libzmq/tests/test_client_drop_more.cpp

/*
    Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file

    This file is part of 0MQ.

    0MQ is free software; you can redistribute it and/or modify it under
    the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    0MQ is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "testutil.hpp"

int send_msg(zmq_msg_t* msg, void* s, int flags, int value);

int main (void)
{
    setup_test_environment();
    void *ctx = zmq_ctx_new ();
    assert (ctx);

    void *client = zmq_socket (ctx, ZMQ_CLIENT);
    void *dealer = zmq_socket (ctx, ZMQ_DEALER);

    int rc;

    rc = zmq_bind (client, "inproc://serverdropmore");
    assert (rc == 0);

    rc = zmq_connect (dealer, "inproc://serverdropmore");
    assert (rc == 0);

    zmq_msg_t msg;
    rc = zmq_msg_init (&msg);
    assert (rc == 0);

    // we will send 2 3-frames messages and then single frame message, only last one should be received
    rc = send_msg (&msg, dealer, ZMQ_SNDMORE, 1);
    assert(rc == 1);

    rc = send_msg (&msg, dealer, ZMQ_SNDMORE, 2);
    assert(rc == 1);

    rc = send_msg (&msg, dealer, 0, 3);
    assert(rc == 1);
    
    rc = send_msg (&msg, dealer, ZMQ_SNDMORE, 4);
    assert(rc == 1);

    rc = send_msg (&msg, dealer, ZMQ_SNDMORE, 5);
    assert(rc == 1);
    
    rc = send_msg (&msg, dealer, 0, 6);
    assert(rc == 1);

    rc = send_msg (&msg, dealer, 0, 7);
    assert(rc == 1);

    rc = zmq_msg_recv (&msg, client, 0);
    assert (rc == 1);  

    assert(zmq_msg_more(&msg) == 0);

    unsigned char* data = (unsigned char*)zmq_msg_data (&msg);      
    assert (data[0] == 7);

    rc = zmq_msg_close (&msg);
    assert (rc == 0);

    rc = zmq_close (client);
    assert (rc == 0);

    rc = zmq_close (dealer);
    assert (rc == 0);

    rc = zmq_ctx_term (ctx);
    assert (rc == 0);

    return 0 ;
}

int send_msg(zmq_msg_t* msg, void* s, int flags, int value)
{
    int rc = zmq_msg_close(msg);

    if (rc != 0)
        return rc;

    zmq_msg_init_size(msg, 1);

    if (rc != 0)
        return rc;

    unsigned char* data = (unsigned char*)zmq_msg_data(msg);
    data[0] = (unsigned char)value;

    return zmq_msg_send (msg, s, flags);
}