Add a delay to shutdown after the socket closes to give time for proc…

…essing received packets

src/impl/tcptransport.cpp

@@ -462,6 +462,11 @@ void TcpTransport::process(PollService::Event event) {
 		PLOG_ERROR << e.what();
 	}
 
+	// Allow any received messages to be processed before we shut down and destroy the callbacks
+	// This should probably be a mutex or check of a queue size or something, but I can't figure out
+	// what to do that against and a 100ms delay seems to be plenty
+
+	usleep(100 * 1000);
 	PLOG_INFO << "TCP disconnected";
 	PollService::Instance().remove(mSock);
 	changeState(State::Disconnected);