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Re: [lwip-users] Retransmission problems on server sockets


From: Luca Ottaviano
Subject: Re: [lwip-users] Retransmission problems on server sockets
Date: Wed, 20 Apr 2011 12:26:44 +0200

On mar, 2011-04-19 at 09:45 +0100, Kieran Mansley wrote:
> On Tue, 2011-04-19 at 09:14 +0200, Luca Ottaviano wrote:
> > See attached tcpdump for an example session.
> 
> I'm assuming .115 is the lwIP device and .200 is the PC.
> 
> It looks like the PC is no longer receiving the packets sent by the lwIP
> device.  I would guess that the way you're inserting/removing the
> firewall has resulted in something getting broken at the PC end.  The
> packets lwIP are sending look fine, and as they appear in the packet
> capture they're clearly getting across the network, but they don't seem
> to be getting as far as the network stack on your PC as it is ignoring
> them.

Actually, the bug was that the device wasn't retransmitting the packets.
However, it was a problem on my implementation of sys_arch_timeouts().

Thanks.
-- 
Luca Ottaviano - address@hidden
Develer S.r.l. - http://www.develer.com/
.hardware .software .innovation
Tel.: +39 055 3986627 - ext.: 218




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