C++ s_recv函数代码示例

int main(){

    void* context = zmq_init(1);
    void* receiver = zmq_socket(context, ZMQ_PULL);

    zmq_bind(receiver, "tcp://*:5558");

    //wait for start of batch
    char *string = s_recv(receiver);
    free(string);

    //start clock
    int64_t start_time = s_clock();

    //process 100
    int tasks_nbr;
    for( tasks_nbr = 0; tasks_nbr < 100; tasks_nbr++){
        char* string = s_recv(receiver);
        if((tasks_nbr / 10)*10 == tasks_nbr){
            printf(":");
        } else{
            printf(".");
        }
        fflush(stdout);
    }

    printf("Total elapsed time: %d msec\n", 
            (int)(s_clock() - start_time));

    zmq_close(receiver);
    zmq_term(context);
    return 0;
}

static void *
worker_task (void *args)
{
    void *context = zmq_ctx_new ();
    void *worker = zmq_socket (context, ZMQ_REQ);
    s_set_id (worker);          //  Set a printable identity
    zmq_connect (worker, "ipc://backend.ipc");

    //  Tell broker we're ready for work
    s_send (worker, "READY");

    while (1) {
        //  Read and save all frames until we get an empty frame
        //  In this example there is only 1 but it could be more
        char *identity = s_recv (worker);
        char *empty = s_recv (worker);
        assert (*empty == 0);
        free (empty);

        //  Get request, send reply
        char *request = s_recv (worker);
        printf ("Worker: %s\n", request);
        free (request);

        s_sendmore (worker, identity);
        s_sendmore (worker, "");
        s_send     (worker, "OK");
        free (identity);
    }
    zmq_close (worker);
    zmq_ctx_destroy (context);
    return NULL;
}

//  Worker using REQ socket to do LRU routing
//
static void *
worker_thread (void *arg) {
	zmq::context_t context(1);
    zmq::socket_t worker (context, ZMQ_REQ);
    s_set_id (worker);          //  Makes tracing easier
    worker.connect("ipc://backend.ipc");

    //  Tell backend we're ready for work
    s_send (worker, "READY");

    while (1) {
        //  Read and save all frames until we get an empty frame
        //  In this example there is only 1 but it could be more
        std::string address = s_recv (worker);
        {
            std::string empty = s_recv (worker);
            assert (empty.size() == 0);
        }

        //  Get request, send reply
        std::string request = s_recv (worker);
        std::cout << "Worker: " << request << std::endl;

        s_sendmore (worker, address);
        s_sendmore (worker, "");
        s_send     (worker, "OK");
    }
    return (NULL);
}

int main(int argc, char* argv[]) {

  zmq::context_t context(1);

  zmq::socket_t subscriber(context, ZMQ_SUB);
  subscriber.connect("tcp://localhost:5561");
  subscriber.setsockopt(ZMQ_SUBSCRIBE, "", 0);

  zmq::socket_t syncclient(context, ZMQ_REQ);
  syncclient.connect("tcp://localhost:5562");

  s_send(syncclient, "");

  s_recv(syncclient);
  std::cout << "Connected to subscriber" << std::endl;
  
  int update_nbr = 0;
  while(1) {
    if (s_recv(subscriber).compare("END") == 0) {
      std::cout << "FINE" << std::endl;
      break;
    }

    update_nbr++;
  }

  std::cout << "Received " << update_nbr << "updates" << std::endl;

  return 0;
}

//  Worker using REQ socket to do LRU routing
//
static void *
worker_thread (void *args) {
    void *context = zmq_init (1);
    void *worker = zmq_socket (context, ZMQ_REQ);
    s_set_id (worker);          //  Makes tracing easier
    zmq_connect (worker, "ipc://backend.ipc");

    //  Tell broker we're ready for work
    s_send (worker, "READY");

    while (1) {
        //  Read and save all frames until we get an empty frame
        //  In this example there is only 1 but it could be more
        char *address = s_recv (worker);
        char *empty = s_recv (worker);
        assert (*empty == 0);
        free (empty);

        //  Get request, send reply
        char *request = s_recv (worker);
        printf ("Worker: %s\n", request);
        free (request);

        s_sendmore (worker, address);
        s_sendmore (worker, "");
        s_send     (worker, "OK");
        free (address);
    }
    zmq_close (worker);
    zmq_term (context);
    return NULL;
}

void str_recv_from (void *s_, char **ptr_content_, char **ptr_address_)
{
    *ptr_address_ = s_recv (s_);
    assert (ptr_address_);

    *ptr_content_ = s_recv (s_);
    assert (ptr_content_);
}

int
main (void)
{
	void *context;
	void *subscriber1;
	void *subscriber2;
	char *filter;
	int i;
	int ok;

	context = zmq_ctx_new ();
	subscriber1 = zmq_socket (context, ZMQ_SUB);
	printf ("connecting...\n");
	ok = zmq_connect (subscriber1, "tcp://localhost:5000");
	assert (ok == 0);

	subscriber2 = zmq_socket (context, ZMQ_SUB);
	ok = zmq_connect (subscriber2, "tcp://localhost:5001");
	assert (ok == 0);
	printf ("connected.\n");

	printf ("set filters...\n");
	filter = "filter1";
	ok = zmq_setsockopt (subscriber1,
			     ZMQ_SUBSCRIBE,
			     filter,
			     strlen (filter));
	assert (ok == 0);

	filter = "filter2";
	ok = zmq_setsockopt (subscriber2,
			     ZMQ_SUBSCRIBE,
			     filter,
			     strlen (filter));
	assert (ok == 0);
	printf ("filters set.\n");

	printf ("receiving messages...\n");
	for (i = 0; i < 3; i++)
	{
		char *msg = s_recv (subscriber1);
		printf ("%s\n", msg);
		free (msg);
	}

	for (i = 0; i < 3; i++)
	{
		char *msg = s_recv (subscriber2);
		printf ("%s\n", msg);
		free (msg);
	}

	zmq_close (subscriber1);
	zmq_close (subscriber2);
	zmq_ctx_destroy (context);
	return 0;
}

int main(int argc, char *argv[])
{
    void *ctx, *handler, *thread, *server, *client;
    const char *domain, *connect_addr;
    int optval;

    domain = argc > 1 ? argv[1] : "test";
    connect_addr = strcmp(domain, "fail") ? "tcp://127.0.0.1:9000" : "tcp://127.0.0.1:9001";

    assert((ctx = zmq_ctx_new()));

    /* Start ZAP handler thread. */
    assert((handler = zmq_socket(ctx, ZMQ_REP)));
    assert(!(zmq_bind(handler, "inproc://zeromq.zap.01")));
    assert((thread = zmq_threadstart(zap_handler, handler)));

    /* Bind server. */
    assert((server = zmq_socket(ctx, ZMQ_DEALER)));
    assert(!(zmq_setsockopt(server, ZMQ_ZAP_DOMAIN, domain, strlen(domain))));
    assert(!zmq_bind(server, "tcp://127.0.0.1:9000"));

    /* Connect client. */
    assert((client = zmq_socket(ctx, ZMQ_DEALER)));
    optval = 200;
    assert(!(zmq_setsockopt(client, ZMQ_RECONNECT_IVL, &optval, sizeof(optval))));
    optval = 5000;
    assert(!(zmq_setsockopt(client, ZMQ_RECONNECT_IVL_MAX, &optval, sizeof(optval))));
    optval = 30000;
    assert(!(zmq_setsockopt(client, ZMQ_SNDTIMEO, &optval, sizeof(optval))));
    optval = 1;
    assert(!(zmq_setsockopt(client, ZMQ_IMMEDIATE, &optval, sizeof(optval))));
    assert(!zmq_connect(client, connect_addr));

    /* Bounce test. */
    s_send(client, "Hello, Server!");
    assert(!strcmp(s_recv(server), "Hello, Server!"));
    s_send(server, "Hello, Client!");
    assert(!strcmp(s_recv(client), "Hello, Client!"));

    /* Cleanup. */
    assert(!zmq_disconnect(client, connect_addr));
    assert(!zmq_close(client));

    assert(!zmq_unbind(server, "tcp://127.0.0.1:9000"));
    assert(!zmq_close(server));

    assert(!zmq_term(ctx));
    zmq_threadclose(thread);

    return 0;
}

// pubRequest by one of the Satellites, this Server just forwards it by publishing it
bool ReefServer::pubRequest(RMessage& msg){
	msg = RMessage();
	bool retBool;
	std::string tagsStr = s_recv(rep); //receive message tags
	std::string bodyStr = s_recv(rep); //receive messagebody
	CJsonArray tagsArray = jsonToArray(tagsStr); //parse Tags
	tagsInitMessage(msg, tagsArray); //initiate msg with the tags
	tagsArray.Clear();

	retBool = checkInterestAndProcess(msg, bodyStr);
	s_sendmore(publisher, ""); //send empty envelope
	s_sendmore(publisher, tagsStr);	//receive tag-part of message and publish it
	s_send(publisher, bodyStr); //receive body-part of message and publish it
	return retBool;
}

int main(void)
{
    //Create ZMQ Socket
    void *context = zmq_ctx_new();
    
    //Socket to receive messages
    void *receiver = zmq_socket(context, ZMQ_PULL);
    zmq_bind(receiver, "tcp://*:5558");
    
    //Socket to control workers
    void *controller = zmq_socket(context, ZMQ_PUB);
    zmq_bind(controller, "tcp://*:5559");
    
    //Waiting for start 
    char *string = s_recv(receiver);
    free(string);
    
    //Start clock
    int64_t start_time = s_clock();
    
    //Process messages
    int task_nbr;
    for(task_nbr = 0; task_nbr < 100; task_nbr++)
    {
        char *string = s_recv(receiver);
        free(string);
        if((task_nbr / 10) * 10 == task_nbr)
        {
            printf(":");
        }
        else
        {
            printf(".");
        }
        fflush(stdout);
    }
    
    printf("Total elapsed time: %d msec\n", (int)(s_clock()-start_time));
    
    //Send Kille signal
    s_send(controller, "KILL");
    
    zmq_close(receiver);
    zmq_close(controller);
    zmq_ctx_destroy(context);
    
    return 0;
}

static void *
worker_thread (void *arg) {

    zmq::context_t * context = (zmq::context_t *)arg;
    zmq::socket_t worker (*context, ZMQ_REQ);
    
    //  We use a string identity for ease here
    s_set_id (worker);
    worker.connect("ipc://routing.ipc");

    int total = 0;
    while (1) {
        //  Tell the router we're ready for work
        s_send (worker, "ready");

        //  Get workload from router, until finished
        std::string workload = s_recv (worker);
        int finished = (workload.compare("END") == 0);
        
        if (finished) {
            std::cout << "Processed: " << total << " tasks" << std::endl;
            break;
        }
        total++;

        //  Do some random work
        s_sleep(within (100) + 1);
    }
    return (NULL);
}

int main (int argc, char *argv [])
{
  // Socket to talk to server
  printf ("Collecting updates from weather server…\n");
  void *context = zmq_ctx_new ();
  void *subscriber = zmq_socket (context, ZMQ_SUB);
  int rc = zmq_connect (subscriber, "tcp://localhost:5556");
  assert (rc == 0);

  // Subscribe to zipcode, default is NYC, 10001
  char *filter = (argc > 1)? argv [1]: "10001 ";
  rc = zmq_setsockopt (subscriber, ZMQ_SUBSCRIBE,
		       filter, strlen (filter));
  assert (rc == 0);

  // Process 100 updates
  int update_nbr;
  long total_temp = 0;
  for (update_nbr = 0; update_nbr < 100; update_nbr++) {
    char *string = s_recv (subscriber);

    int zipcode, temperature, relhumidity;
    sscanf (string, "%d %d %d",
	    &zipcode, &temperature, &relhumidity);
    total_temp += temperature;
    free (string);
  }
  printf ("Average temperature for zipcode '%s' was %dF\n",
	  filter, (int) (total_temp / update_nbr));

  zmq_close (subscriber);
  zmq_ctx_destroy (context);
  return 0;
}

void test_plain_vanilla_socket ()
{
    // Unauthenticated messages from a vanilla socket shouldn't be received
    struct sockaddr_in ip4addr;
    fd_t s;

    unsigned short int port;
    int rc = sscanf (my_endpoint, "tcp://127.0.0.1:%hu", &port);
    TEST_ASSERT_EQUAL_INT (1, rc);

    ip4addr.sin_family = AF_INET;
    ip4addr.sin_port = htons (port);
#if defined(ZMQ_HAVE_WINDOWS) && (_WIN32_WINNT < 0x0600)
    ip4addr.sin_addr.s_addr = inet_addr ("127.0.0.1");
#else
    inet_pton (AF_INET, "127.0.0.1", &ip4addr.sin_addr);
#endif

    s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
    rc = connect (s, (struct sockaddr *) &ip4addr, sizeof (ip4addr));
    TEST_ASSERT_GREATER_THAN_INT (-1, rc);
    // send anonymous ZMTP/1.0 greeting
    send (s, "\x01\x00", 2, 0);
    // send sneaky message that shouldn't be received
    send (s, "\x08\x00sneaky\0", 9, 0);
    int timeout = 250;
    zmq_setsockopt (server, ZMQ_RCVTIMEO, &timeout, sizeof (timeout));
    char *buf = s_recv (server);
    if (buf != NULL) {
        printf ("Received unauthenticated message: %s\n", buf);
        TEST_ASSERT_NULL (buf);
    }
    close (s);
}

int main(void)
{
    void *context = zmq_ctx_new();
    void *socket = zmq_socket(context, ZMQ_REP);
    zmq_bind(socket, "tcp://*:5555");

    s_catch_signals();
#if 1
    while (1) {
        // Blocking read will exit on a signal
        char buffer[255];
        zmq_recv(socket, buffer, 255, 0);
        if (s_interrupted) {
            printf("W: interrupt received, killing server...\n");
            break;
        }
    }
#else
    while (!s_interrupted) {
        char *message = s_recv(socket);
        if (!message) {
            break;
        }
    }
#endif

    zmq_close(socket);
    zmq_ctx_destroy(context);

#ifdef _MSC_VER
    system("pause");
#endif
    return 0;
}

void replay(void *arg) {
	void *slave = zmq_socket(arg, ZMQ_REQ);
	/*
	if (done % 2) {
		zmq_connect (slave, "tcp://localhost:5562");
	}
	else {
		zmq_connect (slave, "tcp://localhost:5563");
	}*/
	zmq_connect (slave, "tcp://localhost:5562");

	char *string;
	char buf[1024];
	sprintf(buf, "%d", rand());
	s_send(slave, buf);
	string = s_recv(slave);
	if (strcmp(string , buf) != 0) {
		debug_puts("ERROR");
	}
	free(string);
    pthread_mutex_lock(&lock);
    done++;
    pthread_mutex_unlock(&lock);
	zmq_close(slave);
}