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Re: Error Resolution (TunnelStateData::Connection:: error )

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On 2/06/2015 9:15 p.m., Irimajiri keisuke wrote:
> Dear all,
> 
> I have to build a proxy server by using the squid.
> The number of clients is 400 people.
> 
> I do not know the cause of the error message that appears in the cache.log.
> In the weekday, I have come up with an error every few hours 8:00 to 18:00.
> Access concentration I look like does not matter.
> 
> [cache.log error message]
> 2015/05/11 13:37:24| TunnelStateData::Connection:: error : FD 610:
> read/write failure: (110) Connection timed out
> 
> Why I want to know whether this error has occurred.

Yes it has occured. You would not be seeing it otherwise.

> Also, I want to know the impact on the user.

The user who is causing the problem is probably not impacted at all.
Every other user sharing the proxy is impacted by the reduction in
available network socket, memory and CPU resources.


> 
> [squidclient mgr:filedescriptor]
> Every five minutes record
> extract FD610
> 
> It looks like an error has occurred in the use to which the terminal
> of xxx.xxx.2.115 user.
> Is it a problem of communication of the user and the proxy?
> 

Nothing happened on a TCP conection for a long time. It was closed by
the networking sub-systems somewhere between Squid and the client.


> Active file descriptors:
> File Type   Tout Nread  * Nwrite * Remote Address        Description
> ---- ------ ---- -------- -------- ---------------------
> ------------------------------
>  610 Socket  893    39494*   50228  xxx.xxx.xxx.162:443
> outlook.office365.com:443       2015/05/11_13:08:29
>  610 Socket 86329   45754*  103329  xxx.xxx.6.141:50174   Reading next
> request         2015/05/11_13:13:29
>  610 Socket 86258    6516*   13975  xxx.xxx.2.115:50820   Reading next
> request         2015/05/11_13:18:29
>  610 Socket 85958   12472*   34531* xxx.xxx.2.115:50820   Reading next
> request         2015/05/11_13:23:29
>  610 Socket 85657   12472*   34531* xxx.xxx.2.115:50820   Reading next
> request         2015/05/11_13:28:29
>  610 Socket 85357   12472*   34531* xxx.xxx.2.115:50820   Reading next
> request         2015/05/11_13:33:29
>  610 Socket 86336    3652*    8003  xxx.xxx.3.152:50817   Reading next
> request         2015/05/11_13:38:29
> 
> [access.log]
> I do not see suspicious error log I tried to extract the address xxx.xxx.2.115.
> 
> Please tell me a good idea toward someone solve.

Please provided additional details:
 * Squid version
 * Squid configuration


I suspect you have a quite old verion of Squid. That particular error
message does not even exist in the code any more. The current releases
display much more TCP details about the connection where the error occured.

Amos
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