[aprssig] alternatives to TCP

[Jim Lux]

There's been some mails in the digest recently under a subject line of 
passcode alternaties, etc.
Leaving aside the security/authentication/non-ham traffic issues..


Why not use Disruption/Delay Tolerant Networking using Bundle Protocol 
or LTP?  They are specifically designed for long latency radio links 
without real time acknowledgement (although it can accommodate it).

You put BP protocol data units into whatever link layer you want (AX.25, 
CCSDS AOS, IP UDP, etc.)


There's an off the shelf implementation called ION

http://sourceforge.net/projects/ion-dtn/


Seems it could interoperate just fine with existing APRS traffic, but 
give you way to do delivery of larger objects  or files.