr response = _httpClient->post(_url, body, args);
+
+        return std::make_pair(response, body);
+    }
+
+    // https://sentry.io/api/12345/minidump?sentry_key=abcdefgh");
+    std::string SentryClient::computeUrl(const std::string& project, const std::string& key)
+    {
+        std::stringstream ss;
+        ss << "https://sentry.io/api/"
+           << project
+           << "/minidump?sentry_key="
+           << key;
+
+        return ss.str();
+    }
+
+    //
+    // curl -v -X POST -F upload_file_minidump=@ws/crash.dmp 'https://sentry.io/api/123456/minidump?sentry_key=12344567890'
+    //
+    void SentryClient::uploadMinidump(
+        const std::string& sentryMetadata,
+        const std::string& minidumpBytes,
+        const std::string& project,
+        const std::string& key,
+        bool verbose,
+        const OnResponseCallback& onResponseCallback)
+    {
+        std::string multipartBoundary = _httpClient->generateMultipartBoundary();
+
+        auto args = _httpClient->createRequest();
+        args->verb = HttpClient::kPost;
+        args->connectTimeout = 60;
+        args->transferTimeout = 5 * 60;
+        args->followRedirects = true;
+        args->verbose = verbose;
+        args->multipartBoundary = multipartBoundary;
+        args->logger = [](const std::string& msg) { ix::IXCoreLogger::Log(msg.c_str()); };
+
+        HttpFormDataParameters httpFormDataParameters;
+        httpFormDataParameters["upload_file_minidump"] = minidumpBytes;
+
+        HttpParameters httpParameters;
+        httpParameters["sentry"] = sentryMetadata;
+
+        args->url = computeUrl(project, key);
+        args->body = _httpClient->serializeHttpFormDataParameters(multipartBoundary, httpFormDataParameters, httpParameters);
+
+        _httpClient->performRequest(args, onResponseCallback);
+    }
+} // namespace ix

ixsentry/ixsentry/IXSentryClient.h

@@ -0,0 +1,64 @@
+/*
+ *  IXSentryClient.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone. All rights reserved.
+ */
+
+#pragma once
+
+#include <algorithm>
+#include <ixwebsocket/IXHttpClient.h>
+#include <ixwebsocket/IXSocketTLSOptions.h>
+#include <json/json.h>
+#include <regex>
+#include <memory>
+
+namespace ix
+{
+    class SentryClient
+    {
+    public:
+        SentryClient(const std::string& dsn);
+        ~SentryClient() = default;
+
+        std::pair<HttpResponsePtr, std::string> send(const Json::Value& msg, bool verbose);
+
+        Json::Value parseLuaStackTrace(const std::string& stack);
+
+        // Mostly for testing
+        void setTLSOptions(const SocketTLSOptions& tlsOptions);
+
+        void uploadMinidump(
+            const std::string& sentryMetadata,
+            const std::string& minidumpBytes,
+            const std::string& project,
+            const std::string& key,
+            bool verbose,
+            const OnResponseCallback& onResponseCallback);
+
+    private:
+        int64_t getTimestamp();
+        std::string computeAuthHeader();
+        std::string getIso8601();
+        std::string computePayload(const Json::Value& msg);
+
+        std::string computeUrl(const std::string& project, const std::string& key);
+
+        void displayReponse(HttpResponsePtr response);
+
+        std::string _dsn;
+        bool _validDsn;
+        std::string _url;
+
+        // Used for authentication with a header
+        std::string _publicKey;
+        std::string _secretKey;
+
+        Json::FastWriter _jsonWriter;
+
+        std::regex _luaFrameRegex;
+
+        std::shared_ptr<HttpClient> _httpClient;
+    };
+
+} // namespace ix

ixsnake/CMakeLists.txt

@@ -0,0 +1,35 @@
+#
+# Author: Benjamin Sergeant
+# Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+#
+
+set (IXSNAKE_SOURCES
+    ixsnake/IXSnakeServer.cpp
+    ixsnake/IXSnakeProtocol.cpp
+    ixsnake/IXAppConfig.cpp
+    ixsnake/IXRedisClient.cpp
+    ixsnake/IXRedisServer.cpp
+)
+
+set (IXSNAKE_HEADERS
+    ixsnake/IXSnakeServer.h
+    ixsnake/IXSnakeProtocol.h
+    ixsnake/IXAppConfig.h
+    ixsnake/IXRedisClient.h
+    ixsnake/IXRedisServer.h
+)
+
+add_library(ixsnake STATIC
+    ${IXSNAKE_SOURCES}
+    ${IXSNAKE_HEADERS}
+)
+
+set(IXSNAKE_INCLUDE_DIRS
+    .
+    ..
+    ../ixcore
+    ../ixcrypto
+    ../ixwebsocket
+    ../third_party)
+
+target_include_directories( ixsnake PUBLIC ${IXSNAKE_INCLUDE_DIRS} )

ixsnake/ixsnake/IXAppConfig.cpp

@@ -0,0 +1,48 @@
+/*
+ *  IXSnakeProtocol.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXAppConfig.h"
+
+#include "IXSnakeProtocol.h"
+#include <iostream>
+#include <ixcrypto/IXUuid.h>
+
+namespace snake
+{
+    bool isAppKeyValid(const AppConfig& appConfig, std::string appkey)
+    {
+        return appConfig.apps.count(appkey) != 0;
+    }
+
+    std::string getRoleSecret(const AppConfig& appConfig, std::string appkey, std::string role)
+    {
+        if (!isAppKeyValid(appConfig, appkey))
+        {
+            std::cerr << "Missing appkey " << appkey << std::endl;
+            return std::string();
+        }
+
+        auto roles = appConfig.apps[appkey]["roles"];
+        auto channel = roles[role]["secret"];
+        return channel;
+    }
+
+    std::string generateNonce()
+    {
+        return ix::uuid4();
+    }
+
+    void dumpConfig(const AppConfig& appConfig)
+    {
+        for (auto&& host : appConfig.redisHosts)
+        {
+            std::cout << "redis host: " << host << std::endl;
+        }
+
+        std::cout << "redis password: " << appConfig.redisPassword << std::endl;
+        std::cout << "redis port: " << appConfig.redisPort << std::endl;
+    }
+} // namespace snake

ixsnake/ixsnake/IXAppConfig.h

@@ -0,0 +1,45 @@
+/*
+ *  IXAppConfig.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include <nlohmann/json.hpp>
+#include <string>
+#include <vector>
+#include <ixwebsocket/IXSocketTLSOptions.h>
+
+namespace snake
+{
+    struct AppConfig
+    {
+        // Server
+        std::string hostname;
+        int port;
+
+        // Redis
+        std::vector<std::string> redisHosts;
+        int redisPort;
+        std::string redisPassword;
+
+        // AppKeys
+        nlohmann::json apps;
+
+        // TLS options
+        ix::SocketTLSOptions socketTLSOptions;
+
+        // Misc
+        bool verbose;
+        bool disablePong;
+    };
+
+    bool isAppKeyValid(const AppConfig& appConfig, std::string appkey);
+
+    std::string getRoleSecret(const AppConfig& appConfig, std::string appkey, std::string role);
+
+    std::string generateNonce();
+
+    void dumpConfig(const AppConfig& appConfig);
+} // namespace snake

ixsnake/ixsnake/IXRedisClient.cpp

@@ -5,54 +5,45 @@
  */
 
 #include "IXRedisClient.h"
-#include <ixwebsocket/IXSocketFactory.h>
-#include <ixwebsocket/IXSocket.h>
-#include <cpp_redis/cpp_redis>
 
-#include <sstream>
-#include <iomanip>
-#include <vector>
 #include <cstring>
+#include <iomanip>
+#include <iostream>
+#include <ixwebsocket/IXSocketFactory.h>
+#include <ixwebsocket/IXSocketTLSOptions.h>
+#include <sstream>
+#include <vector>
 
 namespace ix
 {
     bool RedisClient::connect(const std::string& hostname, int port)
     {
-         _sub.connect(hostname, port, []
-                 (const std::string& host, std::size_t port, cpp_redis::connect_state status) {
-            if (status == cpp_redis::connect_state::dropped) {
-              std::cout << "client disconnected from " << host << ":" << port << std::endl;
-            }
-          });
-
-         // also subscribe the old way
         bool tls = false;
         std::string errorMsg;
-        _socket = createSocket(tls, errorMsg);
+        SocketTLSOptions tlsOptions;
+        _socket = createSocket(tls, -1, errorMsg, tlsOptions);
 
         if (!_socket)
         {
             return false;
         }
 
+        CancellationRequest cancellationRequest = []() -> bool
+        {
+            return false;
+        };
+
         std::string errMsg;
-        return _socket->connect(hostname, port, errMsg, nullptr);
-        
+        return _socket->connect(hostname, port, errMsg, cancellationRequest);
     }
 
-    bool RedisClient::auth(const std::string& password,
-                           std::string& response)
+    void RedisClient::stop()
     {
-        // authentication if server-server requires it
-        //  _sub.auth(password, [&response](const cpp_redis::reply& reply) {
-        //    if (reply.is_error()) { std::cerr << "Authentication failed: " << reply.as_string() << std::endl; }
-        //    else {
-        //      std::cout << "successful authentication" << std::endl;
-        //    }
-        //  });
+        _stop = true;
+    }
 
-        return true;
-#if 0
+    bool RedisClient::auth(const std::string& password, std::string& response)
+    {
         response.clear();
 
         if (!_socket) return false;
@@ -80,31 +71,49 @@ namespace ix
 
         response = line;
         return lineValid;
-#endif
     }
 
+    std::string RedisClient::writeString(const std::string& str)
+    {
+        std::stringstream ss;
+        ss << "$";
+        ss << str.size();
+        ss << "\r\n";
+        ss << str;
+        ss << "\r\n";
+
+        return ss.str();
+    }
 
     bool RedisClient::publish(const std::string& channel,
-                              const std::string& message)
+                              const std::string& message,
+                              std::string& errMsg)
     {
-        if (!_socket) return false;
+        errMsg.clear();
+
+        if (!_socket)
+        {
+            errMsg = "socket is not initialized";
+            return false;
+        }
 
         std::stringstream ss;
-        ss << "PUBLISH ";
-        ss << channel;
-        ss << " ";
-        ss << message;
-        ss << "\r\n";
+        ss << "*3\r\n";
+        ss << writeString("PUBLISH");
+        ss << writeString(channel);
+        ss << writeString(message);
 
         bool sent = _socket->writeBytes(ss.str(), nullptr);
         if (!sent)
         {
+            errMsg = "Cannot write bytes to socket";
             return false;
         }
 
         auto pollResult = _socket->isReadyToRead(-1);
         if (pollResult == PollResultType::Error)
         {
+            errMsg = "Error while polling for result";
             return false;
         }
 
@@ -112,6 +121,13 @@ namespace ix
         auto lineValid = lineResult.first;
         auto line = lineResult.second;
 
+        // A successful response starts with a :
+        if (line.empty() || line[0] != ':')
+        {
+            errMsg = line;
+            return false;
+        }
+
         return lineValid;
     }
 
@@ -122,25 +138,14 @@ namespace ix
                                 const OnRedisSubscribeResponseCallback& responseCallback,
                                 const OnRedisSubscribeCallback& callback)
     {
-        _sub.subscribe(channel, [&callback](const std::string& chan, const std::string& msg) {
-            callback(msg);
-        });
-        _sub.commit();
+        _stop = false;
 
-        while (true)
-        {
-            auto duration = std::chrono::seconds(1);
-            std::this_thread::sleep_for(duration);
-        }
-
-        return true;
-#if 0
         if (!_socket) return false;
 
         std::stringstream ss;
-        ss << "SUBSCRIBE ";
-        ss << channel;
-        ss << "\r\n";
+        ss << "*2\r\n";
+        ss << writeString("SUBSCRIBE");
+        ss << writeString(channel);
 
         bool sent = _socket->writeBytes(ss.str(), nullptr);
         if (!sent)
@@ -166,7 +171,7 @@ namespace ix
 
         if (!lineValid) return false;
 
-        // There are 5 items for the subscribe repply
+        // There are 5 items for the subscribe reply
         for (int i = 0; i < 5; ++i)
         {
             auto lineResult = _socket->readLine(nullptr);
@@ -182,13 +187,21 @@ namespace ix
         // Wait indefinitely for new messages
         while (true)
         {
+            if (_stop) break;
+
             // Wait until something is ready to read
-            auto pollResult = _socket->isReadyToRead(-1);
+            int timeoutMs = 10;
+            auto pollResult = _socket->isReadyToRead(timeoutMs);
             if (pollResult == PollResultType::Error)
             {
                 return false;
             }
 
+            if (pollResult == PollResultType::Timeout)
+            {
+                continue;
+            }
+
             // The first line of the response describe the return type,
             // => *3 (an array of 3 elements)
             auto lineResult = _socket->readLine(nullptr);
@@ -200,7 +213,7 @@ namespace ix
             int arraySize;
             {
                 std::stringstream ss;
-                ss << line.substr(1, line.size()-1);
+                ss << line.substr(1, line.size() - 1);
                 ss >> arraySize;
             }
 
@@ -217,7 +230,7 @@ namespace ix
                 // => $7 (7 bytes)
                 int stringSize;
                 std::stringstream ss;
-                ss << line.substr(1, line.size()-1);
+                ss << line.substr(1, line.size() - 1);
                 ss >> stringSize;
 
                 auto readResult = _socket->readBytes(stringSize, nullptr, nullptr);
@@ -237,6 +250,104 @@ namespace ix
         }
 
         return true;
-#endif
     }
-}
+
+    std::string RedisClient::prepareXaddCommand(
+        const std::string& stream,
+        const std::string& message)
+    {
+        std::stringstream ss;
+        ss << "*5\r\n";
+        ss << writeString("XADD");
+        ss << writeString(stream);
+        ss << writeString("*");
+        ss << writeString("field");
+        ss << writeString(message);
+
+        return ss.str();
+    }
+
+    std::string RedisClient::xadd(const std::string& stream,
+                                  const std::string& message,
+                                  std::string& errMsg)
+    {
+        errMsg.clear();
+
+        if (!_socket)
+        {
+            errMsg = "socket is not initialized";
+            return std::string();
+        }
+
+        std::string command = prepareXaddCommand(stream, message);
+
+        bool sent = _socket->writeBytes(command, nullptr);
+        if (!sent)
+        {
+            errMsg = "Cannot write bytes to socket";
+            return std::string();
+        }
+
+        return readXaddReply(errMsg);
+    }
+
+    std::string RedisClient::readXaddReply(std::string& errMsg)
+    {
+        // Read result
+        auto pollResult = _socket->isReadyToRead(-1);
+        if (pollResult == PollResultType::Error)
+        {
+            errMsg = "Error while polling for result";
+            return std::string();
+        }
+
+        // First line is the string length
+        auto lineResult = _socket->readLine(nullptr);
+        auto lineValid = lineResult.first;
+        auto line = lineResult.second;
+
+        if (!lineValid)
+        {
+            errMsg = "Error while polling for result";
+            return std::string();
+        }
+
+        int stringSize;
+        {
+            std::stringstream ss;
+            ss << line.substr(1, line.size() - 1);
+            ss >> stringSize;
+        }
+
+        // Read the result, which is the stream id computed by the redis server
+        lineResult = _socket->readLine(nullptr);
+        lineValid = lineResult.first;
+        line = lineResult.second;
+
+        std::string streamId = line.substr(0, stringSize - 1);
+        return streamId;
+    }
+
+    bool RedisClient::sendCommand(const std::string& commands, int commandsCount, std::string& errMsg)
+    {
+        bool sent = _socket->writeBytes(commands, nullptr);
+        if (!sent)
+        {
+            errMsg = "Cannot write bytes to socket";
+            return false;
+        }
+
+        bool success = true;
+
+        for (int i = 0; i < commandsCount; ++i)
+        {
+            auto reply = readXaddReply(errMsg);
+            if (reply == std::string())
+            {
+                success = false;
+            }
+        }
+
+        return success;
+    }
+} // namespace ix

ixsnake/ixsnake/IXRedisClient.h

@@ -0,0 +1,63 @@
+/*
+ *  IXRedisClient.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include <atomic>
+#include <functional>
+#include <memory>
+#include <string>
+
+#include <ixwebsocket/IXSocket.h>
+
+namespace ix
+{
+    class RedisClient
+    {
+    public:
+        using OnRedisSubscribeResponseCallback = std::function<void(const std::string&)>;
+        using OnRedisSubscribeCallback = std::function<void(const std::string&)>;
+
+        RedisClient()
+            : _stop(false)
+        {
+        }
+        ~RedisClient() = default;
+
+        bool connect(const std::string& hostname, int port);
+
+        bool auth(const std::string& password, std::string& response);
+
+        // Publish / Subscribe
+        bool publish(const std::string& channel, const std::string& message, std::string& errMsg);
+
+        bool subscribe(const std::string& channel,
+                       const OnRedisSubscribeResponseCallback& responseCallback,
+                       const OnRedisSubscribeCallback& callback);
+
+        // XADD
+        std::string xadd(
+            const std::string& channel,
+            const std::string& message,
+            std::string& errMsg);
+
+        std::string prepareXaddCommand(
+            const std::string& stream,
+            const std::string& message);
+
+        std::string readXaddReply(std::string& errMsg);
+
+        bool sendCommand(const std::string& commands, int commandsCount, std::string& errMsg);
+
+        void stop();
+
+    private:
+        std::string writeString(const std::string& str);
+
+        std::unique_ptr<Socket> _socket;
+        std::atomic<bool> _stop;
+    };
+} // namespace ix

ixsnake/ixsnake/IXRedisServer.cpp

@@ -0,0 +1,292 @@
+/*
+ *  IXRedisServer.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXRedisServer.h"
+
+#include <ixwebsocket/IXNetSystem.h>
+#include <ixwebsocket/IXSocketConnect.h>
+#include <ixwebsocket/IXSocket.h>
+#include <ixwebsocket/IXCancellationRequest.h>
+#include <fstream>
+#include <sstream>
+#include <vector>
+
+namespace ix
+{
+    RedisServer::RedisServer(int port, const std::string& host, int backlog, size_t maxConnections, int addressFamily)
+        : SocketServer(port, host, backlog, maxConnections, addressFamily)
+        , _connectedClientsCount(0)
+        , _stopHandlingConnections(false)
+    {
+        ;
+    }
+
+    RedisServer::~RedisServer()
+    {
+        stop();
+    }
+
+    void RedisServer::stop()
+    {
+        stopAcceptingConnections();
+
+        _stopHandlingConnections = true;
+        while (_connectedClientsCount != 0)
+        {
+            std::this_thread::sleep_for(std::chrono::milliseconds(10));
+        }
+        _stopHandlingConnections = false;
+
+        SocketServer::stop();
+    }
+
+    void RedisServer::handleConnection(std::unique_ptr<Socket> socket,
+                                       std::shared_ptr<ConnectionState> connectionState)
+    {
+        _connectedClientsCount++;
+
+        while (!_stopHandlingConnections)
+        {
+            std::vector<std::string> tokens;
+            if (!parseRequest(socket, tokens))
+            {
+                if (_stopHandlingConnections)
+                {
+                    logError("Cancellation requested");
+                }
+                else
+                {
+                    logError("Error parsing request");
+                }
+                break;
+            }
+
+            bool success = false;
+
+            // publish
+            if (tokens[0] == "COMMAND")
+            {
+                success = handleCommand(socket, tokens);
+            }
+            else if (tokens[0] == "PUBLISH")
+            {
+                success = handlePublish(socket, tokens);
+            }
+            else if (tokens[0] == "SUBSCRIBE")
+            {
+                success = handleSubscribe(socket, tokens);
+            }
+
+            if (!success)
+            {
+                if (_stopHandlingConnections)
+                {
+                    logError("Cancellation requested");
+                }
+                else
+                {
+                    logError("Error processing request for command: " + tokens[0]);
+                }
+                break;
+            }
+        }
+
+        cleanupSubscribers(socket);
+
+        logInfo("Connection closed for connection id " + connectionState->getId());
+        connectionState->setTerminated();
+
+        _connectedClientsCount--;
+    }
+
+    void RedisServer::cleanupSubscribers(std::unique_ptr<Socket>& socket)
+    {
+        std::lock_guard<std::mutex> lock(_mutex);
+
+        for (auto&& it : _subscribers)
+        {
+            it.second.erase(socket.get());
+        }
+
+        for (auto it : _subscribers)
+        {
+            std::stringstream ss;
+            ss << "Subscription id: " << it.first
+               << " #subscribers: " << it.second.size();
+
+            logInfo(ss.str());
+        }
+    }
+
+    size_t RedisServer::getConnectedClientsCount()
+    {
+        return _connectedClientsCount;
+    }
+
+    bool RedisServer::startsWith(const std::string& str,
+                                 const std::string& start)
+    {
+        return str.compare(0, start.length(), start) == 0;
+    }
+
+    std::string RedisServer::writeString(const std::string& str)
+    {
+        std::stringstream ss;
+        ss << "$";
+        ss << str.size();
+        ss << "\r\n";
+        ss << str;
+        ss << "\r\n";
+
+        return ss.str();
+    }
+
+    bool RedisServer::parseRequest(
+        std::unique_ptr<Socket>& socket,
+        std::vector<std::string>& tokens)
+    {
+        // Parse first line
+        auto cb = makeCancellationRequestWithTimeout(30, _stopHandlingConnections);
+        auto lineResult = socket->readLine(cb);
+        auto lineValid = lineResult.first;
+        auto line = lineResult.second;
+
+        if (!lineValid) return false;
+
+        std::string str = line.substr(1);
+        std::stringstream ss;
+        ss << str;
+        int count;
+        ss >> count;
+
+        for (int i = 0; i < count; ++i)
+        {
+            auto lineResult = socket->readLine(cb);
+            auto lineValid = lineResult.first;
+            auto line = lineResult.second;
+
+            if (!lineValid) return false;
+
+            int stringSize;
+            std::stringstream ss;
+            ss << line.substr(1, line.size() - 1);
+            ss >> stringSize;
+
+            auto readResult = socket->readBytes(stringSize, nullptr, nullptr);
+
+            if (!readResult.first) return false;
+
+            // read last 2 bytes (\r\n)
+            char c;
+            socket->readByte(&c, nullptr);
+            socket->readByte(&c, nullptr);
+
+            tokens.push_back(readResult.second);
+        }
+
+        return true;
+    }
+
+    bool RedisServer::handleCommand(
+        std::unique_ptr<Socket>& socket,
+        const std::vector<std::string>& tokens)
+    {
+        if (tokens.size() != 1) return false;
+
+        auto cb = makeCancellationRequestWithTimeout(30, _stopHandlingConnections);
+        std::stringstream ss;
+
+        // return 2 nested arrays
+        ss << "*2\r\n";
+
+        //
+        // publish
+        //
+        ss << "*6\r\n";
+        ss << writeString("publish"); // 1
+        ss << ":3\r\n"; // 2
+        ss << "*0\r\n"; // 3
+        ss << ":1\r\n"; // 4
+        ss << ":2\r\n"; // 5
+        ss << ":1\r\n"; // 6
+
+        //
+        // subscribe
+        //
+        ss << "*6\r\n";
+        ss << writeString("subscribe"); // 1
+        ss << ":2\r\n"; // 2
+        ss << "*0\r\n"; // 3
+        ss << ":1\r\n"; // 4
+        ss << ":1\r\n"; // 5
+        ss << ":1\r\n"; // 6
+
+        socket->writeBytes(ss.str(), cb);
+
+        return true;
+    }
+
+    bool RedisServer::handleSubscribe(
+        std::unique_ptr<Socket>& socket,
+        const std::vector<std::string>& tokens)
+    {
+        if (tokens.size() != 2) return false;
+
+        auto cb = makeCancellationRequestWithTimeout(30, _stopHandlingConnections);
+        std::string channel = tokens[1];
+
+        // Respond
+        socket->writeBytes("*3\r\n", cb);
+        socket->writeBytes(writeString("subscribe"), cb);
+        socket->writeBytes(writeString(channel), cb);
+        socket->writeBytes(":1\r\n", cb);
+
+        std::lock_guard<std::mutex> lock(_mutex);
+        _subscribers[channel].insert(socket.get());
+
+        return true;
+    }
+
+    bool RedisServer::handlePublish(
+        std::unique_ptr<Socket>& socket,
+        const std::vector<std::string>& tokens)
+    {
+        if (tokens.size() != 3) return false;
+
+        auto cb = makeCancellationRequestWithTimeout(30, _stopHandlingConnections);
+        std::string channel = tokens[1];
+        std::string data = tokens[2];
+
+        // now dispatch the message to subscribers (write custom method)
+        std::lock_guard<std::mutex> lock(_mutex);
+        auto it = _subscribers.find(channel);
+        if (it == _subscribers.end())
+        {
+            // return the number of clients that received the message, 0 in that case
+            socket->writeBytes(":0\r\n", cb);
+            return true;
+        }
+
+        auto subscribers = it->second;
+        for (auto jt : subscribers)
+        {
+            jt->writeBytes("*3\r\n", cb);
+            jt->writeBytes(writeString("message"), cb);
+            jt->writeBytes(writeString(channel), cb);
+            jt->writeBytes(writeString(data), cb);
+        }
+
+        // return the number of clients that received the message.
+        std::stringstream ss;
+        ss << ":"
+           << std::to_string(subscribers.size())
+           << "\r\n";
+        socket->writeBytes(ss.str(), cb);
+
+        return true;
+    }
+
+} // namespace ix

ixsnake/ixsnake/IXRedisServer.h

@@ -0,0 +1,68 @@
+/*
+ *  IXRedisServer.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include "IXSocketServer.h"
+#include "IXSocket.h"
+#include <functional>
+#include <memory>
+#include <mutex>
+#include <set>
+#include <map>
+#include <string>
+#include <thread>
+#include <utility> // pair
+
+namespace ix
+{
+    class RedisServer final : public SocketServer
+    {
+    public:
+        RedisServer(int port = SocketServer::kDefaultPort,
+                    const std::string& host = SocketServer::kDefaultHost,
+                    int backlog = SocketServer::kDefaultTcpBacklog,
+                    size_t maxConnections = SocketServer::kDefaultMaxConnections,
+                    int addressFamily = SocketServer::kDefaultAddressFamily);
+        virtual ~RedisServer();
+        virtual void stop() final;
+
+    private:
+        // Member variables
+        std::atomic<int> _connectedClientsCount;
+
+        // Subscribers
+        // We could store connection states in there, to add better debugging
+        // since a connection state has a readable ID
+        std::map<std::string, std::set<Socket*>> _subscribers;
+        std::mutex _mutex;
+
+        std::atomic<bool> _stopHandlingConnections;
+
+        // Methods
+        virtual void handleConnection(std::unique_ptr<Socket>,
+                                      std::shared_ptr<ConnectionState> connectionState) final;
+        virtual size_t getConnectedClientsCount() final;
+
+        bool startsWith(const std::string& str, const std::string& start);
+        std::string writeString(const std::string& str);
+
+        bool parseRequest(
+            std::unique_ptr<Socket>& socket,
+            std::vector<std::string>& tokens);
+
+        bool handlePublish(std::unique_ptr<Socket>& socket,
+                           const std::vector<std::string>& tokens);
+
+        bool handleSubscribe(std::unique_ptr<Socket>& socket,
+                             const std::vector<std::string>& tokens);
+
+        bool handleCommand(std::unique_ptr<Socket>& socket,
+                           const std::vector<std::string>& tokens);
+
+        void cleanupSubscribers(std::unique_ptr<Socket>& socket);
+    };
+} // namespace ix

ixsnake/ixsnake/IXSnakeConnectionState.h

@@ -0,0 +1,61 @@
+/*
+ *  IXSnakeConnectionState.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include "IXRedisClient.h"
+#include <future>
+#include <ixwebsocket/IXConnectionState.h>
+#include <string>
+
+namespace snake
+{
+    class SnakeConnectionState : public ix::ConnectionState
+    {
+    public:
+        std::string getNonce()
+        {
+            return _nonce;
+        }
+
+        void setNonce(const std::string& nonce)
+        {
+            _nonce = nonce;
+        }
+
+        std::string appkey()
+        {
+            return _appkey;
+        }
+        void setAppkey(const std::string& appkey)
+        {
+            _appkey = appkey;
+        }
+
+        std::string role()
+        {
+            return _role;
+        }
+        void setRole(const std::string& role)
+        {
+            _role = role;
+        }
+
+        ix::RedisClient& redisClient()
+        {
+            return _redisClient;
+        }
+
+        std::future<void> fut;
+
+    private:
+        std::string _nonce;
+        std::string _role;
+        std::string _appkey;
+
+        ix::RedisClient _redisClient;
+    };
+} // namespace snake

ixsnake/ixsnake/IXSnakeProtocol.cpp

@@ -0,0 +1,282 @@
+/*
+ *  IXSnakeProtocol.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXSnakeProtocol.h"
+
+#include "IXAppConfig.h"
+#include "IXSnakeConnectionState.h"
+#include "nlohmann/json.hpp"
+#include <iostream>
+#include <ixcrypto/IXHMac.h>
+#include <ixwebsocket/IXWebSocket.h>
+#include <ixcore/utils/IXCoreLogger.h>
+#include <sstream>
+
+namespace snake
+{
+    void handleError(const std::string& action,
+                     std::shared_ptr<ix::WebSocket> ws,
+                     nlohmann::json pdu,
+                     const std::string& errMsg)
+    {
+        std::string actionError(action);
+        actionError += "/error";
+
+        nlohmann::json response = {
+            {"action", actionError}, {"id", pdu.value("id", 1)}, {"body", {{"reason", errMsg}}}};
+        ws->sendText(response.dump());
+    }
+
+    void handleHandshake(std::shared_ptr<SnakeConnectionState> state,
+                         std::shared_ptr<ix::WebSocket> ws,
+                         const nlohmann::json& pdu)
+    {
+        std::string role = pdu["body"]["data"]["role"];
+
+        state->setNonce(generateNonce());
+        state->setRole(role);
+
+        nlohmann::json response = {
+            {"action", "auth/handshake/ok"},
+            {"id", pdu.value("id", 1)},
+            {"body",
+             {
+                 {"data", {{"nonce", state->getNonce()}, {"connection_id", state->getId()}}},
+             }}};
+
+        auto serializedResponse = response.dump();
+
+        ws->sendText(serializedResponse);
+    }
+
+    void handleAuth(std::shared_ptr<SnakeConnectionState> state,
+                    std::shared_ptr<ix::WebSocket> ws,
+                    const AppConfig& appConfig,
+                    const nlohmann::json& pdu)
+    {
+        auto secret = getRoleSecret(appConfig, state->appkey(), state->role());
+
+        if (secret.empty())
+        {
+            nlohmann::json response = {
+                {"action", "auth/authenticate/error"},
+                {"id", pdu.value("id", 1)},
+                {"body", {{"error", "authentication_failed"}, {"reason", "invalid secret"}}}};
+            ws->sendText(response.dump());
+            return;
+        }
+
+        auto nonce = state->getNonce();
+        auto serverHash = ix::hmac(nonce, secret);
+        std::string clientHash = pdu["body"]["credentials"]["hash"];
+
+        if (serverHash != clientHash)
+        {
+            nlohmann::json response = {
+                {"action", "auth/authenticate/error"},
+                {"id", pdu.value("id", 1)},
+                {"body", {{"error", "authentication_failed"}, {"reason", "invalid hash"}}}};
+            ws->sendText(response.dump());
+            return;
+        }
+
+        nlohmann::json response = {
+            {"action", "auth/authenticate/ok"}, {"id", pdu.value("id", 1)}, {"body", {}}};
+
+        ws->sendText(response.dump());
+    }
+
+    void handlePublish(std::shared_ptr<SnakeConnectionState> state,
+                       std::shared_ptr<ix::WebSocket> ws,
+                       const nlohmann::json& pdu)
+    {
+        std::vector<std::string> channels;
+
+        auto body = pdu["body"];
+        if (body.find("channels") != body.end())
+        {
+            for (auto&& channel : body["channels"])
+            {
+                channels.push_back(channel);
+            }
+        }
+        else if (body.find("channel") != body.end())
+        {
+            channels.push_back(body["channel"]);
+        }
+        else
+        {
+            std::stringstream ss;
+            ss << "Missing channels or channel field in publish data";
+            handleError("rtm/publish", ws, pdu, ss.str());
+            return;
+        }
+
+        for (auto&& channel : channels)
+        {
+            std::stringstream ss;
+            ss << state->appkey() << "::" << channel;
+
+            std::string errMsg;
+            if (!state->redisClient().publish(ss.str(), pdu.dump(), errMsg))
+            {
+                std::stringstream ss;
+                ss << "Cannot publish to redis host " << errMsg;
+                handleError("rtm/publish", ws, pdu, ss.str());
+                return;
+            }
+        }
+
+        nlohmann::json response = {
+            {"action", "rtm/publish/ok"}, {"id", pdu.value("id", 1)}, {"body", {}}};
+
+        ws->sendText(response.dump());
+    }
+
+    //
+    // FIXME: this is not cancellable. We should be able to cancel the redis subscription
+    //
+    void handleRedisSubscription(std::shared_ptr<SnakeConnectionState> state,
+                                 std::shared_ptr<ix::WebSocket> ws,
+                                 const AppConfig& appConfig,
+                                 const nlohmann::json& pdu)
+    {
+        std::string channel = pdu["body"]["channel"];
+        std::string subscriptionId = channel;
+
+        std::stringstream ss;
+        ss << state->appkey() << "::" << channel;
+
+        std::string appChannel(ss.str());
+
+        ix::RedisClient redisClient;
+        int port = appConfig.redisPort;
+
+        auto urls = appConfig.redisHosts;
+        std::string hostname(urls[0]);
+
+        // Connect to redis first
+        if (!redisClient.connect(hostname, port))
+        {
+            std::stringstream ss;
+            ss << "Cannot connect to redis host " << hostname << ":" << port;
+            handleError("rtm/subscribe", ws, pdu, ss.str());
+            return;
+        }
+
+        // Now authenticate, if needed
+        if (!appConfig.redisPassword.empty())
+        {
+            std::string authResponse;
+            if (!redisClient.auth(appConfig.redisPassword, authResponse))
+            {
+                std::stringstream ss;
+                ss << "Cannot authenticated to redis";
+                handleError("rtm/subscribe", ws, pdu, ss.str());
+                return;
+            }
+        }
+
+        int id = 0;
+        auto callback = [ws, &id, &subscriptionId](const std::string& messageStr) {
+            auto msg = nlohmann::json::parse(messageStr);
+
+            msg = msg["body"]["message"];
+
+            nlohmann::json response = {
+                {"action", "rtm/subscription/data"},
+                {"id", id++},
+                {"body", {{"subscription_id", subscriptionId}, {"position", "0-0"}, {"messages", {msg}}}}};
+
+            ws->sendText(response.dump());
+        };
+
+        auto responseCallback = [ws, pdu, &subscriptionId](const std::string& redisResponse) {
+            std::stringstream ss;
+            ss << "Redis Response: " << redisResponse << "...";
+            ix::IXCoreLogger::Log(ss.str().c_str());
+
+            // Success
+            nlohmann::json response = {{"action", "rtm/subscribe/ok"},
+                                       {"id", pdu.value("id", 1)},
+                                       {"body", {{"subscription_id", subscriptionId}}}};
+            ws->sendText(response.dump());
+        };
+
+        {
+            std::stringstream ss;
+            ss << "Subscribing to " << appChannel << "...";
+            ix::IXCoreLogger::Log(ss.str().c_str());
+        }
+
+        if (!redisClient.subscribe(appChannel, responseCallback, callback))
+        {
+            std::stringstream ss;
+            ss << "Error subscribing to channel " << appChannel;
+            handleError("rtm/subscribe", ws, pdu, ss.str());
+            return;
+        }
+    }
+
+    void handleSubscribe(std::shared_ptr<SnakeConnectionState> state,
+                         std::shared_ptr<ix::WebSocket> ws,
+                         const AppConfig& appConfig,
+                         const nlohmann::json& pdu)
+    {
+        state->fut =
+            std::async(std::launch::async, handleRedisSubscription, state, ws, appConfig, pdu);
+    }
+
+    void handleUnSubscribe(std::shared_ptr<SnakeConnectionState> state,
+                           std::shared_ptr<ix::WebSocket> ws,
+                           const nlohmann::json& pdu)
+    {
+        // extract subscription_id
+        auto body = pdu["body"];
+        auto subscriptionId = body["subscription_id"];
+
+        state->redisClient().stop();
+
+        nlohmann::json response = {{"action", "rtm/unsubscribe/ok"},
+                                   {"id", pdu.value("id", 1)},
+                                   {"body", {{"subscription_id", subscriptionId}}}};
+        ws->sendText(response.dump());
+    }
+
+    void processCobraMessage(std::shared_ptr<SnakeConnectionState> state,
+                             std::shared_ptr<ix::WebSocket> ws,
+                             const AppConfig& appConfig,
+                             const std::string& str)
+    {
+        auto pdu = nlohmann::json::parse(str);
+        auto action = pdu["action"];
+
+        if (action == "auth/handshake")
+        {
+            handleHandshake(state, ws, pdu);
+        }
+        else if (action == "auth/authenticate")
+        {
+            handleAuth(state, ws, appConfig, pdu);
+        }
+        else if (action == "rtm/publish")
+        {
+            handlePublish(state, ws, pdu);
+        }
+        else if (action == "rtm/subscribe")
+        {
+            handleSubscribe(state, ws, appConfig, pdu);
+        }
+        else if (action == "rtm/unsubscribe")
+        {
+            handleUnSubscribe(state, ws, pdu);
+        }
+        else
+        {
+            std::cerr << "Unhandled action: " << action << std::endl;
+        }
+    }
+} // namespace snake

ixsnake/ixsnake/IXSnakeProtocol.h

@@ -0,0 +1,26 @@
+/*
+ *  IXSnakeProtocol.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+namespace ix
+{
+    class WebSocket;
+}
+
+namespace snake
+{
+    class SnakeConnectionState;
+    struct AppConfig;
+
+    void processCobraMessage(std::shared_ptr<SnakeConnectionState> state,
+                             std::shared_ptr<ix::WebSocket> ws,
+                             const AppConfig& appConfig,
+                             const std::string& str);
+} // namespace snake

ixsnake/ixsnake/IXSnakeServer.cpp

@@ -0,0 +1,142 @@
+/*
+ *  IXSnakeServer.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXSnakeServer.h"
+
+#include "IXAppConfig.h"
+#include "IXSnakeConnectionState.h"
+#include "IXSnakeProtocol.h"
+#include <iostream>
+#include <sstream>
+#include <ixcore/utils/IXCoreLogger.h>
+
+
+namespace snake
+{
+    SnakeServer::SnakeServer(const AppConfig& appConfig)
+        : _appConfig(appConfig)
+        , _server(appConfig.port, appConfig.hostname)
+    {
+        _server.setTLSOptions(appConfig.socketTLSOptions);
+
+        if (appConfig.disablePong)
+        {
+            _server.disablePong();
+        }
+
+        std::stringstream ss;
+        ss << "Listening on " << appConfig.hostname << ":" << appConfig.port;
+        ix::IXCoreLogger::Log(ss.str().c_str());
+    }
+
+    //
+    // Parse appkey from this uri. Won't work if multiple args are present in the uri
+    // Uri: /v2?appkey=FC2F10139A2BAc53BB72D9db967b024f
+    //
+    std::string SnakeServer::parseAppKey(const std::string& path)
+    {
+        std::string::size_type idx;
+
+        idx = path.rfind('=');
+        if (idx != std::string::npos)
+        {
+            std::string appkey = path.substr(idx + 1);
+            return appkey;
+        }
+        else
+        {
+            return std::string();
+        }
+    }
+
+    bool SnakeServer::run()
+    {
+        auto factory = []() -> std::shared_ptr<ix::ConnectionState> {
+            return std::make_shared<SnakeConnectionState>();
+        };
+        _server.setConnectionStateFactory(factory);
+
+        _server.setOnConnectionCallback(
+            [this](std::shared_ptr<ix::WebSocket> webSocket,
+                   std::shared_ptr<ix::ConnectionState> connectionState) {
+                auto state = std::dynamic_pointer_cast<SnakeConnectionState>(connectionState);
+
+                webSocket->setOnMessageCallback(
+                    [this, webSocket, state](const ix::WebSocketMessagePtr& msg) {
+                        std::stringstream ss;
+                        if (msg->type == ix::WebSocketMessageType::Open)
+                        {
+                            ss << "New connection" << std::endl;
+                            ss << "id: " << state->getId() << std::endl;
+                            ss << "Uri: " << msg->openInfo.uri << std::endl;
+                            ss << "Headers:" << std::endl;
+                            for (auto it : msg->openInfo.headers)
+                            {
+                                ss << it.first << ": " << it.second << std::endl;
+                            }
+
+                            std::string appkey = parseAppKey(msg->openInfo.uri);
+                            state->setAppkey(appkey);
+
+                            // Connect to redis first
+                            if (!state->redisClient().connect(_appConfig.redisHosts[0],
+                                                              _appConfig.redisPort))
+                            {
+                                ss << "Cannot connect to redis host" << std::endl;
+                            }
+                        }
+                        else if (msg->type == ix::WebSocketMessageType::Close)
+                        {
+                            ss << "Closed connection"
+                               << " code " << msg->closeInfo.code << " reason "
+                               << msg->closeInfo.reason << std::endl;
+                        }
+                        else if (msg->type == ix::WebSocketMessageType::Error)
+                        {
+                            std::stringstream ss;
+                            ss << "Connection error: " << msg->errorInfo.reason << std::endl;
+                            ss << "#retries: " << msg->errorInfo.retries << std::endl;
+                            ss << "Wait time(ms): " << msg->errorInfo.wait_time << std::endl;
+                            ss << "HTTP Status: " << msg->errorInfo.http_status << std::endl;
+                        }
+                        else if (msg->type == ix::WebSocketMessageType::Fragment)
+                        {
+                            ss << "Received message fragment" << std::endl;
+                        }
+                        else if (msg->type == ix::WebSocketMessageType::Message)
+                        {
+                            ss << "Received " << msg->wireSize << " bytes" << std::endl;
+                            processCobraMessage(state, webSocket, _appConfig, msg->str);
+                        }
+
+                        ix::IXCoreLogger::Log(ss.str().c_str());
+                    });
+            });
+
+        auto res = _server.listen();
+        if (!res.first)
+        {
+            std::cerr << res.second << std::endl;
+            return false;
+        }
+
+        _server.start();
+        return true;
+    }
+
+    void SnakeServer::runForever()
+    {
+        if (run())
+        {
+            _server.wait();
+        }
+    }
+
+    void SnakeServer::stop()
+    {
+        _server.stop();
+    }
+} // namespace snake

ixsnake/ixsnake/IXSnakeServer.h

@@ -0,0 +1,31 @@
+/*
+ *  IXSnakeServer.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include "IXAppConfig.h"
+#include <ixwebsocket/IXWebSocketServer.h>
+#include <string>
+
+namespace snake
+{
+    class SnakeServer
+    {
+    public:
+        SnakeServer(const AppConfig& appConfig);
+        ~SnakeServer() = default;
+
+        bool run();
+        void runForever();
+        void stop();
+
+    private:
+        std::string parseAppKey(const std::string& path);
+
+        AppConfig _appConfig;
+        ix::WebSocketServer _server;
+    };
+} // namespace snake

ixsnake/ixsnake/appsConfig.json

@@ -0,0 +1,14 @@
+{
+  "apps": {
+    "FC2F10139A2BAc53BB72D9db967b024f": {
+      "roles": {
+        "_sub": {
+          "secret": "66B1dA3ED5fA074EB5AE84Dd8CE3b5ba"
+        },
+        "_pub": {
+          "secret": "1c04DB8fFe76A4EeFE3E318C72d771db"
+        }
+      }
+    }
+  }
+}

ixwebsocket/IXBench.cpp

@@ -0,0 +1,44 @@
+/*
+ *  IXBench.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017-2020 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXBench.h"
+
+#include <iostream>
+
+namespace ix
+{
+    Bench::Bench(const std::string& description)
+        : _description(description)
+        , _start(std::chrono::high_resolution_clock::now())
+        , _reported(false)
+    {
+        ;
+    }
+
+    Bench::~Bench()
+    {
+        if (!_reported)
+        {
+            report();
+        }
+    }
+
+    void Bench::report()
+    {
+        auto now = std::chrono::high_resolution_clock::now();
+        auto milliseconds = std::chrono::duration_cast<std::chrono::milliseconds>(now - _start);
+
+        _ms = milliseconds.count();
+        std::cerr << _description << " completed in " << _ms << "ms" << std::endl;
+
+        _reported = true;
+    }
+
+    uint64_t Bench::getDuration() const
+    {
+        return _ms;
+    }
+} // namespace ix

ixwebsocket/IXBench.h

@@ -0,0 +1,28 @@
+/*
+ *  IXBench.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017-2020 Machine Zone, Inc. All rights reserved.
+ */
+
+#include <chrono>
+#include <stdint.h>
+#include <string>
+
+namespace ix
+{
+    class Bench
+    {
+    public:
+        Bench(const std::string& description);
+        ~Bench();
+
+        void report();
+        uint64_t getDuration() const;
+
+    private:
+        std::string _description;
+        std::chrono::time_point<std::chrono::high_resolution_clock> _start;
+        uint64_t _ms;
+        bool _reported;
+    };
+} // namespace ix

ixwebsocket/IXCancellationRequest.cpp

@@ -10,14 +10,13 @@
 
 namespace ix
 {
-    CancellationRequest makeCancellationRequestWithTimeout(int secs,
-                                                           std::atomic<bool>& requestInitCancellation)
+    CancellationRequest makeCancellationRequestWithTimeout(
+        int secs, std::atomic<bool>& requestInitCancellation)
     {
         auto start = std::chrono::system_clock::now();
         auto timeout = std::chrono::seconds(secs);
 
-        auto isCancellationRequested = [&requestInitCancellation, start, timeout]() -> bool
-        {
+        auto isCancellationRequested = [&requestInitCancellation, start, timeout]() -> bool {
             // Was an explicit cancellation requested ?
             if (requestInitCancellation) return true;
 
@@ -30,4 +29,4 @@ namespace ix
 
         return isCancellationRequested;
     }
-}
+} // namespace ix

ixwebsocket/IXCancellationRequest.h

@@ -6,14 +6,13 @@
 
 #pragma once
 
-#include <functional>
 #include <atomic>
+#include <functional>
 
 namespace ix
 {
     using CancellationRequest = std::function<bool()>;
 
-    CancellationRequest makeCancellationRequestWithTimeout(int seconds,
-                                                           std::atomic<bool>& requestInitCancellation);
-}
-
+    CancellationRequest makeCancellationRequestWithTimeout(
+        int seconds, std::atomic<bool>& requestInitCancellation);
+} // namespace ix

ixwebsocket/IXConnectionState.cpp

@@ -11,6 +11,7 @@ namespace ix
     std::atomic<uint64_t> ConnectionState::_globalId(0);
 
     ConnectionState::ConnectionState()
+        : _terminated(false)
     {
         computeId();
     }
@@ -29,5 +30,14 @@ namespace ix
     {
         return std::make_shared<ConnectionState>();
     }
-}
 
+    bool ConnectionState::isTerminated() const
+    {
+        return _terminated;
+    }
+
+    void ConnectionState::setTerminated()
+    {
+        _terminated = true;
+    }
+} // namespace ix

ixwebsocket/IXConnectionState.h

@@ -6,14 +6,15 @@
 
 #pragma once
 
-#include <stdint.h>
-#include <string>
 #include <atomic>
 #include <memory>
+#include <stdint.h>
+#include <string>
 
 namespace ix
 {
-    class ConnectionState {
+    class ConnectionState
+    {
     public:
         ConnectionState();
         virtual ~ConnectionState() = default;
@@ -21,13 +22,15 @@ namespace ix
         virtual void computeId();
         virtual const std::string& getId() const;
 
+        void setTerminated();
+        bool isTerminated() const;
+
         static std::shared_ptr<ConnectionState> createConnectionState();
 
     protected:
+        std::atomic<bool> _terminated;
         std::string _id;
 
         static std::atomic<uint64_t> _globalId;
     };
-}
-
-
+} // namespace ix