[squid-users] Squid4 ICAP connection handling

[Peter Viskup]

Running Squid 4.0.23 the ICAP connections getting "frozen".

proxy:~ $ netstat -ntpa| grep 40620
tcp   920144      0 127.0.0.1:40620         127.0.0.1:1344
ESTABLISHED 1165/(squid-1)
tcp        0 2744857 127.0.0.1:1344          127.0.0.1:40620
ESTABLISHED 1211/esets_icap

# after ICAP service restart
proxy:~ $ netstat -ntpa| grep 40620
tcp   920144      0 127.0.0.1:40620         127.0.0.1:1344
ESTABLISHED 1165/(squid-1)
tcp        0 2744858 127.0.0.1:1344          127.0.0.1:40620
FIN_WAIT1   -

# later on - squid still keep the connection open
proxy:~ $ netstat -ntpa| grep 40620
tcp   920144      0 127.0.0.1:40620         127.0.0.1:1344
ESTABLISHED 1165/(squid-1)

How the ICAP connections are handled?
Was there any change in the code? We didn't experienced this with
Squid3.5 before.

Peter