lwip/contrib/examples/mdns/mdns_example.c

/*
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 * 
 * Author: Dirk Ziegelmeier <dziegel@gmx.de>
 *
 */

#include "lwip/apps/mdns.h"
#include "mdns_example.h"

#if LWIP_MDNS_RESPONDER
static void
srv_txt(struct mdns_service *service, void *txt_userdata)
{
  err_t res;
  LWIP_UNUSED_ARG(txt_userdata);
  
  res = mdns_resp_add_service_txtitem(service, "path=/", 6);
  LWIP_ERROR("mdns add service txt failed\n", (res == ERR_OK), return);
}
#endif

#if LWIP_MDNS_RESPONDER
static void
mdns_example_report(struct netif* netif, u8_t result, s8_t service)
{
  LWIP_PLATFORM_DIAG(("mdns status[netif %d][service %d]: %d\n", netif->num, service, result));
}
#endif

void
mdns_example_init(void)
{
#if LWIP_MDNS_RESPONDER
  mdns_resp_register_name_result_cb(mdns_example_report);
  mdns_resp_init();
  mdns_resp_add_netif(netif_default, "lwip");
  mdns_resp_add_service(netif_default, "myweb", "_http", DNSSD_PROTO_TCP, 80, srv_txt, NULL);
  mdns_resp_announce(netif_default);
#endif
}