add -6 option to ws echo_server / cf #148

ws/ws.cpp

@@ -94,6 +94,7 @@ int main(int argc, char** argv)
     bool disableAutomaticReconnection = false;
     bool disablePerMessageDeflate = false;
     bool greetings = false;
+    bool ipv6 = false;
     bool binaryMode = false;
     bool redirect = false;
     bool version = false;
@@ -171,6 +172,7 @@ int main(int argc, char** argv)
     echoServerApp->add_option("--port", port, "Port");
     echoServerApp->add_option("--host", hostname, "Hostname");
     echoServerApp->add_flag("-g", greetings, "Verbose");
+    echoServerApp->add_flag("-6", ipv6, "IpV6");
     addTLSOptions(echoServerApp);
 
     CLI::App* broadcastServerApp = app.add_subcommand("broadcast_server", "Broadcasting server");
@@ -390,7 +392,7 @@ int main(int argc, char** argv)
     }
     else if (app.got_subcommand("echo_server"))
     {
-        ret = ix::ws_echo_server_main(port, greetings, hostname, tlsOptions);
+        ret = ix::ws_echo_server_main(port, greetings, hostname, tlsOptions, ipv6);
     }
     else if (app.got_subcommand("broadcast_server"))
     {

ws/ws.h

@@ -29,7 +29,9 @@ namespace ix
     int ws_echo_server_main(int port,
                             bool greetings,
                             const std::string& hostname,
-                            const ix::SocketTLSOptions& tlsOptions);
+                            const ix::SocketTLSOptions& tlsOptions,
+                            bool ipv6);
+
     int ws_broadcast_server_main(int port,
                                  const std::string& hostname,
                                  const ix::SocketTLSOptions& tlsOptions);

ws/ws_echo_server.cpp

@@ -5,6 +5,7 @@
  */
 
 #include <ixwebsocket/IXWebSocketServer.h>
+#include <ixwebsocket/IXNetSystem.h>
 #include <spdlog/spdlog.h>
 #include <sstream>
 
@@ -13,11 +14,18 @@ namespace ix
     int ws_echo_server_main(int port,
                             bool greetings,
                             const std::string& hostname,
-                            const ix::SocketTLSOptions& tlsOptions)
+                            const ix::SocketTLSOptions& tlsOptions,
+                            bool ipv6)
     {
         spdlog::info("Listening on {}:{}", hostname, port);
 
-        ix::WebSocketServer server(port, hostname);
+        ix::WebSocketServer server(port,
+                                   hostname,
+                                   SocketServer::kDefaultTcpBacklog,
+                                   SocketServer::kDefaultMaxConnections,
+                                   WebSocketServer::kDefaultHandShakeTimeoutSecs,
+                                   (ipv6) ? AF_INET6 : AF_INET);
+
         server.setTLSOptions(tlsOptions);
 
         server.setOnConnectionCallback(