netcat with SCTP support

Randall Stewart rrs at
Wed Apr 11 13:46:31 UTC 2007


Ok, I found it.. it was a simple case of not
waking things up if an orderly shutdown happened.. opps.

A comm lost (where you had an abort or some non-orderly
shutdown) would have worked :-D

I will add this to my next patch.. which i am due to
submit.. I will send and let George have a look.. so
I should get it in before the end of the week.

If you want a private patch let me know and I will send it .


Martin Kulas wrote:
> On Tue, Apr 10, 2007 at 06:39:01AM -0400, Randall Stewart wrote:
>> Thanks for checking out SCTP for netcat... let me
>> see if I can re-create this bug with current and figure
>> out what is broken... This sounds like a bug with the
>> TCP model..
> I rewrote netcat's readwrite() to use select() instead of the poll()
> systemcall but read() on the network file descriptor still does not 
> return EOF.  So netcat is not notified that the SCTP association has 
> been closed.
>> So to recreate this.. I set things up run it
>> and ctl-c the client?
> Yeah.
> Starting SCTP server:
> $ nc -c -l 55555
> Starting SCTP client:
> $ nc -c 55555
> Now send a SIGINT (ctl-c) to client or server.  Sending SIGINT using 
> TCP sockets will terminate the connection immediately and notifing
> the other side.
> Cheers,
> Martin

Randall Stewart
NSSTG - Cisco Systems Inc.
803-345-0369 <or> 803-317-4952 (cell)

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