llmnr_client.h

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/**
 * @file llmnr_client.h
 * @brief LLMNR client (Link-Local Multicast Name Resolution)
 *
 * @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 _LLMNR_CLIENT_H
#define _LLMNR_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"
#include "llmnr/llmnr_common.h"
 
//LLMNR client support
#ifndef LLMNR_CLIENT_SUPPORT
   #define LLMNR_CLIENT_SUPPORT DISABLED
#elif (LLMNR_CLIENT_SUPPORT != ENABLED && LLMNR_CLIENT_SUPPORT != DISABLED)
   #error LLMNR_CLIENT_SUPPORT parameter is not valid
#endif
 
//Maximum number of retransmissions of LLMNR queries
#ifndef LLMNR_CLIENT_MAX_RETRIES
   #define LLMNR_CLIENT_MAX_RETRIES 3
#elif (LLMNR_CLIENT_MAX_RETRIES < 1)
   #error LLMNR_CLIENT_MAX_RETRIES parameter is not valid
#endif
 
//Initial retransmission timeout
#ifndef LLMNR_CLIENT_INIT_TIMEOUT
   #define LLMNR_CLIENT_INIT_TIMEOUT 1000
#elif (LLMNR_CLIENT_INIT_TIMEOUT < 1000)
   #error LLMNR_CLIENT_INIT_TIMEOUT parameter is not valid
#endif
 
//Maximum retransmission timeout
#ifndef LLMNR_CLIENT_MAX_TIMEOUT
   #define LLMNR_CLIENT_MAX_TIMEOUT 1000
#elif (LLMNR_CLIENT_MAX_TIMEOUT < 1000)
   #error LLMNR_CLIENT_MAX_TIMEOUT parameter is not valid
#endif
 
//Maximum cache lifetime for LLMNR entries
#ifndef LLMNR_MAX_LIFETIME
   #define LLMNR_MAX_LIFETIME 60000
#elif (LLMNR_MAX_LIFETIME < 1000)
   #error LLMNR_MAX_LIFETIME parameter is not valid
#endif
 
//C++ guard
#ifdef __cplusplus
extern "C" {
#endif
 
//LLMNR related functions
error_t llmnrResolve(NetInterface *interface, const char_t *name,
   HostType type, IpAddr *ipAddr);
 
error_t llmnrSendQuery(DnsCacheEntry *entry);
 
void llmnrProcessResponse(NetInterface *interface,
   const IpPseudoHeader *pseudoHeader, const UdpHeader *udpHeader,
   const NetBuffer *buffer, size_t offset, const NetRxAncillary *ancillary,
   void *param);
 
//C++ guard
#ifdef __cplusplus
}
#endif
 
#endif