[aprssig] "Out-of-order" data on APRS-IS

AE5PL Lists HamLists at ametx.com
Wed Aug 10 08:16:31 EDT 2005

No, to my knowledge no client buffers packets for when the Internet
connection is re-established.  If your client does, this is a major
design flaw and the author should be contacted directly to have this

APRS and APRS-IS are near-real time.  There is no buffering of packets
waiting for a connection to be established as this would cause problems
such as described.  In fact, javAPRSSrvr disables the Nagel algorithm
(TCP/IP buffering mechanism) to help insure a steady stream of packets
to the clients and other servers.


Pete Loveall AE5PL
mailto:pete at ae5pl.net 

> -----Original Message-----
> From: Danny Pease
> Posted At: Tuesday, August 09, 2005 6:17 PM
> Subject: RE: [aprssig] "Out-of-order" data on APRS-IS
> I know in my case, the APRS-IS server connection doesn't pass 
> all my Igate traffic 100% of the time.  I have seen several 
> times where the connection gets broken and re-established a 
> few minutes later.  I assume the traffic that would normally 
> have went directly to APRS-IS is buffered until the 
> connection is re-established, or dies of old age!
> Danny  NG9R

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