df
/
zeroconf
1
0
Fork 0
Code Issues 7 Pull Requests 1 Releases Wiki Activity

Document current version 

Add description of HummyNew version and de-emphasise DT's health warning, now mostly obsolete.
This commit is contained in:
df 2020-07-27 01:03:59 +00:00
parent 0aa116dbce
commit 964c2dd28d
1 changed files with 14 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
README.markdown
View File

@ -1,5 +1,5 @@
NOTICE
=======
NOTICE FROM THE ORIGINAL AUTHOR
-------------------------------
This project is un-maintained, and has been since 2013.
@ -27,26 +27,25 @@ 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
Unicast queries are accepted but only legacy queries (non-mDNS source port) get a unicast response (think `dig`).
FILES
------
* mdns.c - provides data structures, parsing & encoding of MDNS packets
* mdns.h - interface to the above
* mdnsd.c - implements the server socket, communication and thread
* mdnsd.h - interface to the above
* testmdnsd.c - an example that creates an instance until terminated
HISTORY
-------
Darell Tan is the original author. His version, to which the Notice above refers, can be found at https://bitbucket.org/geekman/tinysvcmdns, and in a branch of this repository. Several forked versions can be found across the Internet. The version at https://github.com/philippe44/TinySVCmDNS is adapted for more platforms and addresses some of the issues in the original version. Meanwhile, the code was adopted as part of Samsung's TizenRT [IOT](https://www.briansolis.com/tag/internet-of-shit/) framework, but without maintaining the change history between that version and the original. The TizenRT version implemented most of the RFC 6762/6763 features missing from the original version, and also fixed the known vulnerabilities mentioned in the Notice.
In 2012 the original version was [adapted as a package](https://hummy.tv/forum/threads/announcing-dns-name-on-upnp-for-webif.1640/) for the [Custom Firmware](https://hummy.tv/forum/forums/hd-hdr-fox-t2-customised-firmware.28/) on the Humax HD/R-Fox T2 TV set-top boxes. This fork (let's call it HummyPkg) differed mostly in the `testmdnsd.c` program which was specialised for the package. However it did not track the changes in the original version. The branch named HummyPkg does so.
The HummyPkg version enabled other LAN devices to find the tinysvcmdns host, but only if they were able to resolve names by querying the mDNS service; this excluded other Humax CF boxes as they rely on a `hosts` file for name resolution. It also had to be restarted if the LAN IP address of the tinysvcmdns host changed, as would happen at startup using a WiFi dongle.
By reabsorbing the changes from the TizenRT version into the HummyPkg version and making some further enhancements, it has been possible to create a version named HummyNew that addresses those issues. This comprises a highly modified `testmdnsd.c` that can parse and write `hosts` files together with an almost fully featured mDNS implementation.
LICENSE
--------