MsgPackProblem.c

typedef struct center {
	center() : x(0), y(0), z(0) {}
	int x;
	int y;
	int z;
	MSGPACK_DEFINE(x, y, z);
};

typedef struct normal {
	normal() : x(0), y(0), z(0) {}
	int x;
	int y;
	int z;
	MSGPACK_DEFINE(x, y, z);
};

typedef struct circle_3d {
	circle_3d() : radius(0) {}
	int radius;

	MSGPACK_DEFINE(MSGPACK_DEFINE(center), MSGPACK_DEFINE(normal), radius);
};


typedef struct PupilTopStruct {
	PupilTopStruct() : confidence(0), timestamp(0) {} //Default Values
	std::string topic;
	double confidence;
	int timestamp;

	MSGPACK_DEFINE(topic, MSGPACK_DEFINE(circle_3d), confidence, timestamp);
};



		zmq::message_t info;
		subSocket->recv(&info);
		char* payload = static_cast<char*>(info.data());
		std::string  rplInfo = std::string(payload, info.size());
		       
		msgpack::object_handle result;
		result = msgpack::unpack(payload, info.size());
		msgpack::object obj(result.get());

		printf(" \nINFO.Data : \n");
		msgpack::object_handle oh = msgpack::unpack(payload, info.size());
		msgpack::object deserialized = oh.get();
		std::cout << deserialized << std::endl;

		//PupilStruct rvec;
		PupilClass rvec;
		deserialized.convert(rvec);