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Re: [lwip-users] lwIP 1.3.x and tcp socket disconnects in the ESTABLISHE
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From: |
Kieran Mansley |
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Subject: |
Re: [lwip-users] lwIP 1.3.x and tcp socket disconnects in the ESTABLISHED state |
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Date: |
Tue, 27 Jan 2009 12:18:32 +0000 |
On Fri, 2009-01-23 at 17:45 +0100, Simon Goldschmidt wrote:
> You should check your port and driver for correctness first. Of course
> it could also be a bug in lwIP, but things like "I cannot turn on all
> TCP debug as this will cause the stack not to work at all" are highly
> suspicious of threading problems!
Although there are some parts of the TCP protocol that rely on timing,
and if you're spending a lot of time printing out debug statements your
could fail to meet these constraints and the other end could quite
rightly give up.
It would be interesting to see a packet capture around the point that
the connection is prematurely closed. The move directly to CLOSED from
ESTABLISHED makes me think that there might be a TCP RST segment
involved.
Kieran