zmq linux demo

worker端

#include <zmq.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>

int main (void)
{
    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");

    int request_nbr;
    for (request_nbr = 0; request_nbr != 10; request_nbr++) {
        char buffer [10];
        printf ("Sending Hello %d…\n", request_nbr);
        zmq_send (requester, "Hello", 5, 0);
        zmq_recv (requester, buffer, 10, 0);
        printf ("Received World %d\n", request_nbr);
    }

    zmq_close (requester);
    zmq_ctx_destroy (context);

    return 0;
}

server side:

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <assert.h>
#include <zmq.h>

int main (void)
{
    //  Socket to talk to clients
    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 [10];
        zmq_recv (responder, buffer, 10, 0);
        printf ("Received Hello\n");
        sleep (1);          //  Do some 'work'
        zmq_send (responder, "World", 5, 0);
    }
    return 0;
}

run:

g++ zmqserver.cpp -o zmqserverdemo -lzmq
//生成服务器文件，后面的lzmq一定要加。是一个链接zmq的核心库
 g++ zmqworker.cpp -o zmqworker -lzmq
//生成worker端文件
//运行：开启两个终端
./zmqserverdemo
./zmqworker

Need to install the library:

git clone https://github.com/zeromq/libzmq
cd libzmq
./autogen.sh
./configure 
make
sudo make check
sudo make install
sudo ldconfig
cd ..

In order to be able to use c++ for linking, the operations needed are:

git clone https://github.com/zeromq/cppzmq.git
cd cppzmq
sudo cp zmq.hpp /usr/local/include/
cd ..

//If you do not do this step, you may not find the zmq.hpp file

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