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zeromq + msgpack
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#include <string> | |
#include <ctime> | |
#include <msgpack.hpp> | |
struct message | |
{ | |
std::string tag; | |
std::time_t time; | |
std::string text; | |
MSGPACK_DEFINE(tag, time, text); | |
}; |
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#include <unistd.h> | |
#include <iostream> | |
#include <sstream> | |
#include <string> | |
#include <zmq.hpp> | |
#include <msgpack.hpp> | |
#include "message.hpp" | |
template <typename T> | |
void publish(zmq::socket_t& socket, const std::string& tag, const T& data) | |
{ | |
msgpack::sbuffer packed; | |
msgpack::pack(&packed, data); | |
zmq::message_t tag_msg(tag.size()); | |
std::memcpy(tag_msg.data(), tag.data(), tag.size()); | |
zmq::message_t body_msg(packed.size()); | |
std::memcpy(body_msg.data(), packed.data(), packed.size()); | |
socket.send(tag_msg, ZMQ_SNDMORE); | |
socket.send(body_msg); | |
} | |
int main() | |
{ | |
zmq::context_t context(1); | |
zmq::socket_t socket(context, ZMQ_PUB); | |
socket.bind("tcp://127.0.0.1:12900"); | |
const std::string tag = "msg"; | |
while (true) | |
{ | |
const std::time_t now = std::time(0); | |
message msg; | |
msg.tag = tag; | |
msg.time = now; | |
msg.text = "hello"; | |
publish(socket, tag, msg); | |
std::cout << now << std::endl; | |
sleep(1); | |
} | |
} |
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#include <unistd.h> | |
#include <iostream> | |
#include <sstream> | |
#include <string> | |
#include <ctime> | |
#include <zmq.hpp> | |
#include <msgpack.hpp> | |
#include "message.hpp" | |
template <typename T> | |
void subscribe(zmq::socket_t& socket, T& data) | |
{ | |
zmq::message_t tag_msg, body_msg; | |
socket.recv(&tag_msg); | |
socket.recv(&body_msg); | |
const std::string tag(static_cast<const char*>(tag_msg.data()), tag_msg.size()); | |
msgpack::unpacked unpacked_body; | |
msgpack::unpack(&unpacked_body, static_cast<const char*>(body_msg.data()), body_msg.size()); | |
unpacked_body.get().convert(&data); | |
} | |
int main() | |
{ | |
zmq::context_t context(1); | |
zmq::socket_t socket(context, ZMQ_SUB); | |
socket.connect("tcp://127.0.0.1:12900"); | |
const std::string tag = "msg"; | |
socket.setsockopt(ZMQ_SUBSCRIBE, tag.c_str(), tag.size()); | |
while (true) | |
{ | |
message msg; | |
subscribe(socket, msg); | |
std::cout << msg.time << " [" << msg.tag << "] " << msg.text << std::endl; | |
} | |
} |
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