Feature/httpd (#94)

* Stub code for http server

* can send a response, cannot process body yet

* write headers to the response

* remove commented code

* add simple test + set default http handler

* tweak CI + unittest

* add missing file

* rewrite http::trim in a simple way

* doc

ws/CMakeLists.txt

@@ -68,6 +68,7 @@ add_executable(ws
   ws_cobra_to_statsd.cpp
   ws_cobra_to_sentry.cpp
   ws_snake.cpp
+  ws_httpd.cpp
   ws.cpp)
 
 target_link_libraries(ws ixwebsocket)

ws/ws.cpp

@@ -216,6 +216,10 @@ int main(int argc, char** argv)
         ->check(CLI::ExistingPath);
     runApp->add_flag("-v", verbose, "Verbose");
 
+    CLI::App* httpServerApp = app.add_subcommand("httpd", "HTTP server");
+    httpServerApp->add_option("--port", port, "Port");
+    httpServerApp->add_option("--host", hostname, "Hostname");
+
     CLI11_PARSE(app, argc, argv);
 
     // pid file handling
@@ -313,6 +317,10 @@ int main(int argc, char** argv)
                                 redisPassword, verbose,
                                 appsConfigPath);
     }
+    else if (app.got_subcommand("httpd"))
+    {
+        ret = ix::ws_httpd_main(port, hostname);
+    }
 
     ix::uninitNetSystem();
     return ret;

ws/ws.h

@@ -93,4 +93,6 @@ namespace ix
                       const std::string& redisPassword,
                       bool verbose,
                       const std::string& appsConfigPath);
+
+    int ws_httpd_main(int port, const std::string& hostname);
 } // namespace ix

ws/ws_httpd.cpp

@@ -0,0 +1,34 @@
+/*
+ *  ws_httpd.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
+ */
+
+#include <iostream>
+#include <vector>
+#include <fstream>
+#include <sstream>
+#include <ixwebsocket/IXHttpServer.h>
+#include <spdlog/spdlog.h>
+
+namespace ix
+{
+    int ws_httpd_main(int port, const std::string& hostname)
+    {
+        spdlog::info("Listening on {}:{}", hostname, port);
+
+        ix::HttpServer server(port, hostname);
+
+        auto res = server.listen();
+        if (!res.first)
+        {
+            std::cerr << res.second << std::endl;
+            return 1;
+        }
+
+        server.start();
+        server.wait();
+
+        return 0;
+    }
+}