ZeroMQ入门示例

一、一问一答模式

服务端代码：

// server.cpp#include "./include/zmq.h"#pragma comment(lib, "libzmq.lib")int _tmain(int argc, _TCHAR* argv[]){void *context = zmq_ctx_new();void *responder = zmq_socket(context, ZMQ_REP);int rc = zmq_bind(responder, "tcp://*:5555");assert(rc == 0);while (1) {char buffer[11] = { 0 };zmq_recv(responder, buffer, 10, 0);printf("Received: %s\n", buffer);zmq_send(responder, "World", 5, 0);}return 0;}

客户端代码：

// client.cpp#include "include/zmq.h"#pragma comment(lib, "libzmq.lib")int _tmain(int argc, _TCHAR* argv[]){printf("Connecting to hello world server…\n");void *context = zmq_ctx_new();void *requester = zmq_socket(context, ZMQ_REQ);zmq_connect(requester, "tcp://localhost:5555");zmq_send(requester, "Hello", 5, 0);char buffer[11] = { 0 };zmq_recv(requester, buffer, 10, 0);printf("Received: %s\n", buffer);zmq_close(requester);zmq_ctx_destroy(context);return 0;}

二、 消息订阅模式

消息发布者代码：

// Publisher.cppint _tmain(int argc, _TCHAR* argv[]){void *context = zmq_ctx_new();void *publisher = zmq_socket(context, ZMQ_PUB);int rc = zmq_bind(publisher, "tcp://*:5556");assert(rc == 0);while (1) {// Send timestamp to all subscriberschar timestamp[31] = { 0 };sprintf(timestamp, "timestamp %ld", time(NULL));int size = zmq_send(publisher, timestamp, 30, 0);Sleep(5000);}zmq_close(publisher);zmq_ctx_destroy(context);return 0;}

消息订阅者代码：

// Subscribe.cppint _tmain(int argc, _TCHAR* argv[]){void *context = zmq_ctx_new ();void *subscriber = zmq_socket (context, ZMQ_SUB);int rc = zmq_connect (subscriber, "tcp://localhost:5556");assert (rc == 0);char *filter = "timestamp ";rc = zmq_setsockopt (subscriber, ZMQ_SUBSCRIBE, filter, strlen (filter));assert (rc == 0);char buffer[256] = {0};int size = zmq_recv (subscriber, buffer, 255, 0);printf("Timestamp: %s\n", buffer);zmq_close (subscriber);zmq_ctx_destroy (context);return 0;}