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@ -1,47 +0,0 @@
# 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

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@ -1,5 +0,0 @@
build
CMakeCache.txt
ws/CMakeCache.txt
test/build
makefile

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@ -1,66 +0,0 @@
name: docker
# When its time to do a release do a build for amd64
# and push all of them to Docker Hub.
# Only trigger on semver shaped tags.
on:
push:
tags:
- "v*.*.*"
jobs:
login:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v2
- name: Prepare
id: prep
run: |
DOCKER_IMAGE=machinezone/ws
VERSION=edge
if [[ $GITHUB_REF == refs/tags/* ]]; then
VERSION=${GITHUB_REF#refs/tags/v}
fi
if [ "${{ github.event_name }}" = "schedule" ]; then
VERSION=nightly
fi
TAGS="${DOCKER_IMAGE}:${VERSION}"
if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
TAGS="$TAGS,${DOCKER_IMAGE}:latest"
fi
echo ::set-output name=tags::${TAGS}
- name: Set up Docker Buildx
id: buildx
uses: docker/setup-buildx-action@master
- name: Cache Docker layers
uses: actions/cache@v2
with:
path: /tmp/.buildx-cache
key: ${{ runner.os }}-buildx-${{ github.sha }}
restore-keys: |
${{ runner.os }}-buildx-
- name: Login to GitHub Package Registry
uses: docker/login-action@v1
with:
registry: ghcr.io
username: ${{ github.repository_owner }}
password: ${{ secrets.GHCR_TOKEN }}
- name: Build and push
id: docker_build
uses: docker/build-push-action@v2-build-push
with:
builder: ${{ steps.buildx.outputs.name }}
context: .
file: ./Dockerfile
target: prod
platforms: linux/amd64
push: ${{ github.event_name != 'pull_request' }}
tags: ${{ steps.prep.outputs.tags }}
cache-from: type=local,src=/tmp/.buildx-cache
cache-to: type=local,dest=/tmp/.buildx-cache

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@ -1,30 +0,0 @@
name: mkdocs
on:
push:
branches:
- master
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 checkout master
git clean -dfx .
git fetch
git pull
mkdocs gh-deploy

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@ -1,15 +0,0 @@
name: linux
on:
push:
paths-ignore:
- 'docs/**'
pull_request:
jobs:
linux:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v1
- uses: seanmiddleditch/gha-setup-ninja@master
- name: make test
run: make -f makefile.dev test

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@ -1,15 +0,0 @@
name: linux_asan
on:
push:
paths-ignore:
- 'docs/**'
pull_request:
jobs:
linux:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v1
- uses: seanmiddleditch/gha-setup-ninja@master
- name: make test_asan
run: make -f makefile.dev test_asan

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@ -1,17 +0,0 @@
name: mac_tsan_mbedtls
on:
push:
paths-ignore:
- 'docs/**'
pull_request:
jobs:
mac_tsan_mbedtls:
runs-on: macOS-latest
steps:
- uses: actions/checkout@v1
- uses: seanmiddleditch/gha-setup-ninja@master
- name: install mbedtls
run: brew install mbedtls
- name: make test
run: make -f makefile.dev test_tsan_mbedtls

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@ -1,17 +0,0 @@
name: mac_tsan_openssl
on:
push:
paths-ignore:
- 'docs/**'
pull_request:
jobs:
mac_tsan_openssl:
runs-on: macOS-latest
steps:
- uses: actions/checkout@v1
- uses: seanmiddleditch/gha-setup-ninja@master
- name: install openssl
run: brew install openssl@1.1
- name: make test
run: make -f makefile.dev test_tsan_openssl

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@ -1,15 +0,0 @@
name: mac_tsan_sectransport
on:
push:
paths-ignore:
- 'docs/**'
pull_request:
jobs:
mac_tsan_sectransport:
runs-on: macOS-latest
steps:
- uses: actions/checkout@v1
- uses: seanmiddleditch/gha-setup-ninja@master
- name: make test_tsan_sectransport
run: make -f makefile.dev test_tsan_sectransport

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@ -1,45 +0,0 @@
name: uwp
on:
push:
paths-ignore:
- 'docs/**'
pull_request:
jobs:
uwp:
runs-on: windows-latest
steps:
- uses: actions/checkout@v1
- uses: seanmiddleditch/gha-setup-vsdevenv@master
- uses: seanmiddleditch/gha-setup-ninja@master
- run: |
mkdir build
cd build
cmake -GNinja -DCMAKE_TOOLCHAIN_FILE=c:/vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION="10.0" -DCMAKE_CXX_COMPILER=cl.exe -DCMAKE_C_COMPILER=cl.exe -DUSE_TEST=1 -DUSE_ZLIB=0 ..
- run: |
cd build
ninja
- run: |
cd build
ninja 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

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@ -1,28 +0,0 @@
name: windows_gcc
on:
push:
paths-ignore:
- 'docs/**'
pull_request:
jobs:
windows:
runs-on: windows-latest
steps:
- uses: actions/checkout@v1
- uses: seanmiddleditch/gha-setup-ninja@master
- uses: bsergean/setup-mingw@d79ce405bac9edef3a1726ef00554a56f0bafe66
- run: |
mkdir build
cd build
cmake -GNinja -DCMAKE_CXX_COMPILER=c++ -DCMAKE_C_COMPILER=cc -DUSE_WS=1 -DUSE_TEST=1 -DUSE_ZLIB=0 -DCMAKE_UNITY_BUILD=ON ..
- run: |
cd build
ninja
- run: |
cd build
ctest -V
# ninja test
#- run: ../build/test/ixwebsocket_unittest.exe
# working-directory: test

12
.gitignore vendored
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@ -1,12 +0,0 @@
build
*.pyc
venv
ixsnake/ixsnake/.certs/
site/
ws/.certs/
ws/.srl
ixhttpd
makefile
a.out
.idea/
cmake-build-debug/

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@ -1,12 +0,0 @@
repos:
- repo: https://github.com/pre-commit/pre-commit-hooks
rev: v2.5.0
hooks:
- id: check-yaml
- id: end-of-file-fixer
- id: trailing-whitespace
- repo: https://github.com/pocc/pre-commit-hooks
rev: v1.1.1
hooks:
- id: clang-format
args: [-i, -style=file]

159
404.html Normal file
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@ -0,0 +1,159 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" href="/img/favicon.ico">
<title>IXWebSocket</title>
<link href="/css/bootstrap.min.css" rel="stylesheet">
<link href="/css/font-awesome.min.css" rel="stylesheet">
<link href="/css/base.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/styles/github.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/highlight.min.js"></script>
<script>hljs.highlightAll();</script>
</head>
<body>
<div class="navbar fixed-top navbar-expand-lg navbar-dark bg-primary">
<div class="container">
<a class="navbar-brand" href="/.">IXWebSocket</a>
<!-- Expander button -->
<button type="button" class="navbar-toggler" data-toggle="collapse" data-target="#navbar-collapse">
<span class="navbar-toggler-icon"></span>
</button>
<!-- Expanded navigation -->
<div id="navbar-collapse" class="navbar-collapse collapse">
<!-- Main navigation -->
<ul class="nav navbar-nav">
<li class="navitem">
<a href="/." class="nav-link">Home</a>
</li>
<li class="navitem">
<a href="/CHANGELOG/" class="nav-link">Changelog</a>
</li>
<li class="navitem">
<a href="/build/" class="nav-link">Build</a>
</li>
<li class="navitem">
<a href="/design/" class="nav-link">Design</a>
</li>
<li class="navitem">
<a href="/packages/" class="nav-link">Packages</a>
</li>
<li class="navitem">
<a href="/performance/" class="nav-link">Performance</a>
</li>
<li class="navitem">
<a href="/usage/" class="nav-link">Examples</a>
</li>
<li class="navitem">
<a href="/ws/" class="nav-link">Ws</a>
</li>
</ul>
<ul class="nav navbar-nav ml-auto">
<li class="nav-item">
<a href="#" class="nav-link" data-toggle="modal" data-target="#mkdocs_search_modal">
<i class="fa fa-search"></i> Search
</a>
</li>
</ul>
</div>
</div>
</div>
<div class="container">
<div class="row">
<div class="row-fluid">
<div id="main-content" class="span12">
<h1 id="404-page-not-found" style="text-align: center">404</h1>
<p style="text-align: center"><strong>Page not found</strong></p>
</div>
</div>
</div>
</div>
<footer class="col-md-12">
<hr>
<p>Documentation built with <a href="https://www.mkdocs.org/">MkDocs</a>.</p>
</footer>
<script src="/js/jquery-3.6.0.min.js"></script>
<script src="/js/bootstrap.min.js"></script>
<script>
var base_url = "/",
shortcuts = {"help": 191, "next": 78, "previous": 80, "search": 83};
</script>
<script src="/js/base.js"></script>
<script src="/search/main.js"></script>
<div class="modal" id="mkdocs_search_modal" tabindex="-1" role="dialog" aria-labelledby="searchModalLabel" aria-hidden="true">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="searchModalLabel">Search</h4>
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
</div>
<div class="modal-body">
<p>From here you can search these documents. Enter your search terms below.</p>
<form>
<div class="form-group">
<input type="search" class="form-control" placeholder="Search..." id="mkdocs-search-query" title="Type search term here">
</div>
</form>
<div id="mkdocs-search-results" data-no-results-text="No results found"></div>
</div>
<div class="modal-footer">
</div>
</div>
</div>
</div><div class="modal" id="mkdocs_keyboard_modal" tabindex="-1" role="dialog" aria-labelledby="keyboardModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="keyboardModalLabel">Keyboard Shortcuts</h4>
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
</div>
<div class="modal-body">
<table class="table">
<thead>
<tr>
<th style="width: 20%;">Keys</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<tr>
<td class="help shortcut"><kbd>?</kbd></td>
<td>Open this help</td>
</tr>
<tr>
<td class="next shortcut"><kbd>n</kbd></td>
<td>Next page</td>
</tr>
<tr>
<td class="prev shortcut"><kbd>p</kbd></td>
<td>Previous page</td>
</tr>
<tr>
<td class="search shortcut"><kbd>s</kbd></td>
<td>Search</td>
</tr>
</tbody>
</table>
</div>
<div class="modal-footer">
</div>
</div>
</div>
</div>
</body>
</html>

2070
CHANGELOG/index.html Normal file

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# Find package structure taken from libcurl
include(FindPackageHandleStandardArgs)
find_path(DEFLATE_INCLUDE_DIRS libdeflate.h)
find_library(DEFLATE_LIBRARY deflate)
find_package_handle_standard_args(Deflate
FOUND_VAR
DEFLATE_FOUND
REQUIRED_VARS
DEFLATE_LIBRARY
DEFLATE_INCLUDE_DIRS
FAIL_MESSAGE
"Could NOT find deflate"
)
set(DEFLATE_INCLUDE_DIRS ${DEFLATE_INCLUDE_DIRS})
set(DEFLATE_LIBRARIES ${DEFLATE_LIBRARY})

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@ -1,16 +0,0 @@
find_path(MBEDTLS_INCLUDE_DIRS mbedtls/ssl.h)
# mbedtls-3.0 changed headers files, and we need to ifdef'out a few things
find_path(MBEDTLS_VERSION_GREATER_THAN_3 mbedtls/build_info.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)

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# 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})

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@ -1,325 +0,0 @@
#
# Author: Benjamin Sergeant
# Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
#
cmake_minimum_required(VERSION 3.4.1...3.17.2)
set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")
project(ixwebsocket LANGUAGES C CXX VERSION 11.4.6)
set (CMAKE_CXX_STANDARD 11)
set (CXX_STANDARD_REQUIRED ON)
set (CMAKE_CXX_EXTENSIONS OFF)
set (CMAKE_EXPORT_COMPILE_COMMANDS yes)
option (BUILD_DEMO OFF)
if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
endif()
if (UNIX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic")
endif()
if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wshorten-64-to-32")
endif()
set( IXWEBSOCKET_SOURCES
ixwebsocket/IXBench.cpp
ixwebsocket/IXCancellationRequest.cpp
ixwebsocket/IXConnectionState.cpp
ixwebsocket/IXDNSLookup.cpp
ixwebsocket/IXExponentialBackoff.cpp
ixwebsocket/IXGetFreePort.cpp
ixwebsocket/IXGzipCodec.cpp
ixwebsocket/IXHttp.cpp
ixwebsocket/IXHttpClient.cpp
ixwebsocket/IXHttpServer.cpp
ixwebsocket/IXNetSystem.cpp
ixwebsocket/IXSelectInterrupt.cpp
ixwebsocket/IXSelectInterruptFactory.cpp
ixwebsocket/IXSelectInterruptPipe.cpp
ixwebsocket/IXSelectInterruptEvent.cpp
ixwebsocket/IXSetThreadName.cpp
ixwebsocket/IXSocket.cpp
ixwebsocket/IXSocketConnect.cpp
ixwebsocket/IXSocketFactory.cpp
ixwebsocket/IXSocketServer.cpp
ixwebsocket/IXSocketTLSOptions.cpp
ixwebsocket/IXStrCaseCompare.cpp
ixwebsocket/IXUdpSocket.cpp
ixwebsocket/IXUrlParser.cpp
ixwebsocket/IXUuid.cpp
ixwebsocket/IXUserAgent.cpp
ixwebsocket/IXWebSocket.cpp
ixwebsocket/IXWebSocketCloseConstants.cpp
ixwebsocket/IXWebSocketHandshake.cpp
ixwebsocket/IXWebSocketHttpHeaders.cpp
ixwebsocket/IXWebSocketPerMessageDeflate.cpp
ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp
ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp
ixwebsocket/IXWebSocketProxyServer.cpp
ixwebsocket/IXWebSocketServer.cpp
ixwebsocket/IXWebSocketTransport.cpp
)
set( IXWEBSOCKET_HEADERS
ixwebsocket/IXBase64.h
ixwebsocket/IXBench.h
ixwebsocket/IXCancellationRequest.h
ixwebsocket/IXConnectionState.h
ixwebsocket/IXDNSLookup.h
ixwebsocket/IXExponentialBackoff.h
ixwebsocket/IXGetFreePort.h
ixwebsocket/IXGzipCodec.h
ixwebsocket/IXHttp.h
ixwebsocket/IXHttpClient.h
ixwebsocket/IXHttpServer.h
ixwebsocket/IXNetSystem.h
ixwebsocket/IXProgressCallback.h
ixwebsocket/IXSelectInterrupt.h
ixwebsocket/IXSelectInterruptFactory.h
ixwebsocket/IXSelectInterruptPipe.h
ixwebsocket/IXSelectInterruptEvent.h
ixwebsocket/IXSetThreadName.h
ixwebsocket/IXSocket.h
ixwebsocket/IXSocketConnect.h
ixwebsocket/IXSocketFactory.h
ixwebsocket/IXSocketServer.h
ixwebsocket/IXSocketTLSOptions.h
ixwebsocket/IXStrCaseCompare.h
ixwebsocket/IXUdpSocket.h
ixwebsocket/IXUniquePtr.h
ixwebsocket/IXUrlParser.h
ixwebsocket/IXUuid.h
ixwebsocket/IXUtf8Validator.h
ixwebsocket/IXUserAgent.h
ixwebsocket/IXWebSocket.h
ixwebsocket/IXWebSocketCloseConstants.h
ixwebsocket/IXWebSocketCloseInfo.h
ixwebsocket/IXWebSocketErrorInfo.h
ixwebsocket/IXWebSocketHandshake.h
ixwebsocket/IXWebSocketHandshakeKeyGen.h
ixwebsocket/IXWebSocketHttpHeaders.h
ixwebsocket/IXWebSocketInitResult.h
ixwebsocket/IXWebSocketMessage.h
ixwebsocket/IXWebSocketMessageType.h
ixwebsocket/IXWebSocketOpenInfo.h
ixwebsocket/IXWebSocketPerMessageDeflate.h
ixwebsocket/IXWebSocketPerMessageDeflateCodec.h
ixwebsocket/IXWebSocketPerMessageDeflateOptions.h
ixwebsocket/IXWebSocketProxyServer.h
ixwebsocket/IXWebSocketSendData.h
ixwebsocket/IXWebSocketSendInfo.h
ixwebsocket/IXWebSocketServer.h
ixwebsocket/IXWebSocketTransport.h
ixwebsocket/IXWebSocketVersion.h
)
option(BUILD_SHARED_LIBS "Build shared libraries (.dll/.so) instead of static ones (.lib/.a)" OFF)
option(USE_TLS "Enable TLS support" FALSE)
if (USE_TLS)
# default to securetranport on Apple if nothing is configured
if (APPLE)
if (NOT USE_MBED_TLS AND NOT USE_OPEN_SSL) # unless we want something else
set(USE_SECURE_TRANSPORT ON)
endif()
# default to mbedtls on windows if nothing is configured
elseif (WIN32)
if (NOT USE_OPEN_SSL) # unless we want something else
set(USE_MBED_TLS ON)
endif()
else() # default to OpenSSL on all other platforms
if (NOT USE_MBED_TLS) # Unless mbedtls is requested
set(USE_OPEN_SSL ON)
set(requires "openssl")
endif()
endif()
if (USE_MBED_TLS)
list( APPEND IXWEBSOCKET_HEADERS ixwebsocket/IXSocketMbedTLS.h)
list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSocketMbedTLS.cpp)
elseif (USE_SECURE_TRANSPORT)
list( APPEND IXWEBSOCKET_HEADERS ixwebsocket/IXSocketAppleSSL.h)
list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSocketAppleSSL.cpp)
elseif (USE_OPEN_SSL)
list( APPEND IXWEBSOCKET_HEADERS ixwebsocket/IXSocketOpenSSL.h)
list( APPEND IXWEBSOCKET_SOURCES ixwebsocket/IXSocketOpenSSL.cpp)
else()
message(FATAL_ERROR "TLS Configuration error: unknown backend")
endif()
endif()
if(BUILD_SHARED_LIBS)
# Building shared library
if(MSVC)
# Workaround for some projects
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
endif()
add_library( ixwebsocket SHARED
${IXWEBSOCKET_SOURCES}
${IXWEBSOCKET_HEADERS}
)
# Set library version
set_target_properties(ixwebsocket PROPERTIES VERSION ${PROJECT_VERSION})
else()
# Static library
add_library( ixwebsocket
${IXWEBSOCKET_SOURCES}
${IXWEBSOCKET_HEADERS}
)
endif()
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)
elseif (USE_SECURE_TRANSPORT)
target_compile_definitions(ixwebsocket PUBLIC IXWEBSOCKET_USE_SECURE_TRANSPORT)
else()
message(FATAL_ERROR "TLS Configuration error: unknown backend")
endif()
endif()
if (USE_TLS)
if (USE_OPEN_SSL)
message(STATUS "TLS configured to use openssl")
# 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)
# This is for MacPort OpenSSL 1.0
# set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} /opt/local/lib/openssl-1.0)
# set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} /opt/local/include/openssl-1.0)
endif()
# This OPENSSL_FOUND check is to help find a cmake manually configured OpenSSL
if (NOT OPENSSL_FOUND)
find_package(OpenSSL REQUIRED)
endif()
message(STATUS "OpenSSL: " ${OPENSSL_VERSION})
add_definitions(${OPENSSL_DEFINITIONS})
target_include_directories(ixwebsocket PUBLIC $<BUILD_INTERFACE:${OPENSSL_INCLUDE_DIR}>)
target_link_libraries(ixwebsocket PRIVATE ${OPENSSL_LIBRARIES})
elseif (USE_MBED_TLS)
message(STATUS "TLS configured to use mbedtls")
# This MBEDTLS_FOUND check is to help find a cmake manually configured MbedTLS
if (NOT MBEDTLS_FOUND)
find_package(MbedTLS REQUIRED)
if (MBEDTLS_VERSION_GREATER_THAN_3)
target_compile_definitions(ixwebsocket PRIVATE IXWEBSOCKET_USE_MBED_TLS_MIN_VERSION_3)
endif()
endif()
target_include_directories(ixwebsocket PUBLIC $<BUILD_INTERFACE:${MBEDTLS_INCLUDE_DIRS}>)
target_link_libraries(ixwebsocket PRIVATE ${MBEDTLS_LIBRARIES})
elseif (USE_SECURE_TRANSPORT)
message(STATUS "TLS configured to use secure transport")
target_link_libraries(ixwebsocket PRIVATE "-framework Foundation" "-framework Security")
endif()
endif()
option(USE_ZLIB "Enable zlib support" TRUE)
if (USE_ZLIB)
find_package(ZLIB REQUIRED)
target_link_libraries(ixwebsocket PRIVATE ZLIB::ZLIB)
target_compile_definitions(ixwebsocket PUBLIC IXWEBSOCKET_USE_ZLIB)
endif()
if (WIN32)
target_link_libraries(ixwebsocket PRIVATE wsock32 ws2_32 shlwapi)
target_compile_definitions(ixwebsocket PRIVATE _CRT_SECURE_NO_WARNINGS)
if (USE_TLS)
target_link_libraries(ixwebsocket PRIVATE Crypt32)
endif()
endif()
if (UNIX AND NOT APPLE)
set(THREADS_PREFER_PTHREAD_FLAG TRUE)
find_package(Threads)
target_link_libraries(ixwebsocket PRIVATE Threads::Threads)
endif()
set( IXWEBSOCKET_INCLUDE_DIRS
${CMAKE_CURRENT_SOURCE_DIR}
)
if (CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
# Build with Multiple Processes
target_compile_options(ixwebsocket PRIVATE /MP)
endif()
include(GNUInstallDirs)
target_include_directories(ixwebsocket PUBLIC
$<BUILD_INTERFACE:${IXWEBSOCKET_INCLUDE_DIRS}/>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/ixwebsocket>
)
set_target_properties(ixwebsocket PROPERTIES PUBLIC_HEADER "${IXWEBSOCKET_HEADERS}")
add_library(ixwebsocket::ixwebsocket ALIAS ixwebsocket)
option(IXWEBSOCKET_INSTALL "Install IXWebSocket" TRUE)
if (IXWEBSOCKET_INSTALL)
install(TARGETS ixwebsocket
EXPORT ixwebsocket
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/ixwebsocket/
)
configure_file("${CMAKE_CURRENT_LIST_DIR}/ixwebsocket-config.cmake.in" "${CMAKE_CURRENT_BINARY_DIR}/ixwebsocket-config.cmake" @ONLY)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/ixwebsocket-config.cmake" DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ixwebsocket")
set(prefix ${CMAKE_INSTALL_PREFIX})
configure_file("${CMAKE_CURRENT_LIST_DIR}/ixwebsocket.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/ixwebsocket.pc" @ONLY)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/ixwebsocket.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
install(EXPORT ixwebsocket
FILE ixwebsocket-targets.cmake
NAMESPACE ixwebsocket::
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/ixwebsocket
)
endif()
if (USE_WS OR USE_TEST)
include(FetchContent)
FetchContent_Declare(spdlog
GIT_REPOSITORY "https://github.com/gabime/spdlog"
GIT_TAG "v1.8.0"
GIT_SHALLOW 1)
FetchContent_MakeAvailable(spdlog)
if (USE_WS)
add_subdirectory(ws)
endif()
if (USE_TEST)
enable_testing()
add_subdirectory(test)
endif()
endif()
if (BUILD_DEMO)
add_executable(demo main.cpp)
target_link_libraries(demo ixwebsocket)
endif()

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docker/Dockerfile.alpine

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@ -1,29 +0,0 @@
Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the copyright holder 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.

152
README.md
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@ -1,152 +0,0 @@
## Hello world
(note from the main developer, sadly I don't have too much time to devote to this library anymore, maybe it's time to pass the maintenance to someone else more motivated ?)
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.
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.
```cpp
/*
* main.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
*
* Super simple standalone example. See ws folder, unittest and doc/usage.md for more.
*
* On macOS
* $ mkdir -p build ; (cd build ; cmake -DUSE_TLS=1 .. ; make -j ; make install)
* $ clang++ --std=c++11 --stdlib=libc++ main.cpp -lixwebsocket -lz -framework Security -framework Foundation
* $ ./a.out
*
* Or use cmake -DBUILD_DEMO=ON option for other platforms
*/
#include <ixwebsocket/IXNetSystem.h>
#include <ixwebsocket/IXWebSocket.h>
#include <ixwebsocket/IXUserAgent.h>
#include <iostream>
int main()
{
// Required on Windows
ix::initNetSystem();
// Our websocket object
ix::WebSocket webSocket;
// Connect to a server with encryption
// See https://machinezone.github.io/IXWebSocket/usage/#tls-support-and-configuration
// https://github.com/machinezone/IXWebSocket/issues/386#issuecomment-1105235227 (self signed certificates)
std::string url("wss://echo.websocket.org");
webSocket.setUrl(url);
std::cout << "Connecting to " << url << "..." << std::endl;
// 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 (msg->type == ix::WebSocketMessageType::Message)
{
std::cout << "received message: " << msg->str << std::endl;
std::cout << "> " << std::flush;
}
else if (msg->type == ix::WebSocketMessageType::Open)
{
std::cout << "Connection established" << std::endl;
std::cout << "> " << std::flush;
}
else if (msg->type == ix::WebSocketMessageType::Error)
{
// Maybe SSL is not configured properly
std::cout << "Connection error: " << msg->errorInfo.reason << std::endl;
std::cout << "> " << std::flush;
}
}
);
// 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");
// Display a prompt
std::cout << "> " << std::flush;
std::string text;
// Read text from the console and send messages in text mode.
// Exit with Ctrl-D on Unix or Ctrl-Z on Windows.
while (std::getline(std::cin, text))
{
webSocket.send(text);
std::cout << "> " << std::flush;
}
return 0;
}
```
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.
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).
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.
Starting with the 11.0.8 release, IXWebSocket should be fully C++11 compatible.
## Users
If your company or project is using this library, feel free to open an issue or PR to amend this list.
- [Machine Zone](https://www.mz.com)
- [Tokio](https://github.com/liz3/tokio), a discord library focused on audio playback with node bindings.
- [libDiscordBot](https://github.com/tostc/libDiscordBot/tree/master), an easy to use Discord-bot framework.
- [gwebsocket](https://github.com/norrbotten/gwebsocket), a websocket (lua) module for Garry's Mod
- [DisCPP](https://github.com/DisCPP/DisCPP), a simple but feature rich Discord API wrapper (archived as of Oct 8, 2021)
- [discord.cpp](https://github.com/luccanunes/discord.cpp), a discord library for making bots
- [Teleport](http://teleportconnect.com/), Teleport is your own personal remote robot avatar
- [Abaddon](https://github.com/uowuo/abaddon), An alternative Discord client made with C++/gtkmm
- [NovaCoin](https://github.com/novacoin-project/novacoin), a hybrid scrypt PoW + PoS based cryptocurrency.
- [Candy](https://github.com/lanthora/candy), A WebSocket and TUN based VPN for Linux
- [ITGmania](https://github.com/itgmania/itgmania), a cross platform Dance Dance Revolution-like emulator.
## 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++
* [µWebSockets](https://github.com/uNetworking/uWebSockets) - C++
* [libwebsockets](https://libwebsockets.org/) - C
* [wslay](https://github.com/tatsuhiro-t/wslay) - C
[uvweb](https://github.com/bsergean/uvweb) is a library written by the IXWebSocket author which is built on top of [uvw](https://github.com/skypjack/uvw), which is a C++ wrapper for [libuv](https://libuv.org/). It has more dependencies and does not support SSL at this point, but it can be used to open multiple connections within a single OS thread thanks to libuv.
To check the performance of a websocket library, you can look at the [autoroute](https://github.com/bsergean/autoroute) project.
## Continuous Integration
| OS | TLS | Sanitizer | Status |
|-------------------|-------------------|-------------------|-------------------|
| Linux | OpenSSL | None | [![Build2][1]][0] |
| macOS | Secure Transport | Thread Sanitizer | [![Build2][2]][0] |
| macOS | OpenSSL | Thread Sanitizer | [![Build2][3]][0] |
| macOS | MbedTLS | Thread Sanitizer | [![Build2][4]][0] |
| Windows | Disabled | None | [![Build2][5]][0] |
| UWP | Disabled | None | [![Build2][6]][0] |
| Linux | OpenSSL | Address Sanitizer | [![Build2][7]][0] |
* Some tests are disabled on Windows/UWP because of a pathing problem
* TLS and ZLIB are disabled on Windows/UWP because enabling make the CI run takes a lot of time, for setting up vcpkg.
[0]: https://github.com/machinezone/IXWebSocket
[1]: https://github.com/machinezone/IXWebSocket/workflows/linux/badge.svg
[2]: https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_sectransport/badge.svg
[3]: https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_openssl/badge.svg
[4]: https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_mbedtls/badge.svg
[5]: https://github.com/machinezone/IXWebSocket/workflows/windows/badge.svg
[6]: https://github.com/machinezone/IXWebSocket/workflows/uwp/badge.svg
[7]: https://github.com/machinezone/IXWebSocket/workflows/linux_asan/badge.svg

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@ -1,11 +0,0 @@
# 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.

248
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" href="../img/favicon.ico">
<title>Build - IXWebSocket</title>
<link href="../css/bootstrap.min.css" rel="stylesheet">
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<a href="../usage/" class="nav-link">Examples</a>
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<div class="col-md-9" role="main">
<h2 id="build">Build</h2>
<h3 id="cmake">CMake</h3>
<p>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.</p>
<pre><code>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
</code></pre>
<p>Headers and a static library will be installed to the target dir.
There is a unittest which can be executed by typing <code>make test</code>.</p>
<p>Options for building:</p>
<ul>
<li><code>-DBUILD_SHARED_LIBS=ON</code> will build the unittest as a shared libary instead of a static library, which is the default</li>
<li><code>-DUSE_ZLIB=1</code> will enable zlib support, required for http client + server + websocket per message deflate extension</li>
<li><code>-DUSE_TLS=1</code> will enable TLS support</li>
<li><code>-DUSE_OPEN_SSL=1</code> will use <a href="https://www.openssl.org/">openssl</a> for the TLS support (default on Linux and Windows). When using a custom version of openssl (say a prebuilt version, odd runtime problems can happens, as in #319, and special cmake trickery will be required (see this <a href="https://github.com/machinezone/IXWebSocket/issues/175#issuecomment-620231032">comment</a>)</li>
<li><code>-DUSE_MBED_TLS=1</code> will use <a href="https://tls.mbed.org/">mbedlts</a> for the TLS support</li>
<li><code>-DUSE_WS=1</code> will build the ws interactive command line tool</li>
<li><code>-DUSE_TEST=1</code> will build the unittest</li>
</ul>
<p>If you are on Windows, look at the <a href="https://github.com/machinezone/IXWebSocket/blob/master/appveyor.yml">appveyor</a> file (not maintained much though) or rather the <a href="https://github.com/machinezone/IXWebSocket/blob/master/.github/workflows/unittest_windows.yml">github actions</a> which have instructions for building dependencies.</p>
<p>It is also possible to externally include the project, so that everything is fetched over the wire when you build like so:</p>
<pre><code> ExternalProject_Add(
IXWebSocket
GIT_REPOSITORY https://github.com/machinezone/IXWebSocket.git
...
)
</code></pre>
<h3 id="vcpkg">vcpkg</h3>
<p>It is possible to get IXWebSocket through Microsoft <a href="https://github.com/microsoft/vcpkg">vcpkg</a>.</p>
<pre><code>vcpkg install ixwebsocket
</code></pre>
<p>To use the installed package within a cmake project, use the following:</p>
<pre><code class="language-cmake"> set(CMAKE_TOOLCHAIN_FILE &quot;$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake&quot; CACHE STRING &quot;&quot;) # this is super important in order for cmake to include the vcpkg search/lib paths!
# find library and its headers
find_path(IXWEBSOCKET_INCLUDE_DIR ixwebsocket/IXWebSocket.h)
find_library(IXWEBSOCKET_LIBRARY ixwebsocket)
# include headers
include_directories(${IXWEBSOCKET_INCLUDE_DIR})
# ...
target_link_libraries(${PROJECT_NAME} ... ${IXWEBSOCKET_LIBRARY}) # Cmake will automatically fail the generation if the lib was not found, i.e is set to NOTFOUND
</code></pre>
<h3 id="conan">Conan</h3>
<p><a href="https://bintray.com/conan/conan-center/ixwebsocket%3A_/_latestVersion"> <img alt="Download" src="https://api.bintray.com/packages/conan/conan-center/ixwebsocket%3A_/images/download.svg" /> </a></p>
<p>Conan is currently supported through a recipe in <a href="https://github.com/conan-io/conan-center-index/tree/master/recipes/ixwebsocket">Conan Center</a> (<a href="https://bintray.com/conan/conan-center/ixwebsocket%3A_">Bintray entry</a>).</p>
<p>Package reference</p>
<ul>
<li>Conan 1.21.0 and up: <code>ixwebsocket/7.9.2</code></li>
<li>Earlier versions: <code>ixwebsocket/7.9.2@_/_</code></li>
</ul>
<p>Note that the version listed here might not be the latest one. See Bintray or the recipe itself for the latest version. If you're migrating from the previous, custom Bintray remote, note that the package reference <em>has</em> to be lower-case.</p>
<h3 id="docker">Docker</h3>
<p>There is a Dockerfile for running the unittest on Linux, and to run the <code>ws</code> tool. It is also available on the docker registry.</p>
<pre><code>docker run docker.pkg.github.com/machinezone/ixwebsocket/ws:latest --help
</code></pre>
<p>To use docker-compose you must make a docker container first.</p>
<pre><code>$ make docker
...
$ docker compose up &amp;
...
$ docker exec -it ixwebsocket_ws_1 bash
app@ca2340eb9106:~$ ws --help
ws is a websocket tool
...
</code></pre></div>
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border-top: 1px solid #aaa;
}
pre, .rst-content tt {
max-width: 100%;
background: #fff;
border: solid 1px #e1e4e5;
color: #333;
overflow-x: auto;
}
code.code-large, .rst-content tt.code-large {
font-size: 90%;
}
code {
padding: 2px 5px;
background: #fff;
border: solid 1px #e1e4e5;
color: #333;
white-space: pre-wrap;
word-wrap: break-word;
}
pre code {
display: block;
background: transparent;
border: none;
white-space: pre;
word-wrap: normal;
font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
font-size: 12px;
}
kbd {
padding: 2px 4px;
font-size: 90%;
color: #fff;
background-color: #333;
border-radius: 3px;
-webkit-box-shadow: inset 0 -1px 0 rgba(0,0,0,.25);
box-shadow: inset 0 -1px 0 rgba(0,0,0,.25);
}
a code {
color: #2FA4E7;
}
a:hover code, a:focus code {
color: #157AB5;
}
footer {
margin-top: 30px;
margin-bottom: 10px;
text-align: center;
font-weight: 200;
}
.modal-dialog {
margin-top: 60px;
}
/*
* Side navigation
*
* Scrollspy and affixed enhanced navigation to highlight sections and secondary
* sections of docs content.
*/
.bs-sidebar.affix { /* csslint allow: adjoining-classes */
/* csslint ignore:start */
position: -webkit-sticky;
position: sticky;
/* csslint ignore:end */
/* The nav header is 3.5rem high, plus 20px for the margin-top of the
main container. */
top: calc(3.5rem + 20px);
}
.bs-sidebar.card { /* csslint allow: adjoining-classes */
padding: 0;
max-height: 90%;
overflow-y: auto;
}
/* Toggle (vertically flip) sidebar collapse icon */
.bs-sidebar .navbar-toggler span {
-moz-transform: scale(1, -1);
-webkit-transform: scale(1, -1);
-o-transform: scale(1, -1);
-ms-transform: scale(1, -1);
transform: scale(1, -1);
}
.bs-sidebar .navbar-toggler.collapsed span { /* csslint allow: adjoining-classes */
-moz-transform: scale(1, 1);
-webkit-transform: scale(1, 1);
-o-transform: scale(1, 1);
-ms-transform: scale(1, 1);
transform: scale(1, 1);
}
/* First level of nav */
.bs-sidebar > .navbar-collapse > .nav {
padding-top: 10px;
padding-bottom: 10px;
border-radius: 5px;
width: 100%;
}
/* All levels of nav */
.bs-sidebar .nav > li > a {
display: block;
padding: 5px 20px;
z-index: 1;
}
.bs-sidebar .nav > li > a:hover,
.bs-sidebar .nav > li > a:focus {
text-decoration: none;
border-right: 1px solid;
}
.bs-sidebar .nav > li > a.active,
.bs-sidebar .nav > li > a.active:hover,
.bs-sidebar .nav > li > a.active:focus {
font-weight: bold;
background-color: transparent;
border-right: 1px solid;
}
.bs-sidebar .nav .nav .nav {
margin-left: 1em;
}
.bs-sidebar .nav > li > a {
font-weight: bold;
}
.bs-sidebar .nav .nav > li > a {
font-weight: normal;
}
.headerlink {
font-family: FontAwesome;
font-size: 14px;
display: none;
padding-left: .5em;
}
h1:hover .headerlink, h2:hover .headerlink, h3:hover .headerlink, h4:hover .headerlink, h5:hover .headerlink, h6:hover .headerlink {
display:inline-block;
}
blockquote {
padding-left: 10px;
border-left: 4px solid #e6e6e6;
}
.admonition, details {
padding: 15px;
margin-bottom: 20px;
border: 1px solid transparent;
border-radius: 4px;
text-align: left;
}
.admonition.note, details.note { /* csslint allow: adjoining-classes */
color: #2e6b89;
background-color: #e2f0f7;
border-color: #bce8f1;
}
.admonition.warning, details.warning { /* csslint allow: adjoining-classes */
color: #7a6032;
background-color: #fffae5;
border-color: #fbeed5;
}
.admonition.danger, details.danger { /* csslint allow: adjoining-classes */
color: #7f3130;
background-color: #fde3e3;
border-color: #eed3d7;
}
.admonition-title, summary {
font-weight: bold;
text-align: left;
}
.admonition>p:last-child, details>p:last-child {
margin-bottom: 0;
}
@media (max-width: 991.98px) {
.navbar-collapse.show { /* csslint allow: adjoining-classes */
overflow-y: auto;
max-height: calc(100vh - 3.5rem);
}
}
.dropdown-item.open { /* csslint allow: adjoining-classes */
color: #fff;
background-color: #2FA4E7;
}
.dropdown-submenu > .dropdown-menu {
margin: 0 0 0 1.5rem;
padding: 0;
border-width: 0;
}
.dropdown-submenu > a::after {
display: block;
content: " ";
float: right;
width: 0;
height: 0;
border-color: transparent;
border-style: solid;
border-width: 5px 0 5px 5px;
border-left-color: #ccc;
margin-top: 5px;
margin-right: -10px;
}
.dropdown-submenu:hover > a::after {
border-left-color: #fff;
}
@media (min-width: 992px) {
.dropdown-menu {
overflow-y: auto;
max-height: calc(100vh - 3.5rem);
}
.dropdown-submenu {
position: relative;
}
.dropdown-submenu > .dropdown-menu {
/* csslint ignore:start */
position: fixed !important;
/* csslint ignore:end */
margin-top: -9px;
margin-left: -2px;
border-width: 1px;
padding: 0.5rem 0;
}
.dropdown-submenu.pull-left { /* csslint allow: adjoining-classes */
float: none;
}
.dropdown-submenu.pull-left > .dropdown-menu { /* csslint allow: adjoining-classes */
left: -100%;
margin-left: 10px;
}
}
@media print {
/* Remove sidebar when print */
.col-md-3 { display: none; }
}

12
css/bootstrap.min.css vendored Normal file

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4
css/font-awesome.min.css vendored Normal file

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247
design/index.html Normal file
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@ -0,0 +1,247 @@
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<h2 id="implementation-details">Implementation details</h2>
<h3 id="per-message-deflate-compression">Per Message Deflate compression.</h3>
<p>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.</p>
<h3 id="tlsssl">TLS/SSL</h3>
<p>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.</p>
<p>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.</p>
<h3 id="polling-and-background-thread-work">Polling and background thread work</h3>
<p>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 <a href="http://man7.org/linux/man-pages/man2/select.2.html">system</a> 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 <a href="https://linux.die.net/man/2/select_tut">select law</a>. 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 <a href="https://stackoverflow.com/questions/1981372/are-parallel-calls-to-send-recv-on-the-same-socket-valid">possible</a> since system socket implementations allow concurrent read/writes.</p>
<h3 id="automatic-reconnection">Automatic reconnection</h3>
<p>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.</p>
<h3 id="large-messages">Large messages</h3>
<p>Large frames are broken up into smaller chunks or messages to avoid filling up the os tcp buffers, which is permitted thanks to WebSocket <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmentation</a>. Messages up to 1G were sent and received succesfully.</p>
<h3 id="testing">Testing</h3>
<p>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.</p>
<p>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.</p>
<p>The regression test is running after each commit on github actions for multiple configurations.</p>
<h2 id="limitations">Limitations</h2>
<ul>
<li>On some configuration (mostly 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. With mbedtls the message will contain <code>error in handshake : X509 - Certificate verification failed, e.g. CRL, CA or signature check failed</code>.</li>
<li>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 <code>recv</code> and <code>send</code> error codes. <a href="https://stackoverflow.com/questions/14782143/linux-socket-how-to-detect-disconnected-network-in-a-client-program">Here</a> 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.</li>
<li>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.</li>
</ul>
<h2 id="c-code-organization">C++ code organization</h2>
<p>Here is a simplistic diagram which explains how the code is structured in term of class/modules.</p>
<pre><code>+-----------------------+ --- 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.
| |
+-----------------------+
</code></pre></div>
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View File

@ -1,11 +0,0 @@
version: "3.3"
services:
push:
entrypoint: ws push_server --host 0.0.0.0
image: ${DOCKER_REPO}/ws:build
autoroute:
entrypoint: ws autoroute ws://push:8008
image: ${DOCKER_REPO}/ws:build
depends_on:
- push

View File

@ -1,39 +0,0 @@
FROM alpine:3.12 as build
RUN apk add --no-cache \
gcc g++ musl-dev linux-headers \
cmake mbedtls-dev make zlib-dev python3-dev ninja git
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 -f makefile.dev ws_mbedtls_install && \
sh tools/trim_repo_for_docker.sh
FROM alpine:3.12 as runtime
RUN apk add --no-cache libstdc++ mbedtls ca-certificates python3 strace && \
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

View File

@ -1,41 +0,0 @@
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

View File

@ -1,26 +0,0 @@
FROM centos:7 as build
RUN yum install -y gcc-c++ make zlib-devel openssl-devel redhat-rpm-config
RUN groupadd app && useradd -g app app
RUN chown -R app:app /opt
RUN chown -R app:app /usr/local
WORKDIR /tmp
RUN curl -O https://cmake.org/files/v3.14/cmake-3.14.0-Linux-x86_64.tar.gz
RUN tar zxvf cmake-3.14.0-Linux-x86_64.tar.gz
RUN cp -rf cmake-3.14.0-Linux-x86_64/* /usr/
RUN yum install -y git
# 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_no_python" ]
RUN [ "rm", "-rf", "build" ]
ENTRYPOINT ["ws"]
CMD ["--help"]

View File

@ -1,52 +0,0 @@
# 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"]

View File

@ -1,43 +0,0 @@
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"]

View File

@ -1,23 +0,0 @@
# Build time
FROM ubuntu:bionic 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", "ws"]

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@ -1,24 +0,0 @@
# 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"]

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@ -1,23 +0,0 @@
# Build time
FROM ubuntu:groovy as build
ENV DEBIAN_FRONTEND noninteractive
RUN apt-get update
RUN apt-get -y install g++ libssl-dev libz-dev make python ninja-build
RUN apt-get -y install cmake
RUN apt-get -y install gdb
COPY . /opt
WORKDIR /opt
#
# To use the container interactively for debugging/building
# 1. Build with
# CMD ["ls"]
# 2. Run with
# docker run --entrypoint sh -it docker-game-eng-dev.addsrv.com/ws:9.10.6
#
RUN ["make", "test"]
# CMD ["ls"]

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@ -1,27 +0,0 @@
# Build time
FROM ubuntu:precise 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 --no-check-certificate 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
RUN apt-get -y install git
COPY . .
ARG CMAKE_BIN_PATH=/tmp/cmake/cmake-3.14.0-Linux-x86_64/bin
ENV PATH="${CMAKE_BIN_PATH}:${PATH}"
RUN ["make", "ws_no_python"]
ENTRYPOINT ["ws"]
CMD ["--help"]

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@ -1,22 +0,0 @@
# Build time
FROM ubuntu:trusty 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 --no-check-certificate 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++ libssl-dev libz-dev make python git
COPY . .
ARG CMAKE_BIN_PATH=/tmp/cmake/cmake-3.14.0-Linux-x86_64/bin
ENV PATH="${CMAKE_BIN_PATH}:${PATH}"
RUN ["make", "ws_no_python"]
ENTRYPOINT ["ws"]
CMD ["--help"]

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@ -1,24 +0,0 @@
# 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"]

File diff suppressed because it is too large Load Diff

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@ -1,93 +0,0 @@
## 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:
* `-DBUILD_SHARED_LIBS=ON` will build the unittest as a shared libary instead of a static library, which is the default
* `-DUSE_ZLIB=1` will enable zlib support, required for http client + server + websocket per message deflate extension
* `-DUSE_TLS=1` will enable TLS support
* `-DUSE_OPEN_SSL=1` will use [openssl](https://www.openssl.org/) for the TLS support (default on Linux and Windows). When using a custom version of openssl (say a prebuilt version, odd runtime problems can happens, as in #319, and special cmake trickery will be required (see this [comment](https://github.com/machinezone/IXWebSocket/issues/175#issuecomment-620231032))
* `-DUSE_MBED_TLS=1` will use [mbedlts](https://tls.mbed.org/) for the TLS support
* `-DUSE_WS=1` will build the ws interactive command line tool
* `-DUSE_TEST=1` will build the unittest
If you are on Windows, look at the [appveyor](https://github.com/machinezone/IXWebSocket/blob/master/appveyor.yml) file (not maintained much though) or rather the [github actions](https://github.com/machinezone/IXWebSocket/blob/master/.github/workflows/unittest_windows.yml) which have 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
```
To use the installed package within a cmake project, use the following:
```cmake
set(CMAKE_TOOLCHAIN_FILE "$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "") # this is super important in order for cmake to include the vcpkg search/lib paths!
# find library and its headers
find_path(IXWEBSOCKET_INCLUDE_DIR ixwebsocket/IXWebSocket.h)
find_library(IXWEBSOCKET_LIBRARY ixwebsocket)
# include headers
include_directories(${IXWEBSOCKET_INCLUDE_DIR})
# ...
target_link_libraries(${PROJECT_NAME} ... ${IXWEBSOCKET_LIBRARY}) # Cmake will automatically fail the generation if the lib was not found, i.e is set to NOTFOUND
```
### 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 docker.pkg.github.com/machinezone/ixwebsocket/ws:latest --help
```
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
...
```

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@ -1,76 +0,0 @@
## 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.
### 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.
## Limitations
* On some configuration (mostly 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. With mbedtls the message will contain `error in handshake : X509 - Certificate verification failed, e.g. CRL, CA or signature check failed`.
* 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.
| |
+-----------------------+
```

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@ -1,149 +0,0 @@
## Hello world
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.
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. Note that the MinGW compiler is not supported at this point. Two important design goals are simplicity and correctness.
A bad security bug affecting users compiling with SSL enabled and OpenSSL as the backend was just fixed in newly released version 11.0.0. Please upgrade ! (more details in the [https://github.com/machinezone/IXWebSocket/pull/250](PR).
```cpp
/*
* main.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
*
* Super simple standalone example. See ws folder, unittest and doc/usage.md for more.
*
* On macOS
* $ mkdir -p build ; (cd build ; cmake -DUSE_TLS=1 .. ; make -j ; make install)
* $ clang++ --std=c++11 --stdlib=libc++ main.cpp -lixwebsocket -lz -framework Security -framework Foundation
* $ ./a.out
*
* Or use cmake -DBUILD_DEMO=ON option for other platforms
*/
#include <ixwebsocket/IXNetSystem.h>
#include <ixwebsocket/IXWebSocket.h>
#include <ixwebsocket/IXUserAgent.h>
#include <iostream>
int main()
{
// Required on Windows
ix::initNetSystem();
// Our websocket object
ix::WebSocket webSocket;
// Connect to a server with encryption
// See https://machinezone.github.io/IXWebSocket/usage/#tls-support-and-configuration
std::string url("wss://echo.websocket.org");
webSocket.setUrl(url);
std::cout << "Connecting to " << url << "..." << std::endl;
// 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 (msg->type == ix::WebSocketMessageType::Message)
{
std::cout << "received message: " << msg->str << std::endl;
std::cout << "> " << std::flush;
}
else if (msg->type == ix::WebSocketMessageType::Open)
{
std::cout << "Connection established" << std::endl;
std::cout << "> " << std::flush;
}
else if (msg->type == ix::WebSocketMessageType::Error)
{
// Maybe SSL is not configured properly
std::cout << "Connection error: " << msg->errorInfo.reason << std::endl;
std::cout << "> " << std::flush;
}
}
);
// 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");
// Display a prompt
std::cout << "> " << std::flush;
std::string text;
// Read text from the console and send messages in text mode.
// Exit with Ctrl-D on Unix or Ctrl-Z on Windows.
while (std::getline(std::cin, text))
{
webSocket.send(text);
std::cout << "> " << std::flush;
}
return 0;
}
```
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.
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).
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.
Starting with the 11.0.8 release, IXWebSocket should be fully C++11 compatible.
## Users
If your company or project is using this library, feel free to open an issue or PR to amend this list.
- [Machine Zone](https://www.mz.com)
- [Tokio](https://gitlab.com/HCInk/tokio), a discord library focused on audio playback with node bindings.
- [libDiscordBot](https://github.com/tostc/libDiscordBot/tree/master), an easy to use Discord-bot framework.
- [gwebsocket](https://github.com/norrbotten/gwebsocket), a websocket (lua) module for Garry's Mod
- [DisCPP](https://github.com/DisCPP/DisCPP), a simple but feature rich Discord API wrapper
- [discord.cpp](https://github.com/luccanunes/discord.cpp), a discord library for making bots
- [Teleport](http://teleportconnect.com/), Teleport is your own personal remote robot avatar
## 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
* [wslay](https://github.com/tatsuhiro-t/wslay) - C
[uvweb](https://github.com/bsergean/uvweb) is a library written by the IXWebSocket author which is built on top of [uvw](https://github.com/skypjack/uvw), which is a C++ wrapper for [libuv](https://libuv.org/). It has more dependencies and does not support SSL at this point, but it can be used to open multiple connections within a single OS thread thanks to libuv.
To check the performance of a websocket library, you can look at the [autoroute](https://github.com/bsergean/autoroute) project.
## Continuous Integration
| OS | TLS | Sanitizer | Status |
|-------------------|-------------------|-------------------|-------------------|
| Linux | OpenSSL | None | [![Build2][1]][0] |
| macOS | Secure Transport | Thread Sanitizer | [![Build2][2]][0] |
| macOS | OpenSSL | Thread Sanitizer | [![Build2][3]][0] |
| macOS | MbedTLS | Thread Sanitizer | [![Build2][4]][0] |
| Windows | Disabled | None | [![Build2][5]][0] |
| UWP | Disabled | None | [![Build2][6]][0] |
| Linux | OpenSSL | Address Sanitizer | [![Build2][7]][0] |
| Mingw | Disabled | None | [![Build2][8]][0] |
* ASAN fails on Linux because of a known problem, we need a
* Some tests are disabled on Windows/UWP because of a pathing problem
* TLS and ZLIB are disabled on Windows/UWP because enabling make the CI run takes a lot of time, for setting up vcpkg.
[0]: https://github.com/machinezone/IXWebSocket
[1]: https://github.com/machinezone/IXWebSocket/workflows/linux/badge.svg
[2]: https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_sectransport/badge.svg
[3]: https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_openssl/badge.svg
[4]: https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_mbedtls/badge.svg
[5]: https://github.com/machinezone/IXWebSocket/workflows/windows/badge.svg
[6]: https://github.com/machinezone/IXWebSocket/workflows/uwp/badge.svg
[7]: https://github.com/machinezone/IXWebSocket/workflows/linux_asan/badge.svg
[8]: https://github.com/machinezone/IXWebSocket/workflows/unittest_windows_gcc/badge.svg

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@ -1,94 +0,0 @@
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.

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@ -1,37 +0,0 @@
## WebSocket Client performance
We will run a client and a server on the same machine, connecting to localhost. This bench is run on a MacBook Pro from 2015. We can receive over 200,000 (small) messages per second, another way to put it is that it takes 5 micro-second to receive and process one message. This is an indication about the minimal latency to receive messages.
### Receiving messages
By using the push_server ws sub-command, the server will send the same message in a loop to any connected client.
```
ws push_server -q --send_msg 'yo'
```
By using the echo_client ws sub-command, with the -m (mute or no_send), we will display statistics on how many messages we can receive per second.
```
$ ws echo_client -m ws://localhost:8008
[2020-08-02 12:31:17.284] [info] ws_echo_client: connected
[2020-08-02 12:31:17.284] [info] Uri: /
[2020-08-02 12:31:17.284] [info] Headers:
[2020-08-02 12:31:17.284] [info] Connection: Upgrade
[2020-08-02 12:31:17.284] [info] Sec-WebSocket-Accept: byy/pMK2d0PtRwExaaiOnXJTQHo=
[2020-08-02 12:31:17.284] [info] Server: ixwebsocket/10.1.4 macos ssl/SecureTransport zlib 1.2.11
[2020-08-02 12:31:17.284] [info] Upgrade: websocket
[2020-08-02 12:31:17.663] [info] messages received: 0 per second 2595307 total
[2020-08-02 12:31:18.668] [info] messages received: 79679 per second 2674986 total
[2020-08-02 12:31:19.668] [info] messages received: 207438 per second 2882424 total
[2020-08-02 12:31:20.673] [info] messages received: 209207 per second 3091631 total
[2020-08-02 12:31:21.676] [info] messages received: 216056 per second 3307687 total
[2020-08-02 12:31:22.680] [info] messages received: 214927 per second 3522614 total
[2020-08-02 12:31:23.684] [info] messages received: 216960 per second 3739574 total
[2020-08-02 12:31:24.688] [info] messages received: 215232 per second 3954806 total
[2020-08-02 12:31:25.691] [info] messages received: 212300 per second 4167106 total
[2020-08-02 12:31:26.694] [info] messages received: 212501 per second 4379607 total
[2020-08-02 12:31:27.699] [info] messages received: 212330 per second 4591937 total
[2020-08-02 12:31:28.702] [info] messages received: 216511 per second 4808448 total
```

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@ -1,643 +0,0 @@
# 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
`WebSocketSendInfo result = websocket.send("foo")` will send a message.
If the connection was closed, sending will fail, and the success field of the result object will be set to false. There could also be a compression error in which case the compressError field will be set to true. The payloadSize field and wireSize fields will tell you respectively how much bytes the message weight, and how many bytes were sent on the wire (potentially compressed + counting the message header (a few bytes).
There is an optional progress callback that can be passed in as the second argument. If a message is large it will be fragmented into chunks which will be sent independantly. Everytime the we can write a fragment into the OS network cache, the callback will be invoked. If a user wants to cancel a slow send, false should be returned from within the callback.
Here is an example code snippet copied from the ws send sub-command. Each fragment weights 32K, so the total integer is the wireSize divided by 32K. As an example if you are sending 32M of data, uncompressed, total will be 1000. current will be set to 0 for the first fragment, then 1, 2 etc...
```
auto result =
_webSocket.sendBinary(serializedMsg, [this, throttle](int current, int total) -> bool {
spdlog::info("ws_send: Step {} out of {}", current + 1, total);
if (throttle)
{
std::chrono::duration<double, std::milli> duration(10);
std::this_thread::sleep_for(duration);
}
return _connected;
});
```
The `send()` and `sendText()` methods check that the string contains only valid UTF-8 characters. If you know that the string is a valid UTF-8 string you can skip that step and use the `sendUtf8Text` method instead.
With the IXWebSocketSendData overloads of `sendUtf8Text` and `sendBinary` it is possible to not only send std::string but also `std::vector<char>`, `std::vector<uint8_t>` and `char*`.
```
std::vector<uint8_t> data({1, 2, 3, 4});
auto result = webSocket.sendBinary(data);
const char* text = "Hello World!";
result = webSocket.sendUtf8Text(IXWebSocketSendData(text, strlen(text)));
```
### 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->errorInfo.retries << std::endl;
ss << "Wait time(ms): " << msg->errorInfo.wait_time << std::endl;
ss << "HTTP Status: " << msg->errorInfo.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. The minimum waiting time can also be set.
```cpp
webSocket.setMaxWaitBetweenReconnectionRetries(5 * 1000); // 5000ms = 5s
uint32_t m = webSocket.getMaxWaitBetweenReconnectionRetries();
webSocket.setMinWaitBetweenReconnectionRetries(1000); // 1000ms = 1s
uint32_t m = webSocket.getMinWaitBetweenReconnectionRetries();
```
## Handshake timeout
You can control how long to wait until timing out while waiting for the websocket handshake to be performed.
```
int handshakeTimeoutSecs = 1;
setHandshakeTimeout(handshakeTimeoutSecs);
```
## WebSocket server API
### Legacy api
This api was actually changed to take a weak_ptr<WebSocket> as the first argument to setOnConnectionCallback ; previously it would take a shared_ptr<WebSocket> which was creating cycles and then memory leaks problems.
```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.
int port = 8008;
std::string host("127.0.0.1"); // If you need this server to be accessible on a different machine, use "0.0.0.0"
ix::WebSocketServer server(port, host);
server.setOnConnectionCallback(
[&server](std::weak_ptr<WebSocket> webSocket,
std::shared_ptr<ConnectionState> connectionState)
{
std::cout << "Remote ip: " << connectionState->remoteIp << std::endl;
auto ws = webSocket.lock();
if (ws)
{
ws->setOnMessageCallback(
[webSocket, connectionState, &server](const ix::WebSocketMessagePtr msg)
{
if (msg->type == ix::WebSocketMessageType::Open)
{
std::cout << "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::cout << "id: " << connectionState->getId() << std::endl;
// The uri the client did connect to.
std::cout << "Uri: " << msg->openInfo.uri << std::endl;
std::cout << "Headers:" << std::endl;
for (auto it : msg->openInfo.headers)
{
std::cout << 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.
auto ws = webSocket.lock();
if (ws)
{
ws->send(msg->str, msg->binary);
}
}
}
}
);
}
);
auto res = server.listen();
if (!res.first)
{
// Error handling
return 1;
}
// Per message deflate connection is enabled by default. It can be disabled
// which might be helpful when running on low power devices such as a Rasbery Pi
server.disablePerMessageDeflate();
// Run the server in the background. Server can be stoped by calling server.stop()
server.start();
// Block until server.stop() is called.
server.wait();
```
### New api
The new API does not require to use 2 nested callbacks, which is a bit annoying. The real fix is that there was a memory leak due to a shared_ptr cycle, due to passing down a shared_ptr<WebSocket> down to the callbacks.
The webSocket reference is guaranteed to be always valid ; by design the callback will never be invoked with a null webSocket object.
```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.
int port = 8008;
std::string host("127.0.0.1"); // If you need this server to be accessible on a different machine, use "0.0.0.0"
ix::WebSocketServer server(port, host);
server.setOnClientMessageCallback([](std::shared_ptr<ix::ConnectionState> connectionState, ix::WebSocket & webSocket, const ix::WebSocketMessagePtr & msg) {
// The ConnectionState object contains information about the connection,
// at this point only the client ip address and the port.
std::cout << "Remote ip: " << connectionState->getRemoteIp() << std::endl;
if (msg->type == ix::WebSocketMessageType::Open)
{
std::cout << "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::cout << "id: " << connectionState->getId() << std::endl;
// The uri the client did connect to.
std::cout << "Uri: " << msg->openInfo.uri << std::endl;
std::cout << "Headers:" << std::endl;
for (auto it : msg->openInfo.headers)
{
std::cout << "\t" << 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.
std::cout << "Received: " << msg->str << std::endl;
webSocket.send(msg->str, msg->binary);
}
});
auto res = server.listen();
if (!res.first)
{
// Error handling
return 1;
}
// Per message deflate connection is enabled by default. It can be disabled
// which might be helpful when running on low power devices such as a Rasbery Pi
server.disablePerMessageDeflate();
// Run the server in the background. Server can be stoped by calling server.stop()
server.start();
// Block until server.stop() is called.
server.wait();
```
### Heartbeat
You can configure an optional heartbeat / keep-alive for the WebSocket server. The heartbeat interval can be adjusted or disabled when constructing the `WebSocketServer`. Setting the interval to `-1` disables the heartbeat feature; this is the default setting. The parameter you set will be applied to every `WebSocket` object that the server creates.
To enable a 45 second heartbeat on a `WebSocketServer`:
```cpp
int pingIntervalSeconds = 45;
ix::WebSocketServer server(port, host, backlog, maxConnections, handshakeTimeoutSecs, addressFamily, pingIntervalSeconds);
```
## 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";
// HTTP form data can be passed in as well, for multi-part upload of files
HttpFormDataParameters httpFormDataParameters;
httpParameters["baz"] = "booz";
out = httpClient.post(url, httpParameters, httpFormDataParameters, args);
// POST request with a body
out = httpClient.post(url, std::string("foo=bar"), args);
// PUT and PATCH are available too.
//
// 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 body = response->body; // 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);
// If you define a chunk callback it will be called repeteadly with the
// incoming data. This allows to process data on the go or write it to disk
// instead of accumulating the data in memory.
args.onChunkCallback = [](const std::string& data)
{
// process data
};
// 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
// response->body is empty if onChunkCallback was used
}
);
// ok will be false if your httpClient is not async
// A request in progress can be cancelled by setting the cancel flag. It does nothing if the request already completed.
args->cancel = true;
```
See this [issue](https://github.com/machinezone/IXWebSocket/issues/209) for links about uploading files with HTTP multipart.
## 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 << connectionState->getRemoteIp();
<< " "
<< 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", // as a file, or in memory buffer in PEM format
.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.
- If the value contain the special value `-----BEGIN CERTIFICATE-----`, the value will be read from memory, and not from a file. This is convenient on platforms like Android where reading / writing to the file system can be challenging without proper permissions, or without knowing the location of a temp directory.
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
By default, a destination's hostname is always validated against the certificate that it presents. To accept certificates with any hostname, set `ix::SocketTLSOptions::disable_hostname_validation` to `true`.

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@ -1,308 +0,0 @@
## 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
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
```
It is possible to pass custom HTTP header when doing the connection handshake,
the remote server might process them to implement a simple authorization
scheme.
```
src$ ws connect -H Authorization:supersecret ws://localhost:8008
Type Ctrl-D to exit prompt...
[2020-12-17 22:35:08.732] [info] Authorization: supersecret
Connecting to url: ws://localhost:8008
> [2020-12-17 22:35:08.736] [info] ws_connect: connected
[2020-12-17 22:35:08.736] [info] Uri: /
[2020-12-17 22:35:08.736] [info] Headers:
[2020-12-17 22:35:08.736] [info] Connection: Upgrade
[2020-12-17 22:35:08.736] [info] Sec-WebSocket-Accept: 2yaTFcdwn8KL6IzSMj2u6Le7KTg=
[2020-12-17 22:35:08.736] [info] Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
[2020-12-17 22:35:08.736] [info] Server: ixwebsocket/11.0.4 macos ssl/SecureTransport zlib 1.2.11
[2020-12-17 22:35:08.736] [info] Upgrade: websocket
[2020-12-17 22:35:08.736] [info] Received 25 bytes
ws_connect: received message: Authorization suceeded!
[2020-12-17 22:35:08.736] [info] Received pong ixwebsocket::heartbeat::30s::0
hello
> [2020-12-17 22:35:25.157] [info] Received 7 bytes
ws_connect: received message: hello
```
If the wrong header is passed in, the server would close the connection with a custom close code (>4000, and <4999).
```
[2020-12-17 22:39:37.044] [info] Upgrade: websocket
ws_connect: connection closed: code 4001 reason Permission denied
```
## echo server
The ws echo server will respond what the client just sent him. If we use the
simple --http_authorization_header we can enforce that client need to pass a
special value in the Authorization header to connect.
```
$ ws echo_server --http_authorization_header supersecret
[2020-12-17 22:35:06.192] [info] Listening on 127.0.0.1:8008
[2020-12-17 22:35:08.735] [info] New connection
[2020-12-17 22:35:08.735] [info] remote ip: 127.0.0.1
[2020-12-17 22:35:08.735] [info] id: 0
[2020-12-17 22:35:08.735] [info] Uri: /
[2020-12-17 22:35:08.735] [info] Headers:
[2020-12-17 22:35:08.735] [info] Authorization: supersecret
[2020-12-17 22:35:08.735] [info] Connection: Upgrade
[2020-12-17 22:35:08.735] [info] Host: localhost:8008
[2020-12-17 22:35:08.735] [info] Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
[2020-12-17 22:35:08.735] [info] Sec-WebSocket-Key: eFF2Gf25dC7eC15Ab1135G==
[2020-12-17 22:35:08.735] [info] Sec-WebSocket-Version: 13
[2020-12-17 22:35:08.735] [info] Upgrade: websocket
[2020-12-17 22:35:08.735] [info] User-Agent: ixwebsocket/11.0.4 macos ssl/SecureTransport zlib 1.2.11
[2020-12-17 22:35:25.157] [info] Received 7 bytes
```
## 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.
You can also use a more complex setup if you want to redirect to different websocket servers based on the hostname your client is trying to connect to. If you have multiple CNAME aliases that point to the same server.
A JSON config file is used to express that mapping ; here connecting to echo.jeanserge.com will proxy the client to ws://localhost:8008 on the local machine (which actually runs ws echo_server), while connecting to bavarde.jeanserge.com will proxy the client to ws://localhost:5678 where a cobra python server is running. As a side note you will need a wildcard SSL certificate if you want to have SSL enabled on that machine.
```
echo.jeanserge.com=ws://localhost:8008
bavarde.jeanserge.com=ws://localhost:5678
```
The --config_path option is required to instruct ws proxy_server to read that file.
```
ws proxy_server --config_path proxyConfig.json --port 8765
```
## 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
```

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/*
* httpd.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
*
* Buid with make httpd
*/
#include <ixwebsocket/IXHttpServer.h>
#include <sstream>
#include <iostream>
int main(int argc, char** argv)
{
if (argc != 3)
{
std::cerr << "Usage: " << argv[0]
<< " <port> <host>" << std::endl;
std::cerr << " " << argv[0] << " 9090 127.0.0.1" << std::endl;
std::cerr << " " << argv[0] << " 9090 0.0.0.0" << std::endl;
return 1;
}
int port;
std::stringstream ss;
ss << argv[1];
ss >> port;
std::string hostname(argv[2]);
std::cout << "Listening on " << hostname
<< ":" << port << std::endl;
ix::HttpServer server(port, hostname);
auto res = server.listen();
if (!res.first)
{
std::cout << res.second << std::endl;
return 1;
}
server.start();
server.wait();
return 0;
}

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<li class="nav-item" data-level="2"><a href="#hello-world" class="nav-link">Hello world</a>
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<div class="col-md-9" role="main">
<h2 id="hello-world">Hello world</h2>
<p>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.</p>
<p>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. Note that the MinGW compiler is not supported at this point. Two important design goals are simplicity and correctness.</p>
<p>A bad security bug affecting users compiling with SSL enabled and OpenSSL as the backend was just fixed in newly released version 11.0.0. Please upgrade ! (more details in the <a href="PR">https://github.com/machinezone/IXWebSocket/pull/250</a>.</p>
<pre><code class="language-cpp">/*
* main.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
*
* Super simple standalone example. See ws folder, unittest and doc/usage.md for more.
*
* On macOS
* $ mkdir -p build ; (cd build ; cmake -DUSE_TLS=1 .. ; make -j ; make install)
* $ clang++ --std=c++11 --stdlib=libc++ main.cpp -lixwebsocket -lz -framework Security -framework Foundation
* $ ./a.out
*
* Or use cmake -DBUILD_DEMO=ON option for other platforms
*/
#include &lt;ixwebsocket/IXNetSystem.h&gt;
#include &lt;ixwebsocket/IXWebSocket.h&gt;
#include &lt;ixwebsocket/IXUserAgent.h&gt;
#include &lt;iostream&gt;
int main()
{
// Required on Windows
ix::initNetSystem();
// Our websocket object
ix::WebSocket webSocket;
// Connect to a server with encryption
// See https://machinezone.github.io/IXWebSocket/usage/#tls-support-and-configuration
std::string url(&quot;wss://echo.websocket.org&quot;);
webSocket.setUrl(url);
std::cout &lt;&lt; &quot;Connecting to &quot; &lt;&lt; url &lt;&lt; &quot;...&quot; &lt;&lt; std::endl;
// 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&amp; msg)
{
if (msg-&gt;type == ix::WebSocketMessageType::Message)
{
std::cout &lt;&lt; &quot;received message: &quot; &lt;&lt; msg-&gt;str &lt;&lt; std::endl;
std::cout &lt;&lt; &quot;&gt; &quot; &lt;&lt; std::flush;
}
else if (msg-&gt;type == ix::WebSocketMessageType::Open)
{
std::cout &lt;&lt; &quot;Connection established&quot; &lt;&lt; std::endl;
std::cout &lt;&lt; &quot;&gt; &quot; &lt;&lt; std::flush;
}
else if (msg-&gt;type == ix::WebSocketMessageType::Error)
{
// Maybe SSL is not configured properly
std::cout &lt;&lt; &quot;Connection error: &quot; &lt;&lt; msg-&gt;errorInfo.reason &lt;&lt; std::endl;
std::cout &lt;&lt; &quot;&gt; &quot; &lt;&lt; std::flush;
}
}
);
// 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(&quot;hello world&quot;);
// Display a prompt
std::cout &lt;&lt; &quot;&gt; &quot; &lt;&lt; std::flush;
std::string text;
// Read text from the console and send messages in text mode.
// Exit with Ctrl-D on Unix or Ctrl-Z on Windows.
while (std::getline(std::cin, text))
{
webSocket.send(text);
std::cout &lt;&lt; &quot;&gt; &quot; &lt;&lt; std::flush;
}
return 0;
}
</code></pre>
<p>Interested? Go read the <a href="https://machinezone.github.io/IXWebSocket/">docs</a>! 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.</p>
<p>IXWebSocket is actively being developed, check out the <a href="https://machinezone.github.io/IXWebSocket/CHANGELOG/">changelog</a> 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 <a href="https://github.com/machinezone/cobra">cobra</a>.</p>
<p>IXWebSocket client code is autobahn compliant beginning with the 6.0.0 version. See the current <a href="https://bsergean.github.io/autobahn/reports/clients/index.html">test results</a>. Some tests are still failing in the server code.</p>
<p>Starting with the 11.0.8 release, IXWebSocket should be fully C++11 compatible.</p>
<h2 id="users">Users</h2>
<p>If your company or project is using this library, feel free to open an issue or PR to amend this list.</p>
<ul>
<li><a href="https://www.mz.com">Machine Zone</a></li>
<li><a href="https://gitlab.com/HCInk/tokio">Tokio</a>, a discord library focused on audio playback with node bindings.</li>
<li><a href="https://github.com/tostc/libDiscordBot/tree/master">libDiscordBot</a>, an easy to use Discord-bot framework.</li>
<li><a href="https://github.com/norrbotten/gwebsocket">gwebsocket</a>, a websocket (lua) module for Garry's Mod</li>
<li><a href="https://github.com/DisCPP/DisCPP">DisCPP</a>, a simple but feature rich Discord API wrapper</li>
<li><a href="https://github.com/luccanunes/discord.cpp">discord.cpp</a>, a discord library for making bots</li>
<li><a href="http://teleportconnect.com/">Teleport</a>, Teleport is your own personal remote robot avatar</li>
</ul>
<h2 id="alternative-libraries">Alternative libraries</h2>
<p>There are plenty of great websocket libraries out there, which might work for you. Here are a couple of serious ones.</p>
<ul>
<li><a href="https://github.com/zaphoyd/websocketpp">websocketpp</a> - C++</li>
<li><a href="https://github.com/boostorg/beast">beast</a> - C++</li>
<li><a href="https://libwebsockets.org/">libwebsockets</a> - C</li>
<li><a href="https://github.com/uNetworking/uWebSockets">µWebSockets</a> - C</li>
<li><a href="https://github.com/tatsuhiro-t/wslay">wslay</a> - C</li>
</ul>
<p><a href="https://github.com/bsergean/uvweb">uvweb</a> is a library written by the IXWebSocket author which is built on top of <a href="https://github.com/skypjack/uvw">uvw</a>, which is a C++ wrapper for <a href="https://libuv.org/">libuv</a>. It has more dependencies and does not support SSL at this point, but it can be used to open multiple connections within a single OS thread thanks to libuv.</p>
<p>To check the performance of a websocket library, you can look at the <a href="https://github.com/bsergean/autoroute">autoroute</a> project.</p>
<h2 id="continuous-integration">Continuous Integration</h2>
<table>
<thead>
<tr>
<th>OS</th>
<th>TLS</th>
<th>Sanitizer</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<tr>
<td>Linux</td>
<td>OpenSSL</td>
<td>None</td>
<td><a href="https://github.com/machinezone/IXWebSocket"><img alt="Build2" src="https://github.com/machinezone/IXWebSocket/workflows/linux/badge.svg" /></a></td>
</tr>
<tr>
<td>macOS</td>
<td>Secure Transport</td>
<td>Thread Sanitizer</td>
<td><a href="https://github.com/machinezone/IXWebSocket"><img alt="Build2" src="https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_sectransport/badge.svg" /></a></td>
</tr>
<tr>
<td>macOS</td>
<td>OpenSSL</td>
<td>Thread Sanitizer</td>
<td><a href="https://github.com/machinezone/IXWebSocket"><img alt="Build2" src="https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_openssl/badge.svg" /></a></td>
</tr>
<tr>
<td>macOS</td>
<td>MbedTLS</td>
<td>Thread Sanitizer</td>
<td><a href="https://github.com/machinezone/IXWebSocket"><img alt="Build2" src="https://github.com/machinezone/IXWebSocket/workflows/mac_tsan_mbedtls/badge.svg" /></a></td>
</tr>
<tr>
<td>Windows</td>
<td>Disabled</td>
<td>None</td>
<td><a href="https://github.com/machinezone/IXWebSocket"><img alt="Build2" src="https://github.com/machinezone/IXWebSocket/workflows/windows/badge.svg" /></a></td>
</tr>
<tr>
<td>UWP</td>
<td>Disabled</td>
<td>None</td>
<td><a href="https://github.com/machinezone/IXWebSocket"><img alt="Build2" src="https://github.com/machinezone/IXWebSocket/workflows/uwp/badge.svg" /></a></td>
</tr>
<tr>
<td>Linux</td>
<td>OpenSSL</td>
<td>Address Sanitizer</td>
<td><a href="https://github.com/machinezone/IXWebSocket"><img alt="Build2" src="https://github.com/machinezone/IXWebSocket/workflows/linux_asan/badge.svg" /></a></td>
</tr>
<tr>
<td>Mingw</td>
<td>Disabled</td>
<td>None</td>
<td><a href="https://github.com/machinezone/IXWebSocket"><img alt="Build2" src="https://github.com/machinezone/IXWebSocket/workflows/unittest_windows_gcc/badge.svg" /></a></td>
</tr>
</tbody>
</table>
<ul>
<li>ASAN fails on Linux because of a known problem, we need a </li>
<li>Some tests are disabled on Windows/UWP because of a pathing problem</li>
<li>TLS and ZLIB are disabled on Windows/UWP because enabling make the CI run takes a lot of time, for setting up vcpkg.</li>
</ul></div>
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</div>
</div>
</div>
</div>
</body>
</html>
<!--
MkDocs version : 1.5.3
Build Date UTC : 2024-03-28 05:13:08.815010+00:00
-->

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@ -1,9 +0,0 @@
@PACKAGE_INIT@
include(CMakeFindDependencyMacro)
if (@USE_ZLIB@)
find_dependency(ZLIB)
endif()
include("${CMAKE_CURRENT_LIST_DIR}/ixwebsocket-targets.cmake")

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@ -1,11 +0,0 @@
prefix=@prefix@
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
Name: ixwebsocket
Description: websocket and http client and server library, with TLS support and very few dependencies
Version: @CMAKE_PROJECT_VERSION@
Libs: -L${libdir} -lixwebsocket
Cflags: -I${includedir}
Requires: @requires@

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@ -1,125 +0,0 @@
#ifndef _MACARON_BASE64_H_
#define _MACARON_BASE64_H_
/**
* The MIT License (MIT)
* Copyright (c) 2016 tomykaira
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <cstdint>
#include <string>
namespace macaron {
class Base64 {
public:
static std::string Encode(const std::string data) {
static constexpr char sEncodingTable[] = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', '+', '/'
};
size_t in_len = data.size();
size_t out_len = 4 * ((in_len + 2) / 3);
std::string ret(out_len, '\0');
size_t i;
char *p = const_cast<char*>(ret.c_str());
for (i = 0; i < in_len - 2; i += 3) {
*p++ = sEncodingTable[(data[i] >> 2) & 0x3F];
*p++ = sEncodingTable[((data[i] & 0x3) << 4) | ((int) (data[i + 1] & 0xF0) >> 4)];
*p++ = sEncodingTable[((data[i + 1] & 0xF) << 2) | ((int) (data[i + 2] & 0xC0) >> 6)];
*p++ = sEncodingTable[data[i + 2] & 0x3F];
}
if (i < in_len) {
*p++ = sEncodingTable[(data[i] >> 2) & 0x3F];
if (i == (in_len - 1)) {
*p++ = sEncodingTable[((data[i] & 0x3) << 4)];
*p++ = '=';
}
else {
*p++ = sEncodingTable[((data[i] & 0x3) << 4) | ((int) (data[i + 1] & 0xF0) >> 4)];
*p++ = sEncodingTable[((data[i + 1] & 0xF) << 2)];
}
*p++ = '=';
}
return ret;
}
static std::string Decode(const std::string& input, std::string& out) {
static constexpr unsigned char kDecodingTable[] = {
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 64, 64,
64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 64,
64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
};
size_t in_len = input.size();
if (in_len % 4 != 0) return "Input data size is not a multiple of 4";
size_t out_len = in_len / 4 * 3;
if (input[in_len - 1] == '=') out_len--;
if (input[in_len - 2] == '=') out_len--;
out.resize(out_len);
for (size_t i = 0, j = 0; i < in_len;) {
uint32_t a = input[i] == '=' ? 0 & i++ : kDecodingTable[static_cast<int>(input[i++])];
uint32_t b = input[i] == '=' ? 0 & i++ : kDecodingTable[static_cast<int>(input[i++])];
uint32_t c = input[i] == '=' ? 0 & i++ : kDecodingTable[static_cast<int>(input[i++])];
uint32_t d = input[i] == '=' ? 0 & i++ : kDecodingTable[static_cast<int>(input[i++])];
uint32_t triple = (a << 3 * 6) + (b << 2 * 6) + (c << 1 * 6) + (d << 0 * 6);
if (j < out_len) out[j++] = (triple >> 2 * 8) & 0xFF;
if (j < out_len) out[j++] = (triple >> 1 * 8) & 0xFF;
if (j < out_len) out[j++] = (triple >> 0 * 8) & 0xFF;
}
return "";
}
};
}
#endif /* _MACARON_BASE64_H_ */

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@ -1,61 +0,0 @@
/*
* 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)
{
reset();
}
Bench::~Bench()
{
if (!_reported)
{
report();
}
}
void Bench::reset()
{
_start = std::chrono::high_resolution_clock::now();
_reported = false;
}
void Bench::report()
{
auto now = std::chrono::high_resolution_clock::now();
auto microseconds = std::chrono::duration_cast<std::chrono::microseconds>(now - _start);
_duration = microseconds.count();
std::cerr << _description << " completed in " << _duration << " us" << std::endl;
setReported();
}
void Bench::record()
{
auto now = std::chrono::high_resolution_clock::now();
auto microseconds = std::chrono::duration_cast<std::chrono::microseconds>(now - _start);
_duration = microseconds.count();
}
void Bench::setReported()
{
_reported = true;
}
uint64_t Bench::getDuration() const
{
return _duration;
}
} // namespace ix

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/*
* IXBench.h
* Author: Benjamin Sergeant
* Copyright (c) 2017-2020 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <chrono>
#include <cstdint>
#include <string>
namespace ix
{
class Bench
{
public:
Bench(const std::string& description);
~Bench();
void reset();
void record();
void report();
void setReported();
uint64_t getDuration() const;
private:
std::string _description;
std::chrono::time_point<std::chrono::high_resolution_clock> _start;
uint64_t _duration;
bool _reported;
};
} // namespace ix

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/*
* IXCancellationRequest.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#include "IXCancellationRequest.h"
#include <cassert>
#include <chrono>
namespace ix
{
CancellationRequest makeCancellationRequestWithTimeout(
int secs, std::atomic<bool>& requestInitCancellation)
{
assert(secs > 0);
auto start = std::chrono::system_clock::now();
auto timeout = std::chrono::seconds(secs);
auto isCancellationRequested = [&requestInitCancellation, start, timeout]() -> bool {
// Was an explicit cancellation requested ?
if (requestInitCancellation) return true;
auto now = std::chrono::system_clock::now();
if ((now - start) > timeout) return true;
// No cancellation request
return false;
};
return isCancellationRequested;
}
} // namespace ix

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/*
* IXCancellationRequest.h
* Author: Benjamin Sergeant
* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <atomic>
#include <functional>
namespace ix
{
using CancellationRequest = std::function<bool()>;
CancellationRequest makeCancellationRequestWithTimeout(
int seconds, std::atomic<bool>& requestInitCancellation);
} // namespace ix

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@ -1,73 +0,0 @@
/*
* IXConnectionState.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#include "IXConnectionState.h"
namespace ix
{
std::atomic<uint64_t> ConnectionState::_globalId(0);
ConnectionState::ConnectionState()
: _terminated(false)
{
computeId();
}
void ConnectionState::computeId()
{
_id = std::to_string(_globalId++);
}
const std::string& ConnectionState::getId() const
{
return _id;
}
std::shared_ptr<ConnectionState> ConnectionState::createConnectionState()
{
return std::make_shared<ConnectionState>();
}
void ConnectionState::setOnSetTerminatedCallback(const OnSetTerminatedCallback& callback)
{
_onSetTerminatedCallback = callback;
}
bool ConnectionState::isTerminated() const
{
return _terminated;
}
void ConnectionState::setTerminated()
{
_terminated = true;
if (_onSetTerminatedCallback)
{
_onSetTerminatedCallback();
}
}
const std::string& ConnectionState::getRemoteIp()
{
return _remoteIp;
}
int ConnectionState::getRemotePort()
{
return _remotePort;
}
void ConnectionState::setRemoteIp(const std::string& remoteIp)
{
_remoteIp = remoteIp;
}
void ConnectionState::setRemotePort(int remotePort)
{
_remotePort = remotePort;
}
} // namespace ix

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@ -1,54 +0,0 @@
/*
* IXConnectionState.h
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <atomic>
#include <cstdint>
#include <functional>
#include <memory>
#include <string>
namespace ix
{
using OnSetTerminatedCallback = std::function<void()>;
class ConnectionState
{
public:
ConnectionState();
virtual ~ConnectionState() = default;
virtual void computeId();
virtual const std::string& getId() const;
void setTerminated();
bool isTerminated() const;
const std::string& getRemoteIp();
int getRemotePort();
static std::shared_ptr<ConnectionState> createConnectionState();
private:
void setOnSetTerminatedCallback(const OnSetTerminatedCallback& callback);
void setRemoteIp(const std::string& remoteIp);
void setRemotePort(int remotePort);
protected:
std::atomic<bool> _terminated;
std::string _id;
OnSetTerminatedCallback _onSetTerminatedCallback;
static std::atomic<uint64_t> _globalId;
std::string _remoteIp;
int _remotePort;
friend class SocketServer;
};
} // namespace ix

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@ -1,201 +0,0 @@
/*
* IXDNSLookup.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
*/
//
// On Windows Universal Platform (uwp), gai_strerror defaults behavior is to returns wchar_t
// which is different from all other platforms. We want the non unicode version.
// See https://github.com/microsoft/vcpkg/pull/11030
// We could do this in IXNetSystem.cpp but so far we are only using gai_strerror in here.
//
#ifdef _UNICODE
#undef _UNICODE
#endif
#ifdef UNICODE
#undef UNICODE
#endif
#include "IXDNSLookup.h"
#include "IXNetSystem.h"
#include <chrono>
#include <string.h>
#include <thread>
#include <utility>
// mingw build quirks
#if defined(_WIN32) && defined(__GNUC__)
#ifndef AI_NUMERICSERV
#define AI_NUMERICSERV NI_NUMERICSERV
#endif
#ifndef AI_ADDRCONFIG
#define AI_ADDRCONFIG LUP_ADDRCONFIG
#endif
#endif
#ifdef __APPLE__
#ifndef AI_NUMERICSERV
#define AI_NUMERICSERV 0
#endif
#endif
namespace ix
{
const int64_t DNSLookup::kDefaultWait = 1; // ms
DNSLookup::DNSLookup(const std::string& hostname, int port, int64_t wait)
: _hostname(hostname)
, _port(port)
, _wait(wait)
, _res(nullptr)
, _done(false)
{
;
}
DNSLookup::AddrInfoPtr DNSLookup::getAddrInfo(const std::string& hostname,
int port,
std::string& errMsg)
{
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_ADDRCONFIG | AI_NUMERICSERV;
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
std::string sport = std::to_string(port);
struct addrinfo* res;
int getaddrinfo_result = getaddrinfo(hostname.c_str(), sport.c_str(), &hints, &res);
if (getaddrinfo_result)
{
errMsg = gai_strerror(getaddrinfo_result);
res = nullptr;
}
return AddrInfoPtr{ res, freeaddrinfo };
}
DNSLookup::AddrInfoPtr DNSLookup::resolve(std::string& errMsg,
const CancellationRequest& isCancellationRequested,
bool cancellable)
{
return cancellable ? resolveCancellable(errMsg, isCancellationRequested)
: resolveUnCancellable(errMsg, isCancellationRequested);
}
DNSLookup::AddrInfoPtr DNSLookup::resolveUnCancellable(
std::string& errMsg, const CancellationRequest& isCancellationRequested)
{
errMsg = "no error";
// Maybe a cancellation request got in before the background thread terminated ?
if (isCancellationRequested())
{
errMsg = "cancellation requested";
return nullptr;
}
return getAddrInfo(_hostname, _port, errMsg);
}
DNSLookup::AddrInfoPtr DNSLookup::resolveCancellable(
std::string& errMsg, const CancellationRequest& isCancellationRequested)
{
errMsg = "no error";
// Can only be called once, otherwise we would have to manage a pool
// of background thread which is overkill for our usage.
if (_done)
{
return nullptr; // programming error, create a second DNSLookup instance
// if you need a second lookup.
}
//
// Good resource on thread forced termination
// https://www.bo-yang.net/2017/11/19/cpp-kill-detached-thread
//
auto ptr = shared_from_this();
std::weak_ptr<DNSLookup> self(ptr);
int port = _port;
std::string hostname(_hostname);
// We make the background thread doing the work a shared pointer
// instead of a member variable, because it can keep running when
// this object goes out of scope, in case of cancellation
auto t = std::make_shared<std::thread>(&DNSLookup::run, this, self, hostname, port);
t->detach();
while (!_done)
{
// Wait for 1 milliseconds, to see if the bg thread has terminated.
// We do not use a condition variable to wait, as destroying this one
// if the bg thread is alive can cause undefined behavior.
std::this_thread::sleep_for(std::chrono::milliseconds(_wait));
// Were we cancelled ?
if (isCancellationRequested())
{
errMsg = "cancellation requested";
return nullptr;
}
}
// Maybe a cancellation request got in before the bg terminated ?
if (isCancellationRequested())
{
errMsg = "cancellation requested";
return nullptr;
}
errMsg = getErrMsg();
return getRes();
}
void DNSLookup::run(std::weak_ptr<DNSLookup> self,
std::string hostname,
int port) // thread runner
{
// We don't want to read or write into members variables of an object that could be
// gone, so we use temporary variables (res) or we pass in by copy everything that
// getAddrInfo needs to work.
std::string errMsg;
auto res = getAddrInfo(hostname, port, errMsg);
if (auto lock = self.lock())
{
// Copy result into the member variables
setRes(res);
setErrMsg(errMsg);
_done = true;
}
}
void DNSLookup::setErrMsg(const std::string& errMsg)
{
std::lock_guard<std::mutex> lock(_errMsgMutex);
_errMsg = errMsg;
}
const std::string& DNSLookup::getErrMsg()
{
std::lock_guard<std::mutex> lock(_errMsgMutex);
return _errMsg;
}
void DNSLookup::setRes(DNSLookup::AddrInfoPtr addr)
{
std::lock_guard<std::mutex> lock(_resMutex);
_res = std::move(addr);
}
DNSLookup::AddrInfoPtr DNSLookup::getRes()
{
std::lock_guard<std::mutex> lock(_resMutex);
return _res;
}
} // namespace ix

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/*
* IXDNSLookup.h
* Author: Benjamin Sergeant
* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
*
* Resolve a hostname+port to a struct addrinfo obtained with getaddrinfo
* Does this in a background thread so that it can be cancelled, since
* getaddrinfo is a blocking call, and we don't want to block the main thread on Mobile.
*/
#pragma once
#include "IXCancellationRequest.h"
#include <atomic>
#include <cstdint>
#include <memory>
#include <mutex>
#include <set>
#include <string>
struct addrinfo;
namespace ix
{
class DNSLookup : public std::enable_shared_from_this<DNSLookup>
{
public:
using AddrInfoPtr = std::shared_ptr<addrinfo>;
DNSLookup(const std::string& hostname, int port, int64_t wait = DNSLookup::kDefaultWait);
~DNSLookup() = default;
AddrInfoPtr resolve(std::string& errMsg,
const CancellationRequest& isCancellationRequested,
bool cancellable = true);
private:
AddrInfoPtr resolveCancellable(std::string& errMsg,
const CancellationRequest& isCancellationRequested);
AddrInfoPtr resolveUnCancellable(std::string& errMsg,
const CancellationRequest& isCancellationRequested);
AddrInfoPtr getAddrInfo(const std::string& hostname,
int port,
std::string& errMsg);
void run(std::weak_ptr<DNSLookup> self, std::string hostname, int port); // thread runner
void setErrMsg(const std::string& errMsg);
const std::string& getErrMsg();
void setRes(AddrInfoPtr addr);
AddrInfoPtr getRes();
std::string _hostname;
int _port;
int64_t _wait;
const static int64_t kDefaultWait;
AddrInfoPtr _res;
std::mutex _resMutex;
std::string _errMsg;
std::mutex _errMsgMutex;
std::atomic<bool> _done;
};
} // namespace ix

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/*
* IXExponentialBackoff.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2017-2019 Machine Zone, Inc. All rights reserved.
*/
#include "IXExponentialBackoff.h"
#include <cmath>
namespace ix
{
uint32_t calculateRetryWaitMilliseconds(uint32_t retryCount,
uint32_t maxWaitBetweenReconnectionRetries,
uint32_t minWaitBetweenReconnectionRetries)
{
// It's easy with a power function to go beyond 2^32, and then
// have unexpected results, so prepare for that
const uint32_t maxRetryCountWithoutOverflow = 26;
uint32_t waitTime = 0;
if (retryCount < maxRetryCountWithoutOverflow)
{
waitTime = std::pow(2, retryCount) * 100;
}
if (waitTime < minWaitBetweenReconnectionRetries)
{
waitTime = minWaitBetweenReconnectionRetries;
}
if (waitTime > maxWaitBetweenReconnectionRetries)
{
waitTime = maxWaitBetweenReconnectionRetries;
}
if (retryCount >= maxRetryCountWithoutOverflow)
{
waitTime = maxWaitBetweenReconnectionRetries;
}
return waitTime;
}
} // namespace ix

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/*
* IXExponentialBackoff.h
* Author: Benjamin Sergeant
* Copyright (c) 2017-2019 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <cstdint>
namespace ix
{
uint32_t calculateRetryWaitMilliseconds(uint32_t retryCount,
uint32_t maxWaitBetweenReconnectionRetries,
uint32_t minWaitBetweenReconnectionRetries);
} // namespace ix

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@ -1,97 +0,0 @@
/*
* IXGetFreePort.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone. All rights reserved.
*/
// Using inet_addr will trigger an error on uwp without this
// FIXME: use a different api
#ifdef _WIN32
#ifndef _WINSOCK_DEPRECATED_NO_WARNINGS
#define _WINSOCK_DEPRECATED_NO_WARNINGS
#endif
#endif
#include "IXGetFreePort.h"
#include <ixwebsocket/IXNetSystem.h>
#include <ixwebsocket/IXSocket.h>
#include <random>
#include <string>
namespace ix
{
int getAnyFreePortRandom()
{
std::random_device rd;
std::uniform_int_distribution<int> dist(1024 + 1, 65535);
return dist(rd);
}
int getAnyFreePort()
{
socket_t sockfd;
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
return getAnyFreePortRandom();
}
int enable = 1;
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char*) &enable, sizeof(enable)) < 0)
{
return getAnyFreePortRandom();
}
// Bind to port 0. This is the standard way to get a free port.
struct sockaddr_in server; // server address information
server.sin_family = AF_INET;
server.sin_port = htons(0);
server.sin_addr.s_addr = inet_addr("127.0.0.1");
if (bind(sockfd, (struct sockaddr*) &server, sizeof(server)) < 0)
{
Socket::closeSocket(sockfd);
return getAnyFreePortRandom();
}
struct sockaddr_in sa; // server address information
socklen_t len = sizeof(sa);
if (getsockname(sockfd, (struct sockaddr*) &sa, &len) < 0)
{
Socket::closeSocket(sockfd);
return getAnyFreePortRandom();
}
int port = ntohs(sa.sin_port);
Socket::closeSocket(sockfd);
return port;
}
int getFreePort()
{
while (true)
{
#if defined(__has_feature)
#if __has_feature(address_sanitizer)
int port = getAnyFreePortRandom();
#else
int port = getAnyFreePort();
#endif
#else
int port = getAnyFreePort();
#endif
//
// Only port above 1024 can be used by non root users, but for some
// reason I got port 7 returned with macOS when binding on port 0...
//
if (port > 1024)
{
return port;
}
}
return -1;
}
} // namespace ix

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/*
* IXGetFreePort.h
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone. All rights reserved.
*/
#pragma once
namespace ix
{
int getFreePort();
} // namespace ix

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/*
* IXGzipCodec.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
*/
#include "IXGzipCodec.h"
#include "IXBench.h"
#include <array>
#include <string.h>
#ifdef IXWEBSOCKET_USE_ZLIB
#include <zlib.h>
#endif
namespace ix
{
std::string gzipCompress(const std::string& str)
{
#ifndef IXWEBSOCKET_USE_ZLIB
return std::string();
#else
z_stream zs; // z_stream is zlib's control structure
memset(&zs, 0, sizeof(zs));
// deflateInit2 configure the file format: request gzip instead of deflate
const int windowBits = 15;
const int GZIP_ENCODING = 16;
deflateInit2(&zs,
Z_DEFAULT_COMPRESSION,
Z_DEFLATED,
windowBits | GZIP_ENCODING,
8,
Z_DEFAULT_STRATEGY);
zs.next_in = (Bytef*) str.data();
zs.avail_in = (uInt) str.size(); // set the z_stream's input
int ret;
char outbuffer[32768];
std::string outstring;
// retrieve the compressed bytes blockwise
do
{
zs.next_out = reinterpret_cast<Bytef*>(outbuffer);
zs.avail_out = sizeof(outbuffer);
ret = deflate(&zs, Z_FINISH);
if (outstring.size() < zs.total_out)
{
// append the block to the output string
outstring.append(outbuffer, zs.total_out - outstring.size());
}
} while (ret == Z_OK);
deflateEnd(&zs);
return outstring;
#endif // IXWEBSOCKET_USE_ZLIB
}
#ifdef IXWEBSOCKET_USE_DEFLATE
static uint32_t loadDecompressedGzipSize(const uint8_t* p)
{
return ((uint32_t) p[0] << 0) | ((uint32_t) p[1] << 8) | ((uint32_t) p[2] << 16) |
((uint32_t) p[3] << 24);
}
#endif
bool gzipDecompress(const std::string& in, std::string& out)
{
#ifndef IXWEBSOCKET_USE_ZLIB
return false;
#else
z_stream inflateState;
memset(&inflateState, 0, sizeof(inflateState));
inflateState.zalloc = Z_NULL;
inflateState.zfree = Z_NULL;
inflateState.opaque = Z_NULL;
inflateState.avail_in = 0;
inflateState.next_in = Z_NULL;
if (inflateInit2(&inflateState, 16 + MAX_WBITS) != Z_OK)
{
return false;
}
inflateState.avail_in = (uInt) in.size();
inflateState.next_in = (unsigned char*) (const_cast<char*>(in.data()));
const int kBufferSize = 1 << 14;
std::array<unsigned char, kBufferSize> compressBuffer;
do
{
inflateState.avail_out = (uInt) kBufferSize;
inflateState.next_out = &compressBuffer.front();
int ret = inflate(&inflateState, Z_SYNC_FLUSH);
if (ret == Z_NEED_DICT || ret == Z_DATA_ERROR || ret == Z_MEM_ERROR)
{
inflateEnd(&inflateState);
return false;
}
out.append(reinterpret_cast<char*>(&compressBuffer.front()),
kBufferSize - inflateState.avail_out);
} while (inflateState.avail_out == 0);
inflateEnd(&inflateState);
return true;
#endif // IXWEBSOCKET_USE_ZLIB
}
} // namespace ix

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/*
* IXGzipCodec.h
* Author: Benjamin Sergeant
* Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <string>
namespace ix
{
std::string gzipCompress(const std::string& str);
bool gzipDecompress(const std::string& in, std::string& out);
} // namespace ix

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/*
* IXHttp.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#include "IXHttp.h"
#include "IXCancellationRequest.h"
#include "IXGzipCodec.h"
#include "IXSocket.h"
#include <sstream>
#include <vector>
namespace ix
{
std::string Http::trim(const std::string& str)
{
std::string out;
for (auto c : str)
{
if (c != ' ' && c != '\n' && c != '\r')
{
out += c;
}
}
return out;
}
std::pair<std::string, int> Http::parseStatusLine(const std::string& line)
{
// Request-Line = Method SP Request-URI SP HTTP-Version CRLF
std::string token;
std::stringstream tokenStream(line);
std::vector<std::string> tokens;
// Split by ' '
while (std::getline(tokenStream, token, ' '))
{
tokens.push_back(token);
}
std::string httpVersion;
if (tokens.size() >= 1)
{
httpVersion = trim(tokens[0]);
}
int statusCode = -1;
if (tokens.size() >= 2)
{
std::stringstream ss;
ss << trim(tokens[1]);
ss >> statusCode;
}
return std::make_pair(httpVersion, statusCode);
}
std::tuple<std::string, std::string, std::string> Http::parseRequestLine(
const std::string& line)
{
// Request-Line = Method SP Request-URI SP HTTP-Version CRLF
std::string token;
std::stringstream tokenStream(line);
std::vector<std::string> tokens;
// Split by ' '
while (std::getline(tokenStream, token, ' '))
{
tokens.push_back(token);
}
std::string method;
if (tokens.size() >= 1)
{
method = trim(tokens[0]);
}
std::string requestUri;
if (tokens.size() >= 2)
{
requestUri = trim(tokens[1]);
}
std::string httpVersion;
if (tokens.size() >= 3)
{
httpVersion = trim(tokens[2]);
}
return std::make_tuple(method, requestUri, httpVersion);
}
std::tuple<bool, std::string, HttpRequestPtr> Http::parseRequest(
std::unique_ptr<Socket>& socket, int timeoutSecs)
{
HttpRequestPtr httpRequest;
std::atomic<bool> requestInitCancellation(false);
auto isCancellationRequested =
makeCancellationRequestWithTimeout(timeoutSecs, requestInitCancellation);
// Read first line
auto lineResult = socket->readLine(isCancellationRequested);
auto lineValid = lineResult.first;
auto line = lineResult.second;
if (!lineValid)
{
return std::make_tuple(false, "Error reading HTTP request line", httpRequest);
}
// Parse request line (GET /foo HTTP/1.1\r\n)
auto requestLine = Http::parseRequestLine(line);
auto method = std::get<0>(requestLine);
auto uri = std::get<1>(requestLine);
auto httpVersion = std::get<2>(requestLine);
// Retrieve and validate HTTP headers
auto result = parseHttpHeaders(socket, isCancellationRequested);
auto headersValid = result.first;
auto headers = result.second;
if (!headersValid)
{
return std::make_tuple(false, "Error parsing HTTP headers", httpRequest);
}
std::string body;
if (headers.find("Content-Length") != headers.end())
{
int contentLength = 0;
{
const char* p = headers["Content-Length"].c_str();
char* p_end{};
errno = 0;
long val = std::strtol(p, &p_end, 10);
if (p_end == p // invalid argument
|| errno == ERANGE // out of range
|| val < std::numeric_limits<int>::min()
|| val > std::numeric_limits<int>::max()) {
return std::make_tuple(
false, "Error parsing HTTP Header 'Content-Length'", httpRequest);
}
contentLength = val;
}
if (contentLength < 0)
{
return std::make_tuple(
false, "Error: 'Content-Length' should be a positive integer", httpRequest);
}
auto res = socket->readBytes(contentLength, nullptr, nullptr, isCancellationRequested);
if (!res.first)
{
return std::make_tuple(
false, std::string("Error reading request: ") + res.second, httpRequest);
}
body = res.second;
}
// If the content was compressed with gzip, decode it
if (headers["Content-Encoding"] == "gzip")
{
#ifdef IXWEBSOCKET_USE_ZLIB
std::string decompressedPayload;
if (!gzipDecompress(body, decompressedPayload))
{
return std::make_tuple(
false, std::string("Error during gzip decompression of the body"), httpRequest);
}
body = decompressedPayload;
#else
std::string errorMsg("ixwebsocket was not compiled with gzip support on");
return std::make_tuple(false, errorMsg, httpRequest);
#endif
}
httpRequest = std::make_shared<HttpRequest>(uri, method, httpVersion, body, headers);
return std::make_tuple(true, "", httpRequest);
}
bool Http::sendResponse(HttpResponsePtr response, std::unique_ptr<Socket>& socket)
{
// Write the response to the socket
std::stringstream ss;
ss << "HTTP/1.1 ";
ss << response->statusCode;
ss << " ";
ss << response->description;
ss << "\r\n";
if (!socket->writeBytes(ss.str(), nullptr))
{
return false;
}
// Write headers
ss.str("");
ss << "Content-Length: " << response->body.size() << "\r\n";
for (auto&& it : response->headers)
{
ss << it.first << ": " << it.second << "\r\n";
}
ss << "\r\n";
if (!socket->writeBytes(ss.str(), nullptr))
{
return false;
}
return response->body.empty() ? true : socket->writeBytes(response->body, nullptr);
}
} // namespace ix

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/*
* IXHttp.h
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include "IXProgressCallback.h"
#include "IXWebSocketHttpHeaders.h"
#include <atomic>
#include <cstdint>
#include <tuple>
#include <unordered_map>
namespace ix
{
enum class HttpErrorCode : int
{
Ok = 0,
CannotConnect = 1,
Timeout = 2,
Gzip = 3,
UrlMalformed = 4,
CannotCreateSocket = 5,
SendError = 6,
ReadError = 7,
CannotReadStatusLine = 8,
MissingStatus = 9,
HeaderParsingError = 10,
MissingLocation = 11,
TooManyRedirects = 12,
ChunkReadError = 13,
CannotReadBody = 14,
Cancelled = 15,
Invalid = 100
};
struct HttpResponse
{
int statusCode;
std::string description;
HttpErrorCode errorCode;
WebSocketHttpHeaders headers;
std::string body;
std::string errorMsg;
uint64_t uploadSize;
uint64_t downloadSize;
HttpResponse(int s = 0,
const std::string& des = std::string(),
const HttpErrorCode& c = HttpErrorCode::Ok,
const WebSocketHttpHeaders& h = WebSocketHttpHeaders(),
const std::string& b = std::string(),
const std::string& e = std::string(),
uint64_t u = 0,
uint64_t d = 0)
: statusCode(s)
, description(des)
, errorCode(c)
, headers(h)
, body(b)
, errorMsg(e)
, uploadSize(u)
, downloadSize(d)
{
;
}
};
using HttpResponsePtr = std::shared_ptr<HttpResponse>;
using HttpParameters = std::unordered_map<std::string, std::string>;
using HttpFormDataParameters = std::unordered_map<std::string, std::string>;
using Logger = std::function<void(const std::string&)>;
using OnResponseCallback = std::function<void(const HttpResponsePtr&)>;
struct HttpRequestArgs
{
std::string url;
std::string verb;
WebSocketHttpHeaders extraHeaders;
std::string body;
std::string multipartBoundary;
int connectTimeout = 60;
int transferTimeout = 1800;
bool followRedirects = true;
int maxRedirects = 5;
bool verbose = false;
bool compress = true;
bool compressRequest = false;
Logger logger;
OnProgressCallback onProgressCallback;
OnChunkCallback onChunkCallback;
std::atomic<bool> cancel;
};
using HttpRequestArgsPtr = std::shared_ptr<HttpRequestArgs>;
struct HttpRequest
{
std::string uri;
std::string method;
std::string version;
std::string body;
WebSocketHttpHeaders headers;
HttpRequest(const std::string& u,
const std::string& m,
const std::string& v,
const std::string& b,
const WebSocketHttpHeaders& h = WebSocketHttpHeaders())
: uri(u)
, method(m)
, version(v)
, body(b)
, headers(h)
{
}
};
using HttpRequestPtr = std::shared_ptr<HttpRequest>;
class Http
{
public:
static std::tuple<bool, std::string, HttpRequestPtr> parseRequest(
std::unique_ptr<Socket>& socket, int timeoutSecs);
static bool sendResponse(HttpResponsePtr response, std::unique_ptr<Socket>& socket);
static std::pair<std::string, int> parseStatusLine(const std::string& line);
static std::tuple<std::string, std::string, std::string> parseRequestLine(
const std::string& line);
static std::string trim(const std::string& str);
};
} // namespace ix

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/*
* IXHttpClient.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#include "IXHttpClient.h"
#include "IXGzipCodec.h"
#include "IXSocketFactory.h"
#include "IXUrlParser.h"
#include "IXUserAgent.h"
#include "IXWebSocketHttpHeaders.h"
#include <assert.h>
#include <cstdint>
#include <cstring>
#include <iomanip>
#include <random>
#include <sstream>
#include <vector>
namespace ix
{
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods
const std::string HttpClient::kPost = "POST";
const std::string HttpClient::kGet = "GET";
const std::string HttpClient::kHead = "HEAD";
const std::string HttpClient::kDelete = "DELETE";
const std::string HttpClient::kPut = "PUT";
const std::string HttpClient::kPatch = "PATCH";
HttpClient::HttpClient(bool async)
: _async(async)
, _stop(false)
, _forceBody(false)
{
if (!_async) return;
_thread = std::thread(&HttpClient::run, this);
}
HttpClient::~HttpClient()
{
if (!_thread.joinable()) return;
_stop = true;
_condition.notify_one();
_thread.join();
}
void HttpClient::setTLSOptions(const SocketTLSOptions& tlsOptions)
{
_tlsOptions = tlsOptions;
}
void HttpClient::setForceBody(bool value)
{
_forceBody = value;
}
HttpRequestArgsPtr HttpClient::createRequest(const std::string& url, const std::string& verb)
{
auto request = std::make_shared<HttpRequestArgs>();
request->url = url;
request->verb = verb;
return request;
}
bool HttpClient::performRequest(HttpRequestArgsPtr args,
const OnResponseCallback& onResponseCallback)
{
assert(_async && "HttpClient needs its async parameter set to true "
"in order to call performRequest");
if (!_async) return false;
// Enqueue the task
{
// acquire lock
std::unique_lock<std::mutex> lock(_queueMutex);
// add the task
_queue.push(std::make_pair(args, onResponseCallback));
} // release lock
// wake up one thread
_condition.notify_one();
return true;
}
void HttpClient::run()
{
while (true)
{
HttpRequestArgsPtr args;
OnResponseCallback onResponseCallback;
{
std::unique_lock<std::mutex> lock(_queueMutex);
while (!_stop && _queue.empty())
{
_condition.wait(lock);
}
if (_stop) return;
auto p = _queue.front();
_queue.pop();
args = p.first;
onResponseCallback = p.second;
}
if (_stop) return;
HttpResponsePtr response = request(args->url, args->verb, args->body, args);
onResponseCallback(response);
if (_stop) return;
}
}
HttpResponsePtr HttpClient::request(const std::string& url,
const std::string& verb,
const std::string& body,
HttpRequestArgsPtr args,
int redirects)
{
// We only have one socket connection, so we cannot
// make multiple requests concurrently.
std::lock_guard<std::recursive_mutex> lock(_mutex);
uint64_t uploadSize = 0;
uint64_t downloadSize = 0;
int code = 0;
WebSocketHttpHeaders headers;
std::string payload;
std::string description;
std::string protocol, host, path, query;
int port;
bool isProtocolDefaultPort;
if (!UrlParser::parse(url, protocol, host, path, query, port, isProtocolDefaultPort))
{
std::stringstream ss;
ss << "Cannot parse url: " << url;
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::UrlMalformed,
headers,
payload,
ss.str(),
uploadSize,
downloadSize);
}
bool tls = protocol == "https";
std::string errorMsg;
_socket = createSocket(tls, -1, errorMsg, _tlsOptions);
if (!_socket)
{
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::CannotCreateSocket,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
// Build request string
std::stringstream ss;
ss << verb << " " << path << " HTTP/1.1\r\n";
ss << "Host: " << host;
if (!isProtocolDefaultPort)
{
ss << ":" << port;
}
ss << "\r\n";
#ifdef IXWEBSOCKET_USE_ZLIB
if (args->compress && !args->onChunkCallback)
{
ss << "Accept-Encoding: gzip"
<< "\r\n";
}
#endif
// Append extra headers
for (auto&& it : args->extraHeaders)
{
ss << it.first << ": " << it.second << "\r\n";
}
// Set a default Accept header if none is present
if (args->extraHeaders.find("Accept") == args->extraHeaders.end())
{
ss << "Accept: */*"
<< "\r\n";
}
// Set a default User agent if none is present
if (args->extraHeaders.find("User-Agent") == args->extraHeaders.end())
{
ss << "User-Agent: " << userAgent() << "\r\n";
}
// Set an origin header if missing
if (args->extraHeaders.find("Origin") == args->extraHeaders.end())
{
ss << "Origin: " << protocol << "://" << host << ":" << port << "\r\n";
}
if (verb == kPost || verb == kPut || verb == kPatch || _forceBody)
{
// Set request compression header
#ifdef IXWEBSOCKET_USE_ZLIB
if (args->compressRequest)
{
ss << "Content-Encoding: gzip"
<< "\r\n";
}
#endif
ss << "Content-Length: " << body.size() << "\r\n";
// Set default Content-Type if unspecified
if (args->extraHeaders.find("Content-Type") == args->extraHeaders.end())
{
if (args->multipartBoundary.empty())
{
ss << "Content-Type: application/x-www-form-urlencoded"
<< "\r\n";
}
else
{
ss << "Content-Type: multipart/form-data; boundary=" << args->multipartBoundary
<< "\r\n";
}
}
ss << "\r\n";
ss << body;
}
else
{
ss << "\r\n";
}
std::string req(ss.str());
std::string errMsg;
// Make a cancellation object dealing with connection timeout
auto cancelled = makeCancellationRequestWithTimeout(args->connectTimeout, args->cancel);
auto isCancellationRequested = [&]() {
return cancelled() || _stop;
};
bool success = _socket->connect(host, port, errMsg, isCancellationRequested);
if (!success)
{
auto errorCode = args->cancel ? HttpErrorCode::Cancelled : HttpErrorCode::CannotConnect;
std::stringstream ss;
ss << "Cannot connect to url: " << url << " / error : " << errMsg;
return std::make_shared<HttpResponse>(code,
description,
errorCode,
headers,
payload,
ss.str(),
uploadSize,
downloadSize);
}
// Make a new cancellation object dealing with transfer timeout
cancelled = makeCancellationRequestWithTimeout(args->transferTimeout, args->cancel);
if (args->verbose)
{
std::stringstream ss;
ss << "Sending " << verb << " request "
<< "to " << host << ":" << port << std::endl
<< "request size: " << req.size() << " bytes" << std::endl
<< "=============" << std::endl
<< req << "=============" << std::endl
<< std::endl;
log(ss.str(), args);
}
if (!_socket->writeBytes(req, isCancellationRequested))
{
auto errorCode = args->cancel ? HttpErrorCode::Cancelled : HttpErrorCode::SendError;
std::string errorMsg("Cannot send request");
return std::make_shared<HttpResponse>(code,
description,
errorCode,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
uploadSize = req.size();
auto lineResult = _socket->readLine(isCancellationRequested);
auto lineValid = lineResult.first;
auto line = lineResult.second;
if (!lineValid)
{
auto errorCode = args->cancel ? HttpErrorCode::Cancelled : HttpErrorCode::CannotReadStatusLine;
std::string errorMsg("Cannot retrieve status line");
return std::make_shared<HttpResponse>(code,
description,
errorCode,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
if (args->verbose)
{
std::stringstream ss;
ss << "Status line " << line;
log(ss.str(), args);
}
if (sscanf(line.c_str(), "HTTP/1.1 %d", &code) != 1)
{
std::string errorMsg("Cannot parse response code from status line");
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::MissingStatus,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
auto result = parseHttpHeaders(_socket, isCancellationRequested);
auto headersValid = result.first;
headers = result.second;
if (!headersValid)
{
auto errorCode = args->cancel ? HttpErrorCode::Cancelled : HttpErrorCode::HeaderParsingError;
std::string errorMsg("Cannot parse http headers");
return std::make_shared<HttpResponse>(code,
description,
errorCode,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
// Redirect ?
if ((code >= 301 && code <= 308) && args->followRedirects)
{
if (headers.find("Location") == headers.end())
{
std::string errorMsg("Missing location header for redirect");
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::MissingLocation,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
if (redirects >= args->maxRedirects)
{
std::stringstream ss;
ss << "Too many redirects: " << redirects;
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::TooManyRedirects,
headers,
payload,
ss.str(),
uploadSize,
downloadSize);
}
// Recurse
std::string location = headers["Location"];
return request(location, verb, body, args, redirects + 1);
}
if (verb == "HEAD")
{
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::Ok,
headers,
payload,
std::string(),
uploadSize,
downloadSize);
}
// Parse response:
if (headers.find("Content-Length") != headers.end())
{
ssize_t contentLength = -1;
ss.str("");
ss << headers["Content-Length"];
ss >> contentLength;
auto chunkResult = _socket->readBytes(contentLength,
args->onProgressCallback,
args->onChunkCallback,
isCancellationRequested);
if (!chunkResult.first)
{
auto errorCode = args->cancel ? HttpErrorCode::Cancelled : HttpErrorCode::ChunkReadError;
errorMsg = "Cannot read chunk";
return std::make_shared<HttpResponse>(code,
description,
errorCode,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
if (!args->onChunkCallback)
{
payload.reserve(contentLength);
payload += chunkResult.second;
}
}
else if (headers.find("Transfer-Encoding") != headers.end() &&
headers["Transfer-Encoding"] == "chunked")
{
std::stringstream ss;
while (true)
{
auto errorCode = args->cancel ? HttpErrorCode::Cancelled : HttpErrorCode::ChunkReadError;
lineResult = _socket->readLine(isCancellationRequested);
line = lineResult.second;
if (!lineResult.first)
{
return std::make_shared<HttpResponse>(code,
description,
errorCode,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
uint64_t chunkSize;
ss.str("");
ss << std::hex << line;
ss >> chunkSize;
if (args->verbose)
{
std::stringstream oss;
oss << "Reading " << chunkSize << " bytes" << std::endl;
log(oss.str(), args);
}
// Read a chunk
auto chunkResult = _socket->readBytes((size_t) chunkSize,
args->onProgressCallback,
args->onChunkCallback,
isCancellationRequested);
if (!chunkResult.first)
{
auto errorCode = args->cancel ? HttpErrorCode::Cancelled : HttpErrorCode::ChunkReadError;
errorMsg = "Cannot read chunk";
return std::make_shared<HttpResponse>(code,
description,
errorCode,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
if (!args->onChunkCallback)
{
payload.reserve(payload.size() + (size_t) chunkSize);
payload += chunkResult.second;
}
// Read the line that terminates the chunk (\r\n)
lineResult = _socket->readLine(isCancellationRequested);
if (!lineResult.first)
{
auto errorCode = args->cancel ? HttpErrorCode::Cancelled : HttpErrorCode::ChunkReadError;
return std::make_shared<HttpResponse>(code,
description,
errorCode,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
if (chunkSize == 0) break;
}
}
else if (code == 204)
{
; // 204 is NoContent response code
}
else
{
std::string errorMsg("Cannot read http body");
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::CannotReadBody,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
downloadSize = payload.size();
// If the content was compressed with gzip, decode it
if (headers["Content-Encoding"] == "gzip")
{
#ifdef IXWEBSOCKET_USE_ZLIB
std::string decompressedPayload;
if (!gzipDecompress(payload, decompressedPayload))
{
std::string errorMsg("Error decompressing payload");
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::Gzip,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
}
payload = decompressedPayload;
#else
std::string errorMsg("ixwebsocket was not compiled with gzip support on");
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::Gzip,
headers,
payload,
errorMsg,
uploadSize,
downloadSize);
#endif
}
return std::make_shared<HttpResponse>(code,
description,
HttpErrorCode::Ok,
headers,
payload,
std::string(),
uploadSize,
downloadSize);
}
HttpResponsePtr HttpClient::get(const std::string& url, HttpRequestArgsPtr args)
{
return request(url, kGet, std::string(), args);
}
HttpResponsePtr HttpClient::head(const std::string& url, HttpRequestArgsPtr args)
{
return request(url, kHead, std::string(), args);
}
HttpResponsePtr HttpClient::Delete(const std::string& url, HttpRequestArgsPtr args)
{
return request(url, kDelete, std::string(), args);
}
HttpResponsePtr HttpClient::request(const std::string& url,
const std::string& verb,
const HttpParameters& httpParameters,
const HttpFormDataParameters& httpFormDataParameters,
HttpRequestArgsPtr args)
{
std::string body;
if (httpFormDataParameters.empty())
{
body = serializeHttpParameters(httpParameters);
}
else
{
std::string multipartBoundary = generateMultipartBoundary();
args->multipartBoundary = multipartBoundary;
body = serializeHttpFormDataParameters(
multipartBoundary, httpFormDataParameters, httpParameters);
}
#ifdef IXWEBSOCKET_USE_ZLIB
if (args->compressRequest)
{
body = gzipCompress(body);
}
#endif
return request(url, verb, body, args);
}
HttpResponsePtr HttpClient::post(const std::string& url,
const HttpParameters& httpParameters,
const HttpFormDataParameters& httpFormDataParameters,
HttpRequestArgsPtr args)
{
return request(url, kPost, httpParameters, httpFormDataParameters, args);
}
HttpResponsePtr HttpClient::post(const std::string& url,
const std::string& body,
HttpRequestArgsPtr args)
{
return request(url, kPost, body, args);
}
HttpResponsePtr HttpClient::put(const std::string& url,
const HttpParameters& httpParameters,
const HttpFormDataParameters& httpFormDataParameters,
HttpRequestArgsPtr args)
{
return request(url, kPut, httpParameters, httpFormDataParameters, args);
}
HttpResponsePtr HttpClient::put(const std::string& url,
const std::string& body,
const HttpRequestArgsPtr args)
{
return request(url, kPut, body, args);
}
HttpResponsePtr HttpClient::patch(const std::string& url,
const HttpParameters& httpParameters,
const HttpFormDataParameters& httpFormDataParameters,
HttpRequestArgsPtr args)
{
return request(url, kPatch, httpParameters, httpFormDataParameters, args);
}
HttpResponsePtr HttpClient::patch(const std::string& url,
const std::string& body,
const HttpRequestArgsPtr args)
{
return request(url, kPatch, body, args);
}
std::string HttpClient::urlEncode(const std::string& value)
{
std::ostringstream escaped;
escaped.fill('0');
escaped << std::hex;
for (std::string::const_iterator i = value.begin(), n = value.end(); i != n; ++i)
{
std::string::value_type c = (*i);
// Keep alphanumeric and other accepted characters intact
if (isalnum(c) || c == '-' || c == '_' || c == '.' || c == '~')
{
escaped << c;
continue;
}
// Any other characters are percent-encoded
escaped << std::uppercase;
escaped << '%' << std::setw(2) << int((unsigned char) c);
escaped << std::nouppercase;
}
return escaped.str();
}
std::string HttpClient::serializeHttpParameters(const HttpParameters& httpParameters)
{
std::stringstream ss;
size_t count = httpParameters.size();
size_t i = 0;
for (auto&& it : httpParameters)
{
ss << urlEncode(it.first) << "=" << urlEncode(it.second);
if (i++ < (count - 1))
{
ss << "&";
}
}
return ss.str();
}
std::string HttpClient::serializeHttpFormDataParameters(
const std::string& multipartBoundary,
const HttpFormDataParameters& httpFormDataParameters,
const HttpParameters& httpParameters)
{
//
// --AaB03x
// Content-Disposition: form-data; name="submit-name"
// Larry
// --AaB03x
// Content-Disposition: form-data; name="foo.txt"; filename="file1.txt"
// Content-Type: text/plain
// ... contents of file1.txt ...
// --AaB03x--
//
std::stringstream ss;
for (auto&& it : httpFormDataParameters)
{
ss << "--" << multipartBoundary << "\r\n"
<< "Content-Disposition:"
<< " form-data; name=\"" << it.first << "\";"
<< " filename=\"" << it.first << "\""
<< "\r\n"
<< "Content-Type: application/octet-stream"
<< "\r\n"
<< "\r\n"
<< it.second << "\r\n";
}
for (auto&& it : httpParameters)
{
ss << "--" << multipartBoundary << "\r\n"
<< "Content-Disposition:"
<< " form-data; name=\"" << it.first << "\";"
<< "\r\n"
<< "\r\n"
<< it.second << "\r\n";
}
ss << "--" << multipartBoundary << "--\r\n";
return ss.str();
}
void HttpClient::log(const std::string& msg, HttpRequestArgsPtr args)
{
if (args->logger)
{
args->logger(msg);
}
}
std::string HttpClient::generateMultipartBoundary()
{
std::string str("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
static std::random_device rd;
static std::mt19937 generator(rd());
std::shuffle(str.begin(), str.end(), generator);
return str;
}
} // namespace ix

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/*
* IXHttpClient.h
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include "IXHttp.h"
#include "IXSocket.h"
#include "IXSocketTLSOptions.h"
#include "IXWebSocketHttpHeaders.h"
#include <algorithm>
#include <atomic>
#include <condition_variable>
#include <functional>
#include <map>
#include <memory>
#include <mutex>
#include <queue>
#include <thread>
namespace ix
{
class HttpClient
{
public:
HttpClient(bool async = false);
~HttpClient();
HttpResponsePtr get(const std::string& url, HttpRequestArgsPtr args);
HttpResponsePtr head(const std::string& url, HttpRequestArgsPtr args);
HttpResponsePtr Delete(const std::string& url, HttpRequestArgsPtr args);
HttpResponsePtr post(const std::string& url,
const HttpParameters& httpParameters,
const HttpFormDataParameters& httpFormDataParameters,
HttpRequestArgsPtr args);
HttpResponsePtr post(const std::string& url,
const std::string& body,
HttpRequestArgsPtr args);
HttpResponsePtr put(const std::string& url,
const HttpParameters& httpParameters,
const HttpFormDataParameters& httpFormDataParameters,
HttpRequestArgsPtr args);
HttpResponsePtr put(const std::string& url,
const std::string& body,
HttpRequestArgsPtr args);
HttpResponsePtr patch(const std::string& url,
const HttpParameters& httpParameters,
const HttpFormDataParameters& httpFormDataParameters,
HttpRequestArgsPtr args);
HttpResponsePtr patch(const std::string& url,
const std::string& body,
HttpRequestArgsPtr args);
HttpResponsePtr request(const std::string& url,
const std::string& verb,
const std::string& body,
HttpRequestArgsPtr args,
int redirects = 0);
HttpResponsePtr request(const std::string& url,
const std::string& verb,
const HttpParameters& httpParameters,
const HttpFormDataParameters& httpFormDataParameters,
HttpRequestArgsPtr args);
void setForceBody(bool value);
// Async API
HttpRequestArgsPtr createRequest(const std::string& url = std::string(),
const std::string& verb = HttpClient::kGet);
bool performRequest(HttpRequestArgsPtr request,
const OnResponseCallback& onResponseCallback);
// TLS
void setTLSOptions(const SocketTLSOptions& tlsOptions);
std::string serializeHttpParameters(const HttpParameters& httpParameters);
std::string serializeHttpFormDataParameters(
const std::string& multipartBoundary,
const HttpFormDataParameters& httpFormDataParameters,
const HttpParameters& httpParameters = HttpParameters());
std::string generateMultipartBoundary();
std::string urlEncode(const std::string& value);
const static std::string kPost;
const static std::string kGet;
const static std::string kHead;
const static std::string kDelete;
const static std::string kPut;
const static std::string kPatch;
private:
void log(const std::string& msg, HttpRequestArgsPtr args);
// Async API background thread runner
void run();
// Async API
bool _async;
std::queue<std::pair<HttpRequestArgsPtr, OnResponseCallback>> _queue;
mutable std::mutex _queueMutex;
std::condition_variable _condition;
std::atomic<bool> _stop;
std::thread _thread;
std::unique_ptr<Socket> _socket;
std::recursive_mutex _mutex; // to protect accessing the _socket (only one socket per
// client) the mutex needs to be recursive as this function
// might be called recursively to follow HTTP redirections
SocketTLSOptions _tlsOptions;
bool _forceBody;
};
} // namespace ix

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/*
* IXHttpServer.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#include "IXHttpServer.h"
#include "IXGzipCodec.h"
#include "IXNetSystem.h"
#include "IXSocketConnect.h"
#include "IXUserAgent.h"
#include <cstdint>
#include <cstring>
#include <fstream>
#include <sstream>
#include <vector>
namespace
{
std::pair<bool, std::vector<uint8_t>> load(const std::string& path)
{
std::vector<uint8_t> memblock;
std::ifstream file(path);
if (!file.is_open()) return std::make_pair(false, memblock);
file.seekg(0, file.end);
std::streamoff size = file.tellg();
file.seekg(0, file.beg);
memblock.resize((size_t) size);
file.read((char*) &memblock.front(), static_cast<std::streamsize>(size));
return std::make_pair(true, memblock);
}
std::pair<bool, std::string> readAsString(const std::string& path)
{
auto res = load(path);
auto vec = res.second;
return std::make_pair(res.first, std::string(vec.begin(), vec.end()));
}
std::string response_head_file(const std::string& file_name){
if (std::string::npos != file_name.find(".html") || std::string::npos != file_name.find(".htm"))
return "text/html";
else if (std::string::npos != file_name.find(".css"))
return "text/css";
else if (std::string::npos != file_name.find(".js") || std::string::npos != file_name.find(".mjs"))
return "application/x-javascript";
else if (std::string::npos != file_name.find(".ico"))
return "image/x-icon";
else if (std::string::npos != file_name.find(".png"))
return "image/png";
else if (std::string::npos != file_name.find(".jpg") || std::string::npos != file_name.find(".jpeg"))
return "image/jpeg";
else if (std::string::npos != file_name.find(".gif"))
return "image/gif";
else if (std::string::npos != file_name.find(".svg"))
return "image/svg+xml";
else
return "application/octet-stream";
}
} // namespace
namespace ix
{
const int HttpServer::kDefaultTimeoutSecs(30);
HttpServer::HttpServer(int port,
const std::string& host,
int backlog,
size_t maxConnections,
int addressFamily,
int timeoutSecs,
int handshakeTimeoutSecs)
: WebSocketServer(port, host, backlog, maxConnections, handshakeTimeoutSecs, addressFamily)
, _timeoutSecs(timeoutSecs)
{
setDefaultConnectionCallback();
}
void HttpServer::setOnConnectionCallback(const OnConnectionCallback& callback)
{
_onConnectionCallback = callback;
}
void HttpServer::handleConnection(std::unique_ptr<Socket> socket,
std::shared_ptr<ConnectionState> connectionState)
{
auto ret = Http::parseRequest(socket, _timeoutSecs);
// FIXME: handle errors in parseRequest
if (std::get<0>(ret))
{
auto request = std::get<2>(ret);
std::shared_ptr<ix::HttpResponse> response;
if (request->headers["Upgrade"] == "websocket")
{
WebSocketServer::handleUpgrade(std::move(socket), connectionState, request);
}
else
{
auto response = _onConnectionCallback(request, connectionState);
if (!Http::sendResponse(response, socket))
{
logError("Cannot send response");
}
}
}
connectionState->setTerminated();
}
void HttpServer::setDefaultConnectionCallback()
{
setOnConnectionCallback(
[this](HttpRequestPtr request,
std::shared_ptr<ConnectionState> connectionState) -> HttpResponsePtr
{
std::string uri(request->uri);
if (uri.empty() || uri == "/")
{
uri = "/index.html";
}
WebSocketHttpHeaders headers;
headers["Server"] = userAgent();
headers["Content-Type"] = response_head_file(uri);
std::string path("." + uri);
auto res = readAsString(path);
bool found = res.first;
if (!found)
{
return std::make_shared<HttpResponse>(
404, "Not Found", HttpErrorCode::Ok, WebSocketHttpHeaders(), std::string());
}
std::string content = res.second;
#ifdef IXWEBSOCKET_USE_ZLIB
std::string acceptEncoding = request->headers["Accept-encoding"];
if (acceptEncoding == "*" || acceptEncoding.find("gzip") != std::string::npos)
{
content = gzipCompress(content);
headers["Content-Encoding"] = "gzip";
}
headers["Accept-Encoding"] = "gzip";
#endif
// Log request
std::stringstream ss;
ss << connectionState->getRemoteIp() << ":" << connectionState->getRemotePort()
<< " " << request->method << " " << request->headers["User-Agent"] << " "
<< request->uri << " " << content.size();
logInfo(ss.str());
// FIXME: check extensions to set the content type
// headers["Content-Type"] = "application/octet-stream";
headers["Accept-Ranges"] = "none";
return std::make_shared<HttpResponse>(
200, "OK", HttpErrorCode::Ok, headers, content);
});
}
void HttpServer::makeRedirectServer(const std::string& redirectUrl)
{
//
// See https://developer.mozilla.org/en-US/docs/Web/HTTP/Redirections
//
setOnConnectionCallback(
[this, redirectUrl](HttpRequestPtr request,
std::shared_ptr<ConnectionState> connectionState) -> HttpResponsePtr
{
WebSocketHttpHeaders headers;
headers["Server"] = userAgent();
// Log request
std::stringstream ss;
ss << connectionState->getRemoteIp() << ":" << connectionState->getRemotePort()
<< " " << request->method << " " << request->headers["User-Agent"] << " "
<< request->uri;
logInfo(ss.str());
if (request->method == "POST")
{
return std::make_shared<HttpResponse>(
200, "OK", HttpErrorCode::Ok, headers, std::string());
}
headers["Location"] = redirectUrl;
return std::make_shared<HttpResponse>(
301, "OK", HttpErrorCode::Ok, headers, std::string());
});
}
//
// Display the client parameter and body on the console
//
void HttpServer::makeDebugServer()
{
setOnConnectionCallback(
[this](HttpRequestPtr request,
std::shared_ptr<ConnectionState> connectionState) -> HttpResponsePtr
{
WebSocketHttpHeaders headers;
headers["Server"] = userAgent();
// Log request
std::stringstream ss;
ss << connectionState->getRemoteIp() << ":" << connectionState->getRemotePort()
<< " " << request->method << " " << request->headers["User-Agent"] << " "
<< request->uri;
logInfo(ss.str());
logInfo("== Headers == ");
for (auto&& it : request->headers)
{
std::ostringstream oss;
oss << it.first << ": " << it.second;
logInfo(oss.str());
}
logInfo("");
logInfo("== Body == ");
logInfo(request->body);
logInfo("");
return std::make_shared<HttpResponse>(
200, "OK", HttpErrorCode::Ok, headers, std::string("OK"));
});
}
int HttpServer::getTimeoutSecs()
{
return _timeoutSecs;
}
} // namespace ix

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/*
* IXHttpServer.h
* Author: Benjamin Sergeant
* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include "IXHttp.h"
#include "IXWebSocket.h"
#include "IXWebSocketServer.h"
#include <functional>
#include <memory>
#include <mutex>
#include <set>
#include <string>
#include <thread>
#include <utility> // pair
namespace ix
{
class HttpServer final : public WebSocketServer
{
public:
using OnConnectionCallback =
std::function<HttpResponsePtr(HttpRequestPtr, std::shared_ptr<ConnectionState>)>;
HttpServer(int port = SocketServer::kDefaultPort,
const std::string& host = SocketServer::kDefaultHost,
int backlog = SocketServer::kDefaultTcpBacklog,
size_t maxConnections = SocketServer::kDefaultMaxConnections,
int addressFamily = SocketServer::kDefaultAddressFamily,
int timeoutSecs = HttpServer::kDefaultTimeoutSecs,
int handshakeTimeoutSecs = WebSocketServer::kDefaultHandShakeTimeoutSecs);
void setOnConnectionCallback(const OnConnectionCallback& callback);
void makeRedirectServer(const std::string& redirectUrl);
void makeDebugServer();
int getTimeoutSecs();
private:
// Member variables
OnConnectionCallback _onConnectionCallback;
const static int kDefaultTimeoutSecs;
int _timeoutSecs;
// Methods
virtual void handleConnection(std::unique_ptr<Socket>,
std::shared_ptr<ConnectionState> connectionState) final;
void setDefaultConnectionCallback();
};
} // namespace ix

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/*
* IXNetSystem.cpp
* Author: Korchynskyi Dmytro
* Copyright (c) 2019 Machine Zone. All rights reserved.
*/
#include "IXNetSystem.h"
#include <cstdint>
#include <cstdio>
#ifdef _WIN32
#ifndef EAFNOSUPPORT
#define EAFNOSUPPORT 102
#endif
#ifndef ENOSPC
#define ENOSPC 28
#endif
#include <vector>
#endif
namespace ix
{
bool initNetSystem()
{
#ifdef _WIN32
WORD wVersionRequested;
WSADATA wsaData;
int err;
// Use the MAKEWORD(lowbyte, highbyte) macro declared in Windef.h
wVersionRequested = MAKEWORD(2, 2);
err = WSAStartup(wVersionRequested, &wsaData);
return err == 0;
#else
return true;
#endif
}
bool uninitNetSystem()
{
#ifdef _WIN32
int err = WSACleanup();
return err == 0;
#else
return true;
#endif
}
#ifdef _WIN32
struct WSAEvent
{
public:
WSAEvent(struct pollfd* fd)
: _fd(fd)
{
_event = WSACreateEvent();
}
WSAEvent(WSAEvent&& source) noexcept
{
_event = source._event;
source._event = WSA_INVALID_EVENT; // invalidate the event in the source
_fd = source._fd;
}
~WSAEvent()
{
if (_event != WSA_INVALID_EVENT)
{
// We must deselect the networkevents from the socket event. Otherwise the
// socket will report states that aren't there.
if (_fd != nullptr && (int)_fd->fd != -1)
WSAEventSelect(_fd->fd, _event, 0);
WSACloseEvent(_event);
}
}
operator HANDLE()
{
return _event;
}
operator struct pollfd*()
{
return _fd;
}
private:
HANDLE _event;
struct pollfd* _fd;
};
#endif
//
// That function could 'return WSAPoll(pfd, nfds, timeout);'
// but WSAPoll is said to have weird behaviors on the internet
// (the curl folks have had problems with it).
//
// So we make it a select wrapper
//
// UPDATE: WSAPoll was fixed in Windows 10 Version 2004
//
// The optional "event" is set to nullptr if it wasn't signaled.
int poll(struct pollfd* fds, nfds_t nfds, int timeout, void** event)
{
#ifdef _WIN32
if (event && *event)
{
HANDLE interruptEvent = reinterpret_cast<HANDLE>(*event);
*event = nullptr; // the event wasn't signaled yet
if (nfds < 0 || nfds >= MAXIMUM_WAIT_OBJECTS - 1)
{
WSASetLastError(WSAEINVAL);
return SOCKET_ERROR;
}
std::vector<WSAEvent> socketEvents;
std::vector<HANDLE> handles;
// put the interrupt event as first element, making it highest priority
handles.push_back(interruptEvent);
// create the WSAEvents for the sockets
for (nfds_t i = 0; i < nfds; ++i)
{
struct pollfd* fd = &fds[i];
fd->revents = 0;
if (fd->fd >= 0)
{
// create WSAEvent and add it to the vectors
socketEvents.push_back(std::move(WSAEvent(fd)));
HANDLE handle = socketEvents.back();
if (handle == WSA_INVALID_EVENT)
{
WSASetLastError(WSAENOBUFS);
return SOCKET_ERROR;
}
handles.push_back(handle);
// mapping
long networkEvents = 0;
if (fd->events & (POLLIN )) networkEvents |= FD_READ | FD_ACCEPT;
if (fd->events & (POLLOUT /*| POLLWRNORM | POLLWRBAND*/)) networkEvents |= FD_WRITE | FD_CONNECT;
//if (fd->events & (POLLPRI | POLLRDBAND )) networkEvents |= FD_OOB;
if (WSAEventSelect(fd->fd, handle, networkEvents) != 0)
{
fd->revents = POLLNVAL;
socketEvents.pop_back();
handles.pop_back();
}
}
}
DWORD n = WSAWaitForMultipleEvents(handles.size(), handles.data(), FALSE, timeout != -1 ? static_cast<DWORD>(timeout) : WSA_INFINITE, FALSE);
if (n == WSA_WAIT_FAILED) return SOCKET_ERROR;
if (n == WSA_WAIT_TIMEOUT) return 0;
if (n == WSA_WAIT_EVENT_0)
{
// the interrupt event was signaled
*event = reinterpret_cast<void*>(interruptEvent);
return 1;
}
int handleIndex = n - WSA_WAIT_EVENT_0;
int socketIndex = handleIndex - 1;
WSANETWORKEVENTS netEvents;
int count = 0;
// WSAWaitForMultipleEvents returns the index of the first signaled event. And to emulate WSAPoll()
// all the signaled events must be processed.
while (socketIndex < (int)socketEvents.size())
{
struct pollfd* fd = socketEvents[socketIndex];
memset(&netEvents, 0, sizeof(netEvents));
if (WSAEnumNetworkEvents(fd->fd, socketEvents[socketIndex], &netEvents) != 0)
{
fd->revents = POLLERR;
}
else if (netEvents.lNetworkEvents != 0)
{
// mapping
if (netEvents.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_OOB)) fd->revents |= POLLIN;
if (netEvents.lNetworkEvents & (FD_WRITE | FD_CONNECT )) fd->revents |= POLLOUT;
for (int i = 0; i < FD_MAX_EVENTS; ++i)
{
if (netEvents.iErrorCode[i] != 0)
{
fd->revents |= POLLERR;
break;
}
}
if (fd->revents != 0)
{
// only signaled sockets count
count++;
}
}
socketIndex++;
}
return count;
}
else
{
if (event && *event) *event = nullptr;
socket_t maxfd = 0;
fd_set readfds, writefds, errorfds;
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_ZERO(&errorfds);
for (nfds_t i = 0; i < nfds; ++i)
{
struct pollfd* fd = &fds[i];
if (fd->fd > maxfd)
{
maxfd = fd->fd;
}
if ((fd->events & POLLIN))
{
FD_SET(fd->fd, &readfds);
}
if ((fd->events & POLLOUT))
{
FD_SET(fd->fd, &writefds);
}
if ((fd->events & POLLERR))
{
FD_SET(fd->fd, &errorfds);
}
}
struct timeval tv;
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
int ret = select(maxfd + 1, &readfds, &writefds, &errorfds, timeout != -1 ? &tv : NULL);
if (ret < 0)
{
return ret;
}
for (nfds_t i = 0; i < nfds; ++i)
{
struct pollfd* fd = &fds[i];
fd->revents = 0;
if (FD_ISSET(fd->fd, &readfds))
{
fd->revents |= POLLIN;
}
if (FD_ISSET(fd->fd, &writefds))
{
fd->revents |= POLLOUT;
}
if (FD_ISSET(fd->fd, &errorfds))
{
fd->revents |= POLLERR;
}
}
return ret;
}
#else
if (event && *event) *event = nullptr;
//
// It was reported that on Android poll can fail and return -1 with
// errno == EINTR, which should be a temp error and should typically
// be handled by retrying in a loop.
// Maybe we need to put all syscall / C functions in
// a new IXSysCalls.cpp and wrap them all.
//
// The style from libuv is as such.
//
int ret = -1;
do
{
ret = ::poll(fds, nfds, timeout);
} while (ret == -1 && errno == EINTR);
return ret;
#endif
}
//
// mingw does not have inet_ntop, which were taken as is from the musl C library.
//
const char* inet_ntop(int af, const void* a0, char* s, socklen_t l)
{
#if defined(_WIN32) && defined(__GNUC__)
const unsigned char* a = (const unsigned char*) a0;
int i, j, max, best;
char buf[100];
switch (af)
{
case AF_INET:
if (snprintf(s, l, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]) < l) return s;
break;
case AF_INET6:
if (memcmp(a, "\0\0\0\0\0\0\0\0\0\0\377\377", 12))
snprintf(buf,
sizeof buf,
"%x:%x:%x:%x:%x:%x:%x:%x",
256 * a[0] + a[1],
256 * a[2] + a[3],
256 * a[4] + a[5],
256 * a[6] + a[7],
256 * a[8] + a[9],
256 * a[10] + a[11],
256 * a[12] + a[13],
256 * a[14] + a[15]);
else
snprintf(buf,
sizeof buf,
"%x:%x:%x:%x:%x:%x:%d.%d.%d.%d",
256 * a[0] + a[1],
256 * a[2] + a[3],
256 * a[4] + a[5],
256 * a[6] + a[7],
256 * a[8] + a[9],
256 * a[10] + a[11],
a[12],
a[13],
a[14],
a[15]);
/* Replace longest /(^0|:)[:0]{2,}/ with "::" */
for (i = best = 0, max = 2; buf[i]; i++)
{
if (i && buf[i] != ':') continue;
j = strspn(buf + i, ":0");
if (j > max) best = i, max = j;
}
if (max > 3)
{
buf[best] = buf[best + 1] = ':';
memmove(buf + best + 2, buf + best + max, i - best - max + 1);
}
if (strlen(buf) < (size_t)l)
{
strcpy(s, buf);
return s;
}
break;
default: errno = EAFNOSUPPORT; return 0;
}
errno = ENOSPC;
return 0;
#else
return ::inet_ntop(af, a0, s, l);
#endif
}
#if defined(_WIN32) && defined(__GNUC__)
static int hexval(unsigned c)
{
if (c - '0' < 10) return c - '0';
c |= 32;
if (c - 'a' < 6) return c - 'a' + 10;
return -1;
}
#endif
//
// mingw does not have inet_pton, which were taken as is from the musl C library.
//
int inet_pton(int af, const char* s, void* a0)
{
#if defined(_WIN32) && defined(__GNUC__)
uint16_t ip[8];
unsigned char* a = (unsigned char*) a0;
int i, j, v, d, brk = -1, need_v4 = 0;
if (af == AF_INET)
{
for (i = 0; i < 4; i++)
{
for (v = j = 0; j < 3 && isdigit(s[j]); j++)
v = 10 * v + s[j] - '0';
if (j == 0 || (j > 1 && s[0] == '0') || v > 255) return 0;
a[i] = v;
if (s[j] == 0 && i == 3) return 1;
if (s[j] != '.') return 0;
s += j + 1;
}
return 0;
}
else if (af != AF_INET6)
{
errno = EAFNOSUPPORT;
return -1;
}
if (*s == ':' && *++s != ':') return 0;
for (i = 0;; i++)
{
if (s[0] == ':' && brk < 0)
{
brk = i;
ip[i & 7] = 0;
if (!*++s) break;
if (i == 7) return 0;
continue;
}
for (v = j = 0; j < 4 && (d = hexval(s[j])) >= 0; j++)
v = 16 * v + d;
if (j == 0) return 0;
ip[i & 7] = v;
if (!s[j] && (brk >= 0 || i == 7)) break;
if (i == 7) return 0;
if (s[j] != ':')
{
if (s[j] != '.' || (i < 6 && brk < 0)) return 0;
need_v4 = 1;
i++;
break;
}
s += j + 1;
}
if (brk >= 0)
{
memmove(ip + brk + 7 - i, ip + brk, 2 * (i + 1 - brk));
for (j = 0; j < 7 - i; j++)
ip[brk + j] = 0;
}
for (j = 0; j < 8; j++)
{
*a++ = ip[j] >> 8;
*a++ = ip[j];
}
if (need_v4 && inet_pton(AF_INET, (const char*) s, a - 4) <= 0) return 0;
return 1;
#else
return ::inet_pton(af, s, a0);
#endif
}
// Convert network bytes to host bytes. Copied from the ASIO library
unsigned short network_to_host_short(unsigned short value)
{
#if defined(_WIN32)
unsigned char* value_p = reinterpret_cast<unsigned char*>(&value);
unsigned short result = (static_cast<unsigned short>(value_p[0]) << 8)
| static_cast<unsigned short>(value_p[1]);
return result;
#else // defined(_WIN32)
return ntohs(value);
#endif // defined(_WIN32)
}
} // namespace ix

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@ -1,93 +0,0 @@
/*
* IXNetSystem.h
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone. All rights reserved.
*/
#pragma once
#include <cstdint>
#ifdef __FreeBSD__
#include <sys/types.h>
#endif
#ifdef _WIN32
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <ws2tcpip.h>
#include <winsock2.h>
#include <basetsd.h>
#include <io.h>
#include <ws2def.h>
#include <cerrno>
#undef EWOULDBLOCK
#undef EAGAIN
#undef EINPROGRESS
#undef EBADF
#undef EINVAL
// map to WSA error codes
#define EWOULDBLOCK WSAEWOULDBLOCK
#define EAGAIN WSATRY_AGAIN
#define EINPROGRESS WSAEINPROGRESS
#define EBADF WSAEBADF
#define EINVAL WSAEINVAL
// Define our own poll on Windows, as a wrapper on top of select
typedef unsigned long int nfds_t;
// pollfd is not defined by some versions of mingw64 since _WIN32_WINNT is too low
#if _WIN32_WINNT < 0x0600
struct pollfd
{
int fd; /* file descriptor */
short events; /* requested events */
short revents; /* returned events */
};
#define POLLIN 0x001 /* There is data to read. */
#define POLLOUT 0x004 /* Writing now will not block. */
#define POLLERR 0x008 /* Error condition. */
#define POLLHUP 0x010 /* Hung up. */
#define POLLNVAL 0x020 /* Invalid polling request. */
#endif
#else
#include <arpa/inet.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <poll.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <unistd.h>
#endif
namespace ix
{
#ifdef _WIN32
typedef SOCKET socket_t;
#else
typedef int socket_t;
#endif
bool initNetSystem();
bool uninitNetSystem();
int poll(struct pollfd* fds, nfds_t nfds, int timeout, void** event);
const char* inet_ntop(int af, const void* src, char* dst, socklen_t size);
int inet_pton(int af, const char* src, void* dst);
unsigned short network_to_host_short(unsigned short value);
} // namespace ix

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/*
* IXProgressCallback.h
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <functional>
#include <string>
namespace ix
{
using OnProgressCallback = std::function<bool(int current, int total)>;
using OnChunkCallback = std::function<void(const std::string&)>;
}

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@ -1,53 +0,0 @@
/*
* IXSelectInterrupt.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#include "IXSelectInterrupt.h"
namespace ix
{
const uint64_t SelectInterrupt::kSendRequest = 1;
const uint64_t SelectInterrupt::kCloseRequest = 2;
SelectInterrupt::SelectInterrupt()
{
;
}
SelectInterrupt::~SelectInterrupt()
{
;
}
bool SelectInterrupt::init(std::string& /*errorMsg*/)
{
return true;
}
bool SelectInterrupt::notify(uint64_t /*value*/)
{
return true;
}
uint64_t SelectInterrupt::read()
{
return 0;
}
bool SelectInterrupt::clear()
{
return true;
}
int SelectInterrupt::getFd() const
{
return -1;
}
void* SelectInterrupt::getEvent() const
{
return nullptr;
}
} // namespace ix

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/*
* IXSelectInterrupt.h
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <cstdint>
#include <memory>
#include <string>
namespace ix
{
class SelectInterrupt
{
public:
SelectInterrupt();
virtual ~SelectInterrupt();
virtual bool init(std::string& errorMsg);
virtual bool notify(uint64_t value);
virtual bool clear();
virtual uint64_t read();
virtual int getFd() const;
virtual void* getEvent() const;
// Used as special codes for pipe communication
static const uint64_t kSendRequest;
static const uint64_t kCloseRequest;
};
using SelectInterruptPtr = std::unique_ptr<SelectInterrupt>;
} // namespace ix

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@ -1,85 +0,0 @@
/*
* IXSelectInterruptEvent.cpp
*/
//
// On Windows we use a Windows Event to wake up ix::poll() (WSAWaitForMultipleEvents).
// And on any other platform that doesn't support pipe file descriptors we
// emulate the interrupt event by using a short timeout with ix::poll() and
// read from the SelectInterrupt. (see Socket::poll() "Emulation mode")
//
#include <algorithm>
#include "IXSelectInterruptEvent.h"
namespace ix
{
SelectInterruptEvent::SelectInterruptEvent()
{
#ifdef _WIN32
_event = CreateEvent(NULL, TRUE, FALSE, NULL);
#endif
}
SelectInterruptEvent::~SelectInterruptEvent()
{
#ifdef _WIN32
CloseHandle(_event);
#endif
}
bool SelectInterruptEvent::init(std::string& /*errorMsg*/)
{
return true;
}
bool SelectInterruptEvent::notify(uint64_t value)
{
std::lock_guard<std::mutex> lock(_valuesMutex);
// WebSocket implementation detail: We only need one of the values in the queue
if (std::find(_values.begin(), _values.end(), value) == _values.end())
_values.push_back(value);
#ifdef _WIN32
SetEvent(_event); // wake up
#endif
return true;
}
uint64_t SelectInterruptEvent::read()
{
std::lock_guard<std::mutex> lock(_valuesMutex);
if (_values.size() > 0)
{
uint64_t value = _values.front();
_values.pop_front();
#ifdef _WIN32
// signal the event if there is still data in the queue
if (_values.size() == 0)
ResetEvent(_event);
#endif
return value;
}
return 0;
}
bool SelectInterruptEvent::clear()
{
std::lock_guard<std::mutex> lock(_valuesMutex);
_values.clear();
#ifdef _WIN32
ResetEvent(_event);
#endif
return true;
}
void* SelectInterruptEvent::getEvent() const
{
#ifdef _WIN32
return reinterpret_cast<void*>(_event);
#else
return nullptr;
#endif
}
} // namespace ix

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/*
* IXSelectInterruptEvent.h
*/
#pragma once
#include "IXSelectInterrupt.h"
#include <cstdint>
#include <mutex>
#include <string>
#include <deque>
#ifdef _WIN32
#include <windows.h>
#endif
namespace ix
{
class SelectInterruptEvent final : public SelectInterrupt
{
public:
SelectInterruptEvent();
virtual ~SelectInterruptEvent();
bool init(std::string& /*errorMsg*/) final;
bool notify(uint64_t value) final;
bool clear() final;
uint64_t read() final;
void* getEvent() const final;
private:
// contains every value only once, new values are inserted at the begin, nu
std::deque<uint64_t> _values;
std::mutex _valuesMutex;
#ifdef _WIN32
// Windows Event to wake up the socket poll
HANDLE _event;
#endif
};
} // namespace ix

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@ -1,26 +0,0 @@
/*
* IXSelectInterruptFactory.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#include "IXSelectInterruptFactory.h"
#include "IXUniquePtr.h"
#if _WIN32
#include "IXSelectInterruptEvent.h"
#else
#include "IXSelectInterruptPipe.h"
#endif
namespace ix
{
SelectInterruptPtr createSelectInterrupt()
{
#ifdef _WIN32
return ix::make_unique<SelectInterruptEvent>();
#else
return ix::make_unique<SelectInterruptPipe>();
#endif
}
} // namespace ix

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@ -1,16 +0,0 @@
/*
* IXSelectInterruptFactory.h
* Author: Benjamin Sergeant
* Copyright (c) 2019 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <memory>
namespace ix
{
class SelectInterrupt;
using SelectInterruptPtr = std::unique_ptr<SelectInterrupt>;
SelectInterruptPtr createSelectInterrupt();
} // namespace ix

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@ -1,165 +0,0 @@
/*
* IXSelectInterruptPipe.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2018-2019 Machine Zone, Inc. All rights reserved.
*/
//
// On UNIX we use pipes to wake up select. There is no way to do that
// on Windows so this file is compiled out on Windows.
//
#ifndef _WIN32
#include "IXSelectInterruptPipe.h"
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <sstream>
#include <string.h> // for strerror
#include <unistd.h> // for write
namespace ix
{
// File descriptor at index 0 in _fildes is the read end of the pipe
// File descriptor at index 1 in _fildes is the write end of the pipe
const int SelectInterruptPipe::kPipeReadIndex = 0;
const int SelectInterruptPipe::kPipeWriteIndex = 1;
SelectInterruptPipe::SelectInterruptPipe()
{
_fildes[kPipeReadIndex] = -1;
_fildes[kPipeWriteIndex] = -1;
}
SelectInterruptPipe::~SelectInterruptPipe()
{
if (-1 != _fildes[kPipeReadIndex]) {
::close(_fildes[kPipeReadIndex]);
}
if (-1 != _fildes[kPipeWriteIndex]) {
::close(_fildes[kPipeWriteIndex]);
}
_fildes[kPipeReadIndex] = -1;
_fildes[kPipeWriteIndex] = -1;
}
bool SelectInterruptPipe::init(std::string& errorMsg)
{
std::lock_guard<std::mutex> lock(_fildesMutex);
// calling init twice is a programming error
assert(_fildes[kPipeReadIndex] == -1);
assert(_fildes[kPipeWriteIndex] == -1);
if (pipe(_fildes) < 0)
{
std::stringstream ss;
ss << "SelectInterruptPipe::init() failed in pipe() call"
<< " : " << strerror(errno);
errorMsg = ss.str();
return false;
}
if (fcntl(_fildes[kPipeReadIndex], F_SETFL, O_NONBLOCK) == -1)
{
std::stringstream ss;
ss << "SelectInterruptPipe::init() failed in fcntl(..., O_NONBLOCK) call"
<< " : " << strerror(errno);
errorMsg = ss.str();
_fildes[kPipeReadIndex] = -1;
_fildes[kPipeWriteIndex] = -1;
return false;
}
if (fcntl(_fildes[kPipeWriteIndex], F_SETFL, O_NONBLOCK) == -1)
{
std::stringstream ss;
ss << "SelectInterruptPipe::init() failed in fcntl(..., O_NONBLOCK) call"
<< " : " << strerror(errno);
errorMsg = ss.str();
_fildes[kPipeReadIndex] = -1;
_fildes[kPipeWriteIndex] = -1;
return false;
}
#ifdef F_SETNOSIGPIPE
if (fcntl(_fildes[kPipeWriteIndex], F_SETNOSIGPIPE, 1) == -1)
{
std::stringstream ss;
ss << "SelectInterruptPipe::init() failed in fcntl(.... F_SETNOSIGPIPE) call"
<< " : " << strerror(errno);
errorMsg = ss.str();
_fildes[kPipeReadIndex] = -1;
_fildes[kPipeWriteIndex] = -1;
return false;
}
if (fcntl(_fildes[kPipeWriteIndex], F_SETNOSIGPIPE, 1) == -1)
{
std::stringstream ss;
ss << "SelectInterruptPipe::init() failed in fcntl(..., F_SETNOSIGPIPE) call"
<< " : " << strerror(errno);
errorMsg = ss.str();
_fildes[kPipeReadIndex] = -1;
_fildes[kPipeWriteIndex] = -1;
return false;
}
#endif
return true;
}
bool SelectInterruptPipe::notify(uint64_t value)
{
std::lock_guard<std::mutex> lock(_fildesMutex);
int fd = _fildes[kPipeWriteIndex];
if (fd == -1) return false;
ssize_t ret = -1;
do
{
ret = ::write(fd, &value, sizeof(value));
} while (ret == -1 && errno == EINTR);
// we should write 8 bytes for an uint64_t
return ret == 8;
}
// TODO: return max uint64_t for errors ?
uint64_t SelectInterruptPipe::read()
{
std::lock_guard<std::mutex> lock(_fildesMutex);
int fd = _fildes[kPipeReadIndex];
uint64_t value = 0;
ssize_t ret = -1;
do
{
ret = ::read(fd, &value, sizeof(value));
} while (ret == -1 && errno == EINTR);
return value;
}
bool SelectInterruptPipe::clear()
{
return true;
}
int SelectInterruptPipe::getFd() const
{
std::lock_guard<std::mutex> lock(_fildesMutex);
return _fildes[kPipeReadIndex];
}
} // namespace ix
#endif // !_WIN32

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@ -1,41 +0,0 @@
/*
* IXSelectInterruptPipe.h
* Author: Benjamin Sergeant
* Copyright (c) 2018-2019 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include "IXSelectInterrupt.h"
#include <cstdint>
#include <mutex>
#include <stdint.h>
#include <string>
namespace ix
{
class SelectInterruptPipe final : public SelectInterrupt
{
public:
SelectInterruptPipe();
virtual ~SelectInterruptPipe();
bool init(std::string& errorMsg) final;
bool notify(uint64_t value) final;
bool clear() final;
uint64_t read() final;
int getFd() const final;
private:
// Store file descriptors used by the communication pipe. Communication
// happens between a control thread and a background thread, which is
// blocked on select.
int _fildes[2];
mutable std::mutex _fildesMutex;
// Used to identify the read/write idx
static const int kPipeReadIndex;
static const int kPipeWriteIndex;
};
} // namespace ix

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/*
* IXSetThreadName.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2018 2020 Machine Zone, Inc. All rights reserved.
*/
#include "IXSetThreadName.h"
// unix systems
#if defined(__APPLE__) || defined(__linux__) || defined(BSD)
#include <pthread.h>
#endif
// freebsd needs this header as well
#if defined(BSD)
#include <pthread_np.h>
#endif
#ifdef __APPLE__
#include <AvailabilityMacros.h>
#endif
// Windows
#ifdef _WIN32
#include <windows.h>
#endif
namespace ix
{
#ifdef _WIN32
const DWORD MS_VC_EXCEPTION = 0x406D1388;
#pragma pack(push, 8)
typedef struct tagTHREADNAME_INFO
{
DWORD dwType; // Must be 0x1000.
LPCSTR szName; // Pointer to name (in user addr space).
DWORD dwThreadID; // Thread ID (-1=caller thread).
DWORD dwFlags; // Reserved for future use, must be zero.
} THREADNAME_INFO;
#pragma pack(pop)
void SetThreadName(DWORD dwThreadID, const char* threadName)
{
#ifndef __GNUC__
THREADNAME_INFO info;
info.dwType = 0x1000;
info.szName = threadName;
info.dwThreadID = dwThreadID;
info.dwFlags = 0;
__try
{
RaiseException(
MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(ULONG_PTR), (ULONG_PTR*) &info);
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
}
#endif
}
#endif
void setThreadName(const std::string& name)
{
#if defined(__APPLE__) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1060)
//
// Apple reserves 16 bytes for its thread names
// Notice that the Apple version of pthread_setname_np
// does not take a pthread_t argument
//
pthread_setname_np(name.substr(0, 63).c_str());
#elif defined(__linux__)
//
// Linux only reserves 16 bytes for its thread names
// See prctl and PR_SET_NAME property in
// http://man7.org/linux/man-pages/man2/prctl.2.html
//
pthread_setname_np(pthread_self(), name.substr(0, 15).c_str());
#elif defined(_WIN32)
SetThreadName(-1, name.c_str());
#elif defined(BSD)
pthread_set_name_np(pthread_self(), name.substr(0, 15).c_str());
#else
// ... assert here ?
#endif
}
} // namespace ix

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/*
* IXSetThreadName.h
* Author: Benjamin Sergeant
* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <string>
namespace ix
{
void setThreadName(const std::string& name);
}

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/*
* IXSocket.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2017-2018 Machine Zone, Inc. All rights reserved.
*/
#include "IXSocket.h"
#include "IXNetSystem.h"
#include "IXSelectInterrupt.h"
#include "IXSelectInterruptFactory.h"
#include "IXSocketConnect.h"
#include <algorithm>
#include <array>
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <vector>
#ifdef min
#undef min
#endif
namespace ix
{
const int Socket::kDefaultPollNoTimeout = -1; // No poll timeout by default
const int Socket::kDefaultPollTimeout = kDefaultPollNoTimeout;
Socket::Socket(int fd)
: _sockfd(fd)
, _selectInterrupt(createSelectInterrupt())
{
;
}
Socket::~Socket()
{
close();
}
PollResultType Socket::poll(bool readyToRead,
int timeoutMs,
int sockfd,
const SelectInterruptPtr& selectInterrupt)
{
PollResultType pollResult = PollResultType::ReadyForRead;
//
// We used to use ::select to poll but on Android 9 we get large fds out of
// ::connect which crash in FD_SET as they are larger than FD_SETSIZE. Switching
// to ::poll does fix that.
//
// However poll isn't as portable as select and has bugs on Windows, so we
// have a shim to fallback to select on those platforms. See
// https://github.com/mpv-player/mpv/pull/5203/files for such a select wrapper.
//
nfds_t nfds = 1;
struct pollfd fds[2];
memset(fds, 0, sizeof(fds));
fds[0].fd = sockfd;
fds[0].events = (readyToRead) ? POLLIN : POLLOUT;
// this is ignored by poll, but our select based poll wrapper on Windows needs it
fds[0].events |= POLLERR;
// File descriptor used to interrupt select when needed
int interruptFd = -1;
void* interruptEvent = nullptr;
if (selectInterrupt)
{
interruptFd = selectInterrupt->getFd();
interruptEvent = selectInterrupt->getEvent();
if (interruptFd != -1)
{
nfds = 2;
fds[1].fd = interruptFd;
fds[1].events = POLLIN;
}
else if (interruptEvent == nullptr)
{
// Emulation mode: SelectInterrupt neither supports file descriptors nor events
// Check the selectInterrupt for requests before doing the poll().
if (readSelectInterruptRequest(selectInterrupt, &pollResult))
{
return pollResult;
}
}
}
void* event = interruptEvent; // ix::poll will set event to nullptr if it wasn't signaled
int ret = ix::poll(fds, nfds, timeoutMs, &event);
if (ret < 0)
{
pollResult = PollResultType::Error;
}
else if (ret == 0)
{
pollResult = PollResultType::Timeout;
if (selectInterrupt && interruptFd == -1 && interruptEvent == nullptr)
{
// Emulation mode: SelectInterrupt neither supports fd nor events
// Check the selectInterrupt for requests
readSelectInterruptRequest(selectInterrupt, &pollResult);
}
}
else if ((interruptFd != -1 && fds[1].revents & POLLIN) || (interruptEvent != nullptr && event != nullptr))
{
// The InterruptEvent was signaled
readSelectInterruptRequest(selectInterrupt, &pollResult);
}
else if (sockfd != -1 && readyToRead && fds[0].revents & POLLIN)
{
pollResult = PollResultType::ReadyForRead;
}
else if (sockfd != -1 && !readyToRead && fds[0].revents & POLLOUT)
{
pollResult = PollResultType::ReadyForWrite;
#ifdef _WIN32
// On connect error, in async mode, windows will write to the exceptions fds
if (fds[0].revents & POLLERR)
{
pollResult = PollResultType::Error;
}
#else
int optval = -1;
socklen_t optlen = sizeof(optval);
// getsockopt() puts the errno value for connect into optval so 0
// means no-error.
if (getsockopt(sockfd, SOL_SOCKET, SO_ERROR, &optval, &optlen) == -1 || optval != 0)
{
pollResult = PollResultType::Error;
// set errno to optval so that external callers can have an
// appropriate error description when calling strerror
errno = optval;
}
#endif
}
else if (sockfd != -1 && (fds[0].revents & POLLERR || fds[0].revents & POLLHUP ||
fds[0].revents & POLLNVAL))
{
pollResult = PollResultType::Error;
}
return pollResult;
}
bool Socket::readSelectInterruptRequest(const SelectInterruptPtr& selectInterrupt,
PollResultType* pollResult)
{
uint64_t value = selectInterrupt->read();
if (value == SelectInterrupt::kSendRequest)
{
*pollResult = PollResultType::SendRequest;
return true;
}
else if (value == SelectInterrupt::kCloseRequest)
{
*pollResult = PollResultType::CloseRequest;
return true;
}
return false;
}
PollResultType Socket::isReadyToRead(int timeoutMs)
{
if (_sockfd == -1)
{
return PollResultType::Error;
}
bool readyToRead = true;
return poll(readyToRead, timeoutMs, _sockfd, _selectInterrupt);
}
PollResultType Socket::isReadyToWrite(int timeoutMs)
{
if (_sockfd == -1)
{
return PollResultType::Error;
}
bool readyToRead = false;
return poll(readyToRead, timeoutMs, _sockfd, _selectInterrupt);
}
// Wake up from poll/select by writing to the pipe which is watched by select
bool Socket::wakeUpFromPoll(uint64_t wakeUpCode)
{
return _selectInterrupt->notify(wakeUpCode);
}
bool Socket::isWakeUpFromPollSupported()
{
return _selectInterrupt->getFd() != -1 || _selectInterrupt->getEvent() != nullptr;
}
bool Socket::accept(std::string& errMsg)
{
if (_sockfd == -1)
{
errMsg = "Socket is uninitialized";
return false;
}
return true;
}
bool Socket::connect(const std::string& host,
int port,
std::string& errMsg,
const CancellationRequest& isCancellationRequested)
{
std::lock_guard<std::mutex> lock(_socketMutex);
if (!_selectInterrupt->clear()) return false;
_sockfd = SocketConnect::connect(host, port, errMsg, isCancellationRequested);
return _sockfd != -1;
}
void Socket::close()
{
std::lock_guard<std::mutex> lock(_socketMutex);
if (_sockfd == -1) return;
closeSocket(_sockfd);
_sockfd = -1;
}
ssize_t Socket::send(char* buffer, size_t length)
{
int flags = 0;
#ifdef MSG_NOSIGNAL
flags = MSG_NOSIGNAL;
#endif
return ::send(_sockfd, buffer, length, flags);
}
ssize_t Socket::send(const std::string& buffer)
{
return send((char*) &buffer[0], buffer.size());
}
ssize_t Socket::recv(void* buffer, size_t length)
{
int flags = 0;
#ifdef MSG_NOSIGNAL
flags = MSG_NOSIGNAL;
#endif
return ::recv(_sockfd, (char*) buffer, length, flags);
}
int Socket::getErrno()
{
int err;
#ifdef _WIN32
err = WSAGetLastError();
#else
err = errno;
#endif
return err;
}
bool Socket::isWaitNeeded()
{
int err = getErrno();
if (err == EWOULDBLOCK || err == EAGAIN || err == EINPROGRESS)
{
return true;
}
return false;
}
void Socket::closeSocket(int fd)
{
#ifdef _WIN32
closesocket(fd);
#else
::close(fd);
#endif
}
bool Socket::init(std::string& errorMsg)
{
return _selectInterrupt->init(errorMsg);
}
bool Socket::writeBytes(const std::string& str,
const CancellationRequest& isCancellationRequested)
{
int offset = 0;
int len = (int) str.size();
while (true)
{
if (isCancellationRequested && isCancellationRequested()) return false;
ssize_t ret = send((char*) &str[offset], len);
// We wrote some bytes, as needed, all good.
if (ret > 0)
{
if (ret == len)
{
return true;
}
else
{
offset += ret;
len -= ret;
continue;
}
}
// There is possibly something to be writen, try again
else if (ret < 0 && Socket::isWaitNeeded())
{
continue;
}
// There was an error during the write, abort
else
{
return false;
}
}
}
bool Socket::readByte(void* buffer, const CancellationRequest& isCancellationRequested)
{
while (true)
{
if (isCancellationRequested && isCancellationRequested()) return false;
ssize_t ret;
ret = recv(buffer, 1);
// We read one byte, as needed, all good.
if (ret == 1)
{
return true;
}
// There is possibly something to be read, try again
else if (ret < 0 && Socket::isWaitNeeded())
{
// Wait with a 1ms timeout until the socket is ready to read.
// This way we are not busy looping
if (isReadyToRead(1) == PollResultType::Error)
{
return false;
}
}
// There was an error during the read, abort
else
{
return false;
}
}
}
std::pair<bool, std::string> Socket::readLine(
const CancellationRequest& isCancellationRequested)
{
char c;
std::string line;
line.reserve(64);
for (int i = 0; i < 2 || (line[i - 2] != '\r' && line[i - 1] != '\n'); ++i)
{
if (!readByte(&c, isCancellationRequested))
{
// Return what we were able to read
return std::make_pair(false, line);
}
line += c;
}
return std::make_pair(true, line);
}
std::pair<bool, std::string> Socket::readBytes(
size_t length,
const OnProgressCallback& onProgressCallback,
const OnChunkCallback& onChunkCallback,
const CancellationRequest& isCancellationRequested)
{
std::array<uint8_t, 1 << 14> readBuffer;
std::vector<uint8_t> output;
size_t bytesRead = 0;
while (bytesRead != length)
{
if (isCancellationRequested && isCancellationRequested())
{
const std::string errorMsg("Cancellation Requested");
return std::make_pair(false, errorMsg);
}
size_t size = std::min(readBuffer.size(), length - bytesRead);
ssize_t ret = recv((char*) &readBuffer[0], size);
if (ret > 0)
{
if (onChunkCallback)
{
std::string chunk(readBuffer.begin(), readBuffer.begin() + ret);
onChunkCallback(chunk);
}
else
{
output.insert(output.end(), readBuffer.begin(), readBuffer.begin() + ret);
}
bytesRead += ret;
}
else if (ret <= 0 && !Socket::isWaitNeeded())
{
const std::string errorMsg("Recv Error");
return std::make_pair(false, errorMsg);
}
if (onProgressCallback) onProgressCallback((int) bytesRead, (int) length);
// Wait with a 1ms timeout until the socket is ready to read.
// This way we are not busy looping
if (isReadyToRead(1) == PollResultType::Error)
{
const std::string errorMsg("Poll Error");
return std::make_pair(false, errorMsg);
}
}
return std::make_pair(true, std::string(output.begin(), output.end()));
}
} // namespace ix

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/*
* IXSocket.h
* Author: Benjamin Sergeant
* Copyright (c) 2017-2018 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include <atomic>
#include <cstdint>
#include <functional>
#include <memory>
#include <mutex>
#include <string>
#ifdef __APPLE__
#include <sys/types.h>
#endif
#ifdef _WIN32
#include <basetsd.h>
#ifdef _MSC_VER
typedef SSIZE_T ssize_t;
#endif
#endif
#include "IXCancellationRequest.h"
#include "IXProgressCallback.h"
#include "IXSelectInterrupt.h"
namespace ix
{
enum class PollResultType
{
ReadyForRead = 0,
ReadyForWrite = 1,
Timeout = 2,
Error = 3,
SendRequest = 4,
CloseRequest = 5
};
class Socket
{
public:
Socket(int fd = -1);
virtual ~Socket();
bool init(std::string& errorMsg);
// Functions to check whether there is activity on the socket
PollResultType poll(int timeoutMs = kDefaultPollTimeout);
bool wakeUpFromPoll(uint64_t wakeUpCode);
bool isWakeUpFromPollSupported();
PollResultType isReadyToWrite(int timeoutMs);
PollResultType isReadyToRead(int timeoutMs);
// Virtual methods
virtual bool accept(std::string& errMsg);
virtual bool connect(const std::string& host,
int port,
std::string& errMsg,
const CancellationRequest& isCancellationRequested);
virtual void close();
virtual ssize_t send(char* buffer, size_t length);
ssize_t send(const std::string& buffer);
virtual ssize_t recv(void* buffer, size_t length);
// Blocking and cancellable versions, working with socket that can be set
// to non blocking mode. Used during HTTP upgrade.
bool readByte(void* buffer, const CancellationRequest& isCancellationRequested);
bool writeBytes(const std::string& str, const CancellationRequest& isCancellationRequested);
std::pair<bool, std::string> readLine(const CancellationRequest& isCancellationRequested);
std::pair<bool, std::string> readBytes(size_t length,
const OnProgressCallback& onProgressCallback,
const OnChunkCallback& onChunkCallback,
const CancellationRequest& isCancellationRequested);
static int getErrno();
static bool isWaitNeeded();
static void closeSocket(int fd);
static PollResultType poll(bool readyToRead,
int timeoutMs,
int sockfd,
const SelectInterruptPtr& selectInterrupt);
protected:
std::atomic<int> _sockfd;
std::mutex _socketMutex;
static bool readSelectInterruptRequest(const SelectInterruptPtr& selectInterrupt,
PollResultType* pollResult);
private:
static const int kDefaultPollTimeout;
static const int kDefaultPollNoTimeout;
SelectInterruptPtr _selectInterrupt;
};
} // namespace ix

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/*
* IXSocketAppleSSL.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2017-2020 Machine Zone, Inc. All rights reserved.
*
* Adapted from Satori SDK Apple SSL code.
*/
#ifdef IXWEBSOCKET_USE_SECURE_TRANSPORT
#include "IXSocketAppleSSL.h"
#include "IXSocketConnect.h"
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <netinet/tcp.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#define socketerrno errno
#include <Security/SecureTransport.h>
namespace ix
{
SocketAppleSSL::SocketAppleSSL(const SocketTLSOptions& tlsOptions, int fd)
: Socket(fd)
, _sslContext(nullptr)
, _tlsOptions(tlsOptions)
{
;
}
SocketAppleSSL::~SocketAppleSSL()
{
SocketAppleSSL::close();
}
std::string SocketAppleSSL::getSSLErrorDescription(OSStatus status)
{
std::string errMsg("Unknown SSL error.");
CFErrorRef error = CFErrorCreate(kCFAllocatorDefault, kCFErrorDomainOSStatus, status, NULL);
if (error)
{
CFStringRef message = CFErrorCopyDescription(error);
if (message)
{
char localBuffer[128];
Boolean success;
success = CFStringGetCString(message, localBuffer, 128, kCFStringEncodingUTF8);
if (success)
{
errMsg = localBuffer;
}
CFRelease(message);
}
CFRelease(error);
}
return errMsg;
}
OSStatus SocketAppleSSL::readFromSocket(SSLConnectionRef connection, void* data, size_t* len)
{
int fd = (int) (long) connection;
if (fd < 0) return errSSLInternal;
assert(data != nullptr);
assert(len != nullptr);
size_t requested_sz = *len;
ssize_t status = read(fd, data, requested_sz);
if (status > 0)
{
*len = (size_t) status;
if (requested_sz > *len)
{
return errSSLWouldBlock;
}
else
{
return noErr;
}
}
else if (status == 0)
{
*len = 0;
return errSSLClosedGraceful;
}
else
{
*len = 0;
switch (errno)
{
case ENOENT: return errSSLClosedGraceful;
case EAGAIN: return errSSLWouldBlock; // EWOULDBLOCK is a define for EAGAIN on osx
case EINPROGRESS: return errSSLWouldBlock;
case ECONNRESET: return errSSLClosedAbort;
default: return errSecIO;
}
}
}
OSStatus SocketAppleSSL::writeToSocket(SSLConnectionRef connection,
const void* data,
size_t* len)
{
int fd = (int) (long) connection;
if (fd < 0) return errSSLInternal;
assert(data != nullptr);
assert(len != nullptr);
size_t to_write_sz = *len;
ssize_t status = write(fd, data, to_write_sz);
if (status > 0)
{
*len = (size_t) status;
if (to_write_sz > *len)
{
return errSSLWouldBlock;
}
else
{
return noErr;
}
}
else if (status == 0)
{
*len = 0;
return errSSLClosedGraceful;
}
else
{
*len = 0;
switch (errno)
{
case ENOENT: return errSSLClosedGraceful;
case EAGAIN: return errSSLWouldBlock; // EWOULDBLOCK is a define for EAGAIN on osx
case EINPROGRESS: return errSSLWouldBlock;
case ECONNRESET: return errSSLClosedAbort;
default: return errSecIO;
}
}
}
bool SocketAppleSSL::accept(std::string& errMsg)
{
errMsg = "TLS not supported yet in server mode with apple ssl backend";
return false;
}
OSStatus SocketAppleSSL::tlsHandShake(std::string& errMsg,
const CancellationRequest& isCancellationRequested)
{
OSStatus status;
do
{
status = SSLHandshake(_sslContext);
// Interrupt the handshake
if (isCancellationRequested())
{
errMsg = "Cancellation requested";
return errSSLInternal;
}
} while (status == errSSLWouldBlock || status == errSSLServerAuthCompleted);
return status;
}
// No wait support
bool SocketAppleSSL::connect(const std::string& host,
int port,
std::string& errMsg,
const CancellationRequest& isCancellationRequested)
{
OSStatus status;
{
std::lock_guard<std::mutex> lock(_mutex);
_sockfd = SocketConnect::connect(host, port, errMsg, isCancellationRequested);
if (_sockfd == -1) return false;
_sslContext = SSLCreateContext(kCFAllocatorDefault, kSSLClientSide, kSSLStreamType);
SSLSetIOFuncs(
_sslContext, SocketAppleSSL::readFromSocket, SocketAppleSSL::writeToSocket);
SSLSetConnection(_sslContext, (SSLConnectionRef)(long) _sockfd);
SSLSetProtocolVersionMin(_sslContext, kTLSProtocol12);
if (!_tlsOptions.disable_hostname_validation)
SSLSetPeerDomainName(_sslContext, host.c_str(), host.size());
if (_tlsOptions.isPeerVerifyDisabled())
{
Boolean option(1);
SSLSetSessionOption(_sslContext, kSSLSessionOptionBreakOnServerAuth, option);
status = tlsHandShake(errMsg, isCancellationRequested);
if (status == errSSLServerAuthCompleted)
{
// proceed with the handshake
status = tlsHandShake(errMsg, isCancellationRequested);
}
}
else
{
status = tlsHandShake(errMsg, isCancellationRequested);
}
}
if (status != noErr)
{
errMsg = getSSLErrorDescription(status);
close();
return false;
}
return true;
}
void SocketAppleSSL::close()
{
std::lock_guard<std::mutex> lock(_mutex);
if (_sslContext == nullptr) return;
SSLClose(_sslContext);
CFRelease(_sslContext);
_sslContext = nullptr;
Socket::close();
}
ssize_t SocketAppleSSL::send(char* buf, size_t nbyte)
{
OSStatus status = errSSLWouldBlock;
while (status == errSSLWouldBlock)
{
size_t processed = 0;
std::lock_guard<std::mutex> lock(_mutex);
status = SSLWrite(_sslContext, buf, nbyte, &processed);
if (processed > 0) return (ssize_t) processed;
// The connection was reset, inform the caller that this
// Socket should close
if (status == errSSLClosedGraceful || status == errSSLClosedNoNotify ||
status == errSSLClosedAbort)
{
errno = ECONNRESET;
return -1;
}
if (status == errSSLWouldBlock)
{
errno = EWOULDBLOCK;
return -1;
}
}
return -1;
}
// No wait support
ssize_t SocketAppleSSL::recv(void* buf, size_t nbyte)
{
OSStatus status = errSSLWouldBlock;
while (status == errSSLWouldBlock)
{
size_t processed = 0;
std::lock_guard<std::mutex> lock(_mutex);
status = SSLRead(_sslContext, buf, nbyte, &processed);
if (processed > 0) return (ssize_t) processed;
// The connection was reset, inform the caller that this
// Socket should close
if (status == errSSLClosedGraceful || status == errSSLClosedNoNotify ||
status == errSSLClosedAbort)
{
errno = ECONNRESET;
return -1;
}
if (status == errSSLWouldBlock)
{
errno = EWOULDBLOCK;
return -1;
}
}
return -1;
}
} // namespace ix
#endif // IXWEBSOCKET_USE_SECURE_TRANSPORT

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@ -1,52 +0,0 @@
/*
* IXSocketAppleSSL.h
* Author: Benjamin Sergeant
* Copyright (c) 2017-2020 Machine Zone, Inc. All rights reserved.
*/
#ifdef IXWEBSOCKET_USE_SECURE_TRANSPORT
#pragma once
#include "IXCancellationRequest.h"
#include "IXSocket.h"
#include "IXSocketTLSOptions.h"
#include <Security/SecureTransport.h>
#include <Security/Security.h>
#include <mutex>
namespace ix
{
class SocketAppleSSL final : public Socket
{
public:
SocketAppleSSL(const SocketTLSOptions& tlsOptions, int fd = -1);
~SocketAppleSSL();
virtual bool accept(std::string& errMsg) final;
virtual bool connect(const std::string& host,
int port,
std::string& errMsg,
const CancellationRequest& isCancellationRequested) final;
virtual void close() final;
virtual ssize_t send(char* buffer, size_t length) final;
virtual ssize_t recv(void* buffer, size_t length) final;
private:
static std::string getSSLErrorDescription(OSStatus status);
static OSStatus writeToSocket(SSLConnectionRef connection, const void* data, size_t* len);
static OSStatus readFromSocket(SSLConnectionRef connection, void* data, size_t* len);
OSStatus tlsHandShake(std::string& errMsg,
const CancellationRequest& isCancellationRequested);
SSLContextRef _sslContext;
mutable std::mutex _mutex; // AppleSSL routines are not thread-safe
SocketTLSOptions _tlsOptions;
};
} // namespace ix
#endif // IXWEBSOCKET_USE_SECURE_TRANSPORT

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@ -1,151 +0,0 @@
/*
* IXSocketConnect.cpp
* Author: Benjamin Sergeant
* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
*/
#include "IXSocketConnect.h"
#include "IXDNSLookup.h"
#include "IXNetSystem.h"
#include "IXSelectInterrupt.h"
#include "IXSocket.h"
#include "IXUniquePtr.h"
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
// Android needs extra headers for TCP_NODELAY and IPPROTO_TCP
#ifdef ANDROID
#include <linux/in.h>
#include <linux/tcp.h>
#endif
#include <ixwebsocket/IXSelectInterruptFactory.h>
namespace ix
{
//
// This function can be cancelled every 50 ms
// This is important so that we don't block the main UI thread when shutting down a
// connection which is already trying to reconnect, and can be blocked waiting for
// ::connect to respond.
//
int SocketConnect::connectToAddress(const struct addrinfo* address,
std::string& errMsg,
const CancellationRequest& isCancellationRequested)
{
errMsg = "no error";
socket_t fd = socket(address->ai_family, address->ai_socktype, address->ai_protocol);
if (fd < 0)
{
errMsg = "Cannot create a socket";
return -1;
}
// Set the socket to non blocking mode, so that slow responses cannot
// block us for too long
SocketConnect::configure(fd);
int res = ::connect(fd, address->ai_addr, address->ai_addrlen);
if (res == -1 && !Socket::isWaitNeeded())
{
errMsg = strerror(Socket::getErrno());
Socket::closeSocket(fd);
return -1;
}
for (;;)
{
if (isCancellationRequested && isCancellationRequested()) // Must handle timeout as well
{
Socket::closeSocket(fd);
errMsg = "Cancelled";
return -1;
}
int timeoutMs = 10;
bool readyToRead = false;
SelectInterruptPtr selectInterrupt = ix::createSelectInterrupt();
PollResultType pollResult = Socket::poll(readyToRead, timeoutMs, fd, selectInterrupt);
if (pollResult == PollResultType::Timeout)
{
continue;
}
else if (pollResult == PollResultType::Error)
{
Socket::closeSocket(fd);
errMsg = std::string("Connect error: ") + strerror(Socket::getErrno());
return -1;
}
else if (pollResult == PollResultType::ReadyForWrite)
{
return fd;
}
else
{
Socket::closeSocket(fd);
errMsg = std::string("Connect error: ") + strerror(Socket::getErrno());
return -1;
}
}
}
int SocketConnect::connect(const std::string& hostname,
int port,
std::string& errMsg,
const CancellationRequest& isCancellationRequested)
{
//
// First do DNS resolution
//
auto dnsLookup = std::make_shared<DNSLookup>(hostname, port);
auto res = dnsLookup->resolve(errMsg, isCancellationRequested);
if (res == nullptr)
{
return -1;
}
int sockfd = -1;
// iterate through the records to find a working peer
struct addrinfo* address;
for (address = res.get(); address != nullptr; address = address->ai_next)
{
//
// Second try to connect to the remote host
//
sockfd = connectToAddress(address, errMsg, isCancellationRequested);
if (sockfd != -1)
{
break;
}
}
return sockfd;
}
// FIXME: configure is a terrible name
void SocketConnect::configure(int sockfd)
{
// 1. disable Nagle's algorithm
int flag = 1;
setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (char*) &flag, sizeof(flag));
// 2. make socket non blocking
#ifdef _WIN32
unsigned long nonblocking = 1;
ioctlsocket(sockfd, FIONBIO, &nonblocking);
#else
fcntl(sockfd, F_SETFL, O_NONBLOCK); // make socket non blocking
#endif
// 3. (apple) prevent SIGPIPE from being emitted when the remote end disconnect
#ifdef SO_NOSIGPIPE
int value = 1;
setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void*) &value, sizeof(value));
#endif
}
} // namespace ix

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/*
* IXSocketConnect.h
* Author: Benjamin Sergeant
* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
*/
#pragma once
#include "IXCancellationRequest.h"
#include <string>
struct addrinfo;
namespace ix
{
class SocketConnect
{
public:
static int connect(const std::string& hostname,
int port,
std::string& errMsg,
const CancellationRequest& isCancellationRequested);
static void configure(int sockfd);
private:
static int connectToAddress(const struct addrinfo* address,
std::string& errMsg,
const CancellationRequest& isCancellationRequested);
};
} // namespace ix

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