[squid-users] Error Resolution (TunnelStateData::Connection:: error )

[Irimajiri keisuke]

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

[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?

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.
I look forward to hearing from you soon.

ken