Thanks to help from Timothe Litt, I have Phase II support, including just
enough "intercept" support to be useable, working in my Python router
(svn://akdesign.dyndns.org/pydecnet/trunk/pydecnet). Tested it with a KS-10
TOPS-20 setup. I had it do NFT from a DECnet/E system two hops away. Worked
correctly including the handling of the text (ASCII) data.
It doesn't do all that is required for intercept nodes -- tracking NSP
connections so it can disconnect them if the path goes away. Also, Phase II
NSP does not do packet timeout and retransmit, so if a packet is lost on the
path to the destination, the connection is wedged. I may end up doing a bit
more than standard intercept operation and do timeout/retransmit on behalf of
the end system. That's cheating, of course, but why not?
Anyway, this may help those who have Phase II systems. Comments and feedback
and bug reports appreciated.
paul
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