[squid-users] Zero sized reply downloading a CSV file

Hi list,
I'm experiencing a 'Zero sized reply error' downloading a CSV file from a
web page.
In front of squid-2.4.STABLE1-5 on a Redhat Linux 2.4.7-10 box, I have
Checkpoint FW-1 NG FP1 with antivirus checking via CVP enabled.
Problem seems to be started after upgrade to FW-1 NG from 4.1.

This is the row in access.log:
1020335934.709 38939 193.xxx.yyy.25 TCP_MISS/503 894 GET
http://www.uic.it/java/QueryOneDateAllCur? - DIRECT/193.203.230.244 -

And this is tcpdump output of the session:

# tcpdump host 193.xxx.yyy.25
tcpdump: listening on eth0
12:43:53.308168 193.xxx.yyy.25.1331 > 193.xxx.zzz.163.squid: S
976379581:976379581(0) win 16384 <mss 1460,nop,nop,sackOK> (DF)
12:43:53.308168 193.xxx.zzz.163.squid > 193.xxx.yyy.25.1331: S
728538071:728538071(0) ack 976379582 win 5840 <mss 1460,nop,nop,sackOK> (DF)
12:43:53.308168 193.xxx.yyy.25.1331 > 193.xxx.zzz.163.squid: . ack 1 win
17520 (DF)
12:43:53.308168 193.xxx.yyy.25.1331 > 193.xxx.zzz.163.squid: P 1:382(381)
ack 1 win 17520 (DF)
12:43:53.308168 193.xxx.zzz.163.squid > 193.xxx.yyy.25.1331: . ack 382 win
6432 (DF)
12:44:33.338168 193.xxx.zzz.163.squid > 193.xxx.yyy.25.1331: P 1:900(899)
ack 382 win 6432 (DF)
12:44:33.338168 193.xxx.zzz.163.squid > 193.xxx.yyy.25.1331: F 900:900(0)
ack 382 win 6432 (DF)
12:44:33.338168 193.xxx.yyy.25.1331 > 193.xxx.zzz.163.squid: . ack 901 win
16621 (DF)
12:44:33.338168 193.xxx.yyy.25.1331 > 193.xxx.zzz.163.squid: R
976379963:976379963(0) win 0 (DF)

Any suggestion?
I read in the FAQ that "Squid developers would be happy to help you uncover
the problem"!

Thanks in advance
Mimmo Viggiani
Received on Thu May 02 2002 - 04:38:41 MDT