On Fri, 2007-03-09 at 14:03 +0200, Vlad wrote: > Ok, this is conversation between remote end and router:
> 04:29:45.297380 IP remote > router: . ack 80660 win 137 <nop,nop,timestamp > 73615212 4388653> > [... here we hangs ..... ] > 04:30:45.297688 IP remote > router: F 1:1(0) ack 80660 win 137 > <nop,nop,timestamp 73675222 4388653> <=== reset connection after 60 sec > timeout > > I didn't see here nothing strange. Other than it's advertising a tiny window (137 octets) and then never sending a window update to increase it. I notice though that the SYN has the tcp window scaling option in it - I'm not sure if tcpdump is reporting the subsequent packets' window sizes before or after applying this multiplier. If this were the case then it would be advertising >32KB of space, so no problem there. In that case it would definitely point the finger at whatever this thing is in the middle: it doesn't send a window update and so the connection stops. One thing that lwIP might be able to do in a situation like this is to send zero-window probes. This isn't something we currently support though. Kieran _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
