[OZAPRS] Aprs Server Question
Geoff - VK2XJG
vk2xjg at iinet.net.au
Sat Nov 20 11:49:02 EST 2004
G'day Norm, The weekend couldn't come around fast enough this week :-)
The extra frame is a keepalive. Its part of the server's protection
against
hung ports, where a client connects but sends no data. What used to
happen
was clients connected and then crashed, leaving the port hung on the
server.
If the keepalive goes un-acknowledged, then port is torn down.
20 seconds is the default, however we can experiment with increasing the
time, I'll try 5 minutes and see if that causes any issues :-)
Regards,
Geoff
--
Open WebMail Project (http://openwebmail.org)
---------- Original Message -----------
From: Norm McMillan <njmcmillan at bigpond.com>
To: OZAPRS <ozaprs at marconi.ics.mq.edu.au>
Sent: Sat, 20 Nov 2004 10:53:12 +1100
Subject: [OZAPRS] Aprs Server Question
> G'day,
> It's the weekend!!!!!!! :)
>
> A brief question for the server types.
>
> I'm connecting to first.aprs.net.au:14580 with the extra logon
> filter m/300. this should show stations within 300km of my qth, no?
> OK it appears to work. I get another frame from the server every
20sec...
>
> <javaAPRSSrvr 3.9b05 [date/time string] APRSAUS 203.220.0.74:14580>
>
> Whats the purpose of this frame? Every 20sec 24/7 eats a little
> download allocation, any idea how much? It's something I didn't
> allow for!
>
> TIA
> --
> Norm, VK2XCI,
> Voice of The Edge of The Outback.
> QF27wd
> _______________________________________________
> ozaprs mailing list
> ozaprs at marconi.ics.mq.edu.au
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------- End of Original Message -------
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