[aprssig] X-APRS: a new protocol in APRSdroid
jgorkos at gmail.com
Sun Apr 2 01:25:43 EDT 2017
Well played Georg. Bravo. Happy April 1st to you, too!
On 4/1/17 1:32 AM, Georg Lukas wrote:
> Hi all,
> in the past I've often realized that APRS-IS does not work well with
> mobile TCP/IP - latency on 2G or 3G causes delays that skew the position
> reports; interruptions in the data connection are almost impossible to
> detect at application level, and thus cause packet drops, etc.
> On the other hand, with my other project (yaxim, a mobile client for the
> Extensible Messaging and Presence Protocol / XMPP), all of these
> problems have been solved years ago. Now I have come to the conclusion
> that APRS and XMPP have many things in common:
> - They are both network protocols to send real-time GPS and message
> - They are mainly parsed by computers and displayed in a processed form.
> - Both have a vast network of distributed servers to distribute data.
> - For both, there are sophisticated web interfaces available.
> - etc.
> Therefore, I decided to bring together the best of both worlds and
> created X-APRS: a revival of APRS based on the XMPP protocol.
> You can find the protocol specification with color-coded examples here:
> Starting with the upcoming version 1.4, APRSdroid will only support
> X-APRS over TCP/IP and HamNet, and legacy ARPS will be slowly phased
> However, this should not be a problem, as the new protocol will also be
> supported by aprs2net and aprs.fi (expect separate announcements soon).
> Client and server developers are encouraged to jump in and implement the
> protocol, using one of the many available XMPP libraries.
> You can have a peek at the data stream by issuing one of the following
> telnet xaprs.aprsdroid.org 20482
> telnet 18.104.22.168 20482
> 73 from Germany,
> Georg DO1GL
> aprssig mailing list
> aprssig at tapr.org
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