mdns_client.h File Reference

mDNS client (Multicast DNS) More...

#include "core/net.h"
#include "core/socket.h"
#include "core/udp.h"
#include "dns/dns_cache.h"
#include "dns/dns_common.h"

Go to the source code of this file.


#define MDNS_MAX_LIFETIME   60000


error_t mdnsClientResolve (NetInterface *interface, const char_t *name, HostType type, IpAddr *ipAddr)
 Resolve a host name using mDNS. More...
error_t mdnsClientSendQuery (DnsCacheEntry *entry)
 Send a mDNS query message. More...
void mdnsClientParseAnRecord (NetInterface *interface, const MdnsMessage *message, size_t offset, const DnsResourceRecord *record)
 Parse a resource record from the Answer Section. More...

Detailed Description

mDNS client (Multicast DNS)


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.

Oryx Embedded SARL (

Definition in file mdns_client.h.

Macro Definition Documentation



Definition at line 57 of file mdns_client.h.



Definition at line 50 of file mdns_client.h.



Definition at line 64 of file mdns_client.h.



Definition at line 43 of file mdns_client.h.


#define MDNS_MAX_LIFETIME   60000

Definition at line 71 of file mdns_client.h.

Function Documentation

◆ mdnsClientParseAnRecord()

void mdnsClientParseAnRecord ( NetInterface interface,
const MdnsMessage message,
size_t  offset,
const DnsResourceRecord record 

Parse a resource record from the Answer Section.

[in]interfaceUnderlying network interface
[in]messagePointer to the mDNS message
[in]offsetOffset to first byte of the resource record
[in]recordPointer to the resource record

Definition at line 257 of file mdns_client.c.

◆ mdnsClientResolve()

error_t mdnsClientResolve ( NetInterface interface,
const char_t name,
HostType  type,
IpAddr ipAddr 

Resolve a host name using mDNS.

[in]interfaceUnderlying network interface
[in]nameName of the host to be resolved
[in]typeHost type (IPv4 or IPv6)
[out]ipAddrIP address corresponding to the specified host name

Definition at line 55 of file mdns_client.c.

◆ mdnsClientSendQuery()

error_t mdnsClientSendQuery ( DnsCacheEntry entry)

Send a mDNS query message.

[in]entryPointer to a valid DNS cache entry
Error code

Definition at line 196 of file mdns_client.c.