+add utf-8 validation code, not hooked up properly yet

+ws autobahn / Add code to test websocket client compliance with the autobahn test-suite
+Ping received with a payload too large (> 125 bytes) trigger a connection closure
+cobra / add tracking about published messages
+cobra / publish returns a message id, that can be used when
+cobra / new message type in the message received handler when publish/ok is received (can be used to implement an ack system).

ws/ixcobra/IXCobraMetricsThreadedPublisher.cpp

@@ -25,7 +25,8 @@ namespace ix
             (ix::CobraConnectionEventType eventType,
              const std::string& errMsg,
              const ix::WebSocketHttpHeaders& headers,
-             const std::string& subscriptionId)
+             const std::string& subscriptionId,
+             CobraConnection::MsgId msgId)
             {
                 std::stringstream ss;
 
@@ -58,6 +59,10 @@ namespace ix
                 {
                     ss << "Unsubscribed through subscription id: " << subscriptionId;
                 }
+                else if (eventType == ix::CobraConnection_EventType_Published)
+                {
+                    ss << "Published message " << msgId << " acked";
+                }
 
                 ix::IXCoreLogger::Log(ss.str().c_str());
         });