Hi Henrik,
Thank you for the advise. So I have got read_timeout and request_timeout
mixed up. If I want to ensure that the connection from client PC --> Squid
Proxy Server --> Web Server is always there or dropped after certain time,
pls advise what are the timeout/setting that I should set??? Thank you.
From: Henrik Nordstrom <henrik@xxxxxxxxxxxxxxxxxxx>
To: squid squid <squidusr@xxxxxxxxxxx>
CC: squid-users@xxxxxxxxxxxxxxx
Subject: Re: Timeout explanation in layman's term
Date: Fri, 27 Apr 2007 00:03:16 +0200
tor 2007-04-26 klockan 20:56 +0800 skrev squid squid:
> connect_timeout 120 seconds - This is a timeout between Squid Proxy
Server
> --> Web Server and if after 120 seconds, Squid Proxy Server does not get
a
> reply from Web Server, it will response to the Client PC of connection
timed
> out error to the Web Server.
Not reply. Just to connect to the server in order to send the request.
(TCP connect).
> read_timeout 120 seconds - This is a timeout between Client PC --> Squid
> Proxy Server and if after 120 seconds, the client PC is idle (ie. IE did
not
> send any request), Squid Proxy Server will drop the connection between
the
> Client PC and Squid Proxy Server.
read_timeout is on the server connection. If the server is idle not
returning a piece of response within this time Squid gives up. Default
15 minutes.
It's also used as timeout while trying to send the request to the server
btw..
> request_timeout 30 seconds - This is a timeout between Squid Proxy
Server
> --> Web Server. Squid Proxy Server able to communicate with the Web
Server
> upon receiving a request from the Client PC. However the Web Server is
not
> able to complete the request after 30 seconds, Squid Proxy Server will
> response to the Client PC of connection timed out error to the Web
Server.
request_timeout is between client->squid. Here is two different timeouts
(request_timeout and persistent_request_timeout). The first is the
timeout before which the client must send the first request after
establishing a TCP connection to the proxy, the second is the timeout
before which the client must send the next request after the response to
the previous..
> pconn_timeout 120 seconds - This is a timeout between Squid Proxy Server
-->
> Web Server and if after 120 seconds, Squid Proxy Server will drop the
> connection between the Squid Proxy Server and Web Server.
Correct. Server connections not used for more than pconn_timeout is
dropped to avoid wasting server resources no longer needed.
Regards
Henrik
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