mdns_client.h

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/**
 * @file mdns_client.h
 * @brief mDNS client (Multicast DNS)
 *
 * @section License
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * Copyright (C) 2010-2024 Oryx Embedded SARL. All rights reserved.
 *
 * This file is part of CycloneTCP Open.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * @author Oryx Embedded SARL (www.oryx-embedded.com)
 * @version 2.4.4
 **/
 
#ifndef _MDNS_CLIENT_H
#define _MDNS_CLIENT_H
 
//Dependencies
#include "core/net.h"
#include "core/socket.h"
#include "core/udp.h"
#include "dns/dns_cache.h"
#include "dns/dns_common.h"
 
//mDNS client support
#ifndef MDNS_CLIENT_SUPPORT
   #define MDNS_CLIENT_SUPPORT DISABLED
#elif (MDNS_CLIENT_SUPPORT != ENABLED && MDNS_CLIENT_SUPPORT != DISABLED)
   #error MDNS_CLIENT_SUPPORT parameter is not valid
#endif
 
//Maximum number of retransmissions of mDNS queries
#ifndef MDNS_CLIENT_MAX_RETRIES
   #define MDNS_CLIENT_MAX_RETRIES 3
#elif (MDNS_CLIENT_MAX_RETRIES < 1)
   #error MDNS_CLIENT_MAX_RETRIES parameter is not valid
#endif
 
//Initial retransmission timeout
#ifndef MDNS_CLIENT_INIT_TIMEOUT
   #define MDNS_CLIENT_INIT_TIMEOUT 1000
#elif (MDNS_CLIENT_INIT_TIMEOUT < 1000)
   #error MDNS_CLIENT_INIT_TIMEOUT parameter is not valid
#endif
 
//Maximum retransmission timeout
#ifndef MDNS_CLIENT_MAX_TIMEOUT
   #define MDNS_CLIENT_MAX_TIMEOUT 1000
#elif (MDNS_CLIENT_MAX_TIMEOUT < 1000)
   #error MDNS_CLIENT_MAX_TIMEOUT parameter is not valid
#endif
 
//Maximum cache lifetime for mDNS entries
#ifndef MDNS_MAX_LIFETIME
   #define MDNS_MAX_LIFETIME 60000
#elif (MDNS_MAX_LIFETIME < 1000)
   #error MDNS_MAX_LIFETIME parameter is not valid
#endif
 
//Additional record generation
#ifndef MDNS_ADDITIONAL_RECORDS_SUPPORT
   #define MDNS_ADDITIONAL_RECORDS_SUPPORT ENABLED
#elif (MDNS_ADDITIONAL_RECORDS_SUPPORT != ENABLED && MDNS_ADDITIONAL_RECORDS_SUPPORT != DISABLED)
   #error MDNS_ADDITIONAL_RECORDS_SUPPORT parameter is not valid
#endif
 
//C++ guard
#ifdef __cplusplus
extern "C" {
#endif
 
//mDNS related functions
error_t mdnsClientResolve(NetInterface *interface, const char_t *name,
   HostType type, IpAddr *ipAddr);
 
error_t mdnsClientSendQuery(DnsCacheEntry *entry);
 
void mdnsClientParseAnRecord(NetInterface *interface,
   const MdnsMessage *message, size_t offset, const DnsResourceRecord *record);
 
//C++ guard
#ifdef __cplusplus
}
#endif
 
#endif