fix concretemessage

test/test_message.cpp

@@ -12,7 +12,7 @@
 #include <fstream>
 #include <iostream>
 
-enum class PacketID { KeepAlive = 0 };
+enum class PacketID { KeepAlive = 0, MDC = 1 };
 
 class PacketHandler;
 
@@ -27,8 +27,9 @@ struct KeepAlivePacket {
 };
 
 using KeepAliveMessage = Message<KeepAlivePacket, PacketID::KeepAlive>;
+using MDCMessage = Message<KeepAlivePacket, PacketID::MDC>;
 
-using AllMessages = std::tuple<KeepAliveMessage>;
+using AllMessages = std::tuple<KeepAliveMessage, MDCMessage>;
 
 class PacketHandler : public sp::GenericHandler<AllMessages> {};
 
@@ -37,6 +38,9 @@ class MyHandler : public PacketHandler {
 	virtual void Handle(const KeepAliveMessage& msg) override {
 		std::cout << "I recieved a keep alive : " << *msg->one << " : " << *msg->two << "\n";
 	}
+	virtual void Handle(const MDCMessage& msg) override {
+		std::cout << "I recieved a keep alive : " << *msg->one << " : " << *msg->two << "\n";
+	}
 };
 
 using PacketDispatcher = sp::MessageDispatcher<PacketBase>;