zmq poll实例

注意：此时不可以用ZMQ_REP ZMQ_REQ。  因为ZMQ_REQ发送一次数据后，如果没有收到数据，不能再次发送数据。 

 

ZmqIOServer端：

 #include <assert.h>
 #include <iostream>
 #include <tchar.h>
 #include <zmq.h>
 using namespace std;

 #pragma comment(lib,"libzmq.lib")

 void main(int argc,TCHAR*argv[])
 {
     void *ctx;
     ctx = zmq_init(1);
     assert(ctx);

     void *s1;
     s1 = zmq_socket(ctx,ZMQ_PULL);
     assert(s1);

     void *s2;
     s2 = zmq_socket(ctx,ZMQ_PULL);
     assert(s2);

     zmq_bind(s1,"tcp://127.0.0.1:6000");
     zmq_bind(s2,"tcp://127.0.0.1:7000");

     while(1)
     {
         zmq_pollitem_t items[2];
         items[0].socket = s1;
         items[0].fd = 0;
         items[0].events = ZMQ_POLLIN;

         items[1].socket = s2;
         items[1].fd = 0;
         items[1].events = ZMQ_POLLIN;
         int nRet = zmq_poll(items,2,-1);
         if(0 == nRet)
             continue;

         zmq_msg_t msg;
         char re_string[20] = {0};

         if(items[0].revents > 0)
         {
             zmq_msg_init(&msg);
             zmq_recv(s1,&msg,0);
             memcpy(re_string,(char*)zmq_msg_data(&msg),zmq_msg_size(&msg));
             cout<<"Socket1 recv : "<<re_string<<endl;
             zmq_msg_close(&msg);
         }

         if(items[1].revents > 0)
         {
             zmq_msg_init(&msg);
             zmq_recv(s2,&msg,0);
             memcpy(re_string,(char*)zmq_msg_data(&msg),zmq_msg_size(&msg));
             cout<<"Socket2 recv : "<<re_string<<endl;
             zmq_msg_close(&msg);
         }
     }

     zmq_close(s1);
     zmq_close(s2);
     zmq_term(ctx);
 }

ZmqIOClient1端：

 #include <assert.h>
 #include <iostream>
 #include <tchar.h>
 #include <zmq.h>
 using namespace std;

 #pragma comment(lib,"libzmq.lib")

 void main(int argc,TCHAR*argv[])
 {
     void *ctx;
     ctx = zmq_init(1);
     assert(ctx);

     void *s1;
     s1 = zmq_socket(ctx,ZMQ_PUSH);
     assert(s1);

     zmq_connect(s1,"tcp://127.0.0.1:6000");

     while(1)
     {
         char sd_string[20];
         cout<<"请输入sd_string:"<<endl;
         gets(sd_string);

         zmq_msg_t msg;zmq_msg_init_size(&msg,strlen(sd_string)+1);
         memcpy(zmq_msg_data(&msg),sd_string,strlen(sd_string)+1);
         zmq_send(s1,&msg,0);
         zmq_msg_close(&msg);
     }

     zmq_close(s1);
     zmq_term(ctx);
 }

ZmqIOClient2端：

 #include <assert.h>
 #include <iostream>
 #include <tchar.h>
 #include <zmq.h>
 using namespace std;

 #pragma comment(lib,"libzmq.lib")

 void main(int argc,TCHAR*argv[])
 {
     void *ctx;
     ctx = zmq_init(1);
     assert(ctx);

     void *s1;
     s1 = zmq_socket(ctx,ZMQ_PUSH);
     assert(s1);

     zmq_connect(s1,"tcp://127.0.0.1:7000");

     while(1)
     {
         char sd_string[20];
         cout<<"请输入sd_string2:"<<endl;
         gets(sd_string);

         zmq_msg_t msg;
         zmq_msg_init_size(&msg,strlen(sd_string)+1);
         memcpy(zmq_msg_data(&msg),sd_string,strlen(sd_string)+1);
         zmq_send(s1,&msg,0);
         zmq_msg_close(&msg);
     }

     zmq_close(s1);
     zmq_term(ctx);
 }