mdns.h

00001 /**
00002  * @file
00003  * MDNS responder
00004  */
00005 
00006  /*
00007  * Copyright (c) 2015 Verisure Innovation AB
00008  * All rights reserved.
00009  *
00010  * Redistribution and use in source and binary forms, with or without modification,
00011  * are permitted provided that the following conditions are met:
00012  *
00013  * 1. Redistributions of source code must retain the above copyright notice,
00014  *    this list of conditions and the following disclaimer.
00015  * 2. Redistributions in binary form must reproduce the above copyright notice,
00016  *    this list of conditions and the following disclaimer in the documentation
00017  *    and/or other materials provided with the distribution.
00018  * 3. The name of the author may not be used to endorse or promote products
00019  *    derived from this software without specific prior written permission.
00020  *
00021  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
00022  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00023  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
00024  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00025  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00026  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00027  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00028  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
00029  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
00030  * OF SUCH DAMAGE.
00031  *
00032  * This file is part of the lwIP TCP/IP stack.
00033  *
00034  * Author: Erik Ekman <erik@kryo.se>
00035  *
00036  */
00037 #ifndef LWIP_HDR_MDNS_H
00038 #define LWIP_HDR_MDNS_H
00039 
00040 #include "lwip/apps/mdns_opts.h"
00041 #include "lwip/netif.h"
00042 
00043 #if LWIP_MDNS_RESPONDER
00044 
00045 enum mdns_sd_proto {
00046   DNSSD_PROTO_UDP = 0,
00047   DNSSD_PROTO_TCP = 1
00048 };
00049 
00050 #define MDNS_LABEL_MAXLEN  63
00051 
00052 struct mdns_host;
00053 struct mdns_service;
00054 
00055 /** Callback function to add text to a reply, called when generating the reply */
00056 typedef void (*service_get_txt_fn_t)(struct mdns_service *service, void *txt_userdata);
00057 
00058 void mdns_resp_init(void);
00059 
00060 err_t mdns_resp_add_netif(struct netif *netif, const char *hostname, u32_t dns_ttl);
00061 err_t mdns_resp_remove_netif(struct netif *netif);
00062 
00063 err_t mdns_resp_add_service(struct netif *netif, const char *name, const char *service, enum mdns_sd_proto proto, u16_t port, u32_t dns_ttl, service_get_txt_fn_t txt_fn, void *txt_userdata);
00064 err_t mdns_resp_add_service_txtitem(struct mdns_service *service, const char *txt, u8_t txt_len);
00065 void mdns_resp_netif_settings_changed(struct netif *netif);
00066 
00067 #endif /* LWIP_MDNS_RESPONDER */
00068 
00069 #endif /* LWIP_HDR_MDNS_H */