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<blockquote type="cite"
cite="mid:E8922D20-457D-470A-AE98-443AA834217D@gmail.com">
<pre class="moz-quote-pre" wrap="">When I talk about metadata I mean metadata stored into the backend databases, that should be supplided by the iGates. Maybe it would be time to define a new mechanism now that at least LoRa-APRS is reasonably young and there are still few developers. </pre>
</blockquote>
<p>What are the "backend databases" to which you refer?</p>
<p>APRS-IS is essentially just a giant stream of de-duped
TNC2-format lines. No storage, just one continuous "live" stream.<br>
</p>
<p>There's a hierarchy of servers, which all send all the packets to
each other, up and down the tree, and around in loops, except
thanks to the de-duping, loops never actually cause loops in the
actual data itself.</p>
<p>Now possibly SOME people take that stream and put it into
databases (aprs.fi, aprsdirect.de spring to mind, probably dozens
of others), but you're not feeding all of them, you're feeding
APRS-IS which in turn is feeding all of those (and many thousands
of other clients, all somewhat alike, and all expecting TNC2
data). APRS-IS itself has no "backend databases" as such.</p>
<p>You would presumably need to find some way to add your metadata
to TNC2-format lines... whilst also not breaking that
de-duplication BTW, and also not breaking any other servers or
clients that are expecting a stream of TNC2-format lines.<br>
</p>
Nick VA3NNW<br>
<pre class="moz-signature" cols="72">--
"Nosey" Nick Waterman, VA3NNW/G7RZQ, K2 #5209, IRLP #2410 on VE3RBM
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