69 lines
2.8 KiB
Markdown
69 lines
2.8 KiB
Markdown
tinysvcmdns
|
|
============
|
|
tinysvcmdns is a tiny MDNS responder implementation for publishing services.
|
|
|
|
This implementation is only concerned with publishing services, without a
|
|
system-wide daemon like Bonjour or Avahi. Its other goal is to be extremely
|
|
small, embeddable, and have no external dependencies.
|
|
|
|
It only answers queries related to its own hostname (the A record), the
|
|
service PTRs, and the "_services.dns-sd._udp.local" name, which advertises
|
|
all services on a particular host.
|
|
|
|
Services consist of a single SRV and TXT record.
|
|
|
|
Decoding of MDNS packets is only done to retrieve the questions and answer RRs.
|
|
The purpose for decoding answer RRs is to make sure the service PTR is not
|
|
sent out if it is already included in the answer RRs.
|
|
|
|
It also only utilizes multicast packets, so no "QU" queries are accepted.
|
|
|
|
There is no name collision detection, so this means no queries are generated
|
|
before publishing the services. However compliant responders will avoid using
|
|
our names, since the implementation will respond to queries that match our
|
|
name.
|
|
|
|
|
|
TODO
|
|
-----
|
|
* better, more stable & complete API
|
|
* name collision detection
|
|
|
|
|
|
FILES
|
|
------
|
|
* mdns.c - provides data structures, parsing & encoding of MDNS packets
|
|
* mdnsd.c - implements the server socket, communication and thread
|
|
* testmdnsd.c - an example that creates an instance until terminated
|
|
|
|
|
|
LICENSE
|
|
--------
|
|
tinysvcmdns is licensed under the 3-clause ("modified") BSD License.
|
|
|
|
Copyright (C) 2011 Darell Tan
|
|
|
|
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.
|
|
|