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List:       squid-users
Subject:    Re: [squid-users] To many ERR_CANNOT_FORWARD
From:       Amos Jeffries <squid3 () treenet ! co ! nz>
Date:       2023-08-24 3:41:20
Message-ID: 625c38ee-1d43-49c1-ba62-e3aec6c9f951 () treenet ! co ! nz
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On 24/08/23 00:42, Andre Bolinhas wrote:
> Hi
>
> I'm using squid 5.2 but stating yesterday I'm getting too many errors
> ERR_CANNOT_FORWARD for random websites.
>

FYI, current Squid is 6.2 with 6.3 due out next week. Squid-5.x are
officially end-of-life now.


> What's could be the issue?
>
> This is an extract of debug log
>


> 2023/08/22 15:50:28.564 kid1| 5,4| AsyncCallQueue.cc(61) fireNext:
> leaving TunnelBlindCopyReadHandler(conn6384669 local.100.16.37:18006
> remote .90.216.0:443 HIER_DIRECT flags=1, data=0x56227564b5a8, size=0,
> buf=0x562275f76900)

One endpoint (20.90.216.0) of a CONNECT tunnel delivered the "end of
connection" signal to Squid.

It looks like the server disconnected. Likely without having sent any
actual protocol level response.


> 2023/08/22 15:50:28.564 kid1| 5,4| AsyncCallQueue.cc(59) fireNext:
> entering tunnelServerClosed(FD -1, data=0x56227564b5a8)
> 2023/08/22 15:50:28.564 kid1| 5,4| AsyncCall.cc(42) make: make call
> tunnelServerClosed [call56950820]
> 2023/08/22 15:50:28.564 kid1| 26,3| tunnel.cc(752) noteClosure:
> conn6384669 local.100.16.37:18006 remote .90.216.0:443 HIER_DIRECT
> flags=1
> 2023/08/22 15:50:28.564 kid1| 46,5| access_log.cc(308) stopPeerClock:
> First connection started: 1692715828.514861, current total response time
> value: -1000
> 2023/08/22 15:50:28.564 kid1| 26,4| tunnel.cc(1338) saveError: [none] ?
> ERR_CANNOT_FORWARD


That negative response time looks a bit weird. Maybe just a display bug,
or your machines NTP clock doing some "time travel" that makes Squid
think an error happened.


Amos
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