/* Copyright (c) 2007-2014 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 . */ #include "testutil.hpp" int main (void) { setup_test_environment(); void *ctx = zmq_ctx_new (); assert (ctx); // Create a publisher void *pub = zmq_socket (ctx, ZMQ_XPUB); assert (pub); int rc = zmq_bind (pub, "inproc://soname"); assert (rc == 0); // set pub socket options rc = zmq_setsockopt(pub, ZMQ_XPUB_WELCOME_MSG, "W", 1); assert (rc == 0); // Create a subscriber void *sub = zmq_socket (ctx, ZMQ_SUB); // Subscribe to the welcome message rc = zmq_setsockopt(sub, ZMQ_SUBSCRIBE, "W", 1); assert(rc == 0); assert (sub); rc = zmq_connect (sub, "inproc://soname"); assert (rc == 0); char buffer[2]; // Receive the welcome subscription rc = zmq_recv(pub, buffer, 2, 0); assert(rc == 2); assert(buffer[0] == 1); assert(buffer[1] == 'W'); // Receive the welcome message rc = zmq_recv(sub, buffer, 1, 0); printf("%d\n", rc); assert(rc == 1); assert(buffer[0] == 'W'); // Clean up. rc = zmq_close (pub); assert (rc == 0); rc = zmq_close (sub); assert (rc == 0); rc = zmq_ctx_term (ctx); assert (rc == 0); return 0 ; }