Frozen connections
Eugene Grosbein
eugen at kuzbass.ru
Tue Mar 2 22:13:20 PST 2004
Don Lewis wrote:
> > ---------------------------------------------------------------------------
> > Packet 90
> > TIME: 12:06:51.278337 (0.279509)
> > LINK: 00:90:27:AB:08:88 -> 00:90:27:35:05:1B type=IP
> > IP: www -> kost hlen=20 TOS=00 dgramlen=41 id=64CE
> > MF/DF=0/1 frag=0 TTL=64 proto=TCP cksum=A7ED
> > TCP: port http -> 2134 seq=1179931920 ack=1524903532
> > hlen=20 (data=1) UAPRSF=010000 wnd=58400 cksum=FC43 urg=0
> > DATA: t
> > ---------------------------------------------------------------------------
> > Packet 91
> > TIME: 12:06:51.278615 (0.000278)
> > LINK: 00:90:27:35:05:1B -> 00:90:27:AB:08:88 type=IP
> > IP: kost -> www hlen=20 TOS=00 dgramlen=40 id=10E6
> > MF/DF=0/1 frag=0 TTL=128 proto=TCP cksum=BBD6
> > TCP: port 2134 -> http seq=1524903532 ack=1179931920
> > hlen=20 (data=0) UAPRSF=010000 wnd=0 cksum=5466 urg=0
> > DATA: <No data>
> >
> > As you see, last pair of packets repeats many times
> > and transfer is stalled here. What's wrong and who is guilty?
>
> It looks like the client is the guilty party. The server is sending
> 1-byte long window probes, and the client is responding with an ACK
> packet that is advertising a receive window of 0.
>
> I'd be suspicious of the application software on the client. Can you
> try a different web browser, or even fetch the same URL using something
> like telnet?
I've tried using Netscape Communicator 4.8 and MSIE 6.0
The picture is the same.
Eugene Grosbein
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