/* myservice.c: Service (publisher) component.
 *
 * Copyright (C) 2011 VMware, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

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

#define ERR_EXIT(what) { \
    fprintf (stderr, "error in %s: %s\n", what, zmq_strerror (errno)); \
    exit (EXIT_FAILURE); \
    }

int main (int argc, char *argv [])
{
    const char *bind_to;
    const char *message = "MESSAGE";
    void *ctx;
    void *s;
    int rc;

    if (argc != 2) {
        fprintf (stderr, "usage: myservice <service-bind-ep>\n");
	exit (EXIT_FAILURE);
    }
    bind_to = argv [1];

    ctx = zmq_init (1);
    if (!ctx)
	ERR_EXIT ("zmq_init");

    s = zmq_socket (ctx, ZMQ_PUB);
    if (!s)
	ERR_EXIT ("zmq_socket");

    rc = zmq_bind (s, bind_to);
    if (rc != 0)
	ERR_EXIT ("zmq_bind");

    for (;;) {
        rc = zmq_send (s, message, sizeof message, 0);
        if (rc != sizeof message)
	    ERR_EXIT ("zmq_send");

        sleep (1);
    }

    exit (EXIT_SUCCESS);
}