[root@bravo logs]# cat /proc/sys/net/ipv4/tcp_fin_timeout
10
[root@bravo logs]#




>---- Original Message ----
>From: "U.Mutlu via xmail" <xmail@xmailserver.org>
>To: "U.Mutlu" <um4...@mutluit.com>, "XMail Users Mailing List" 
><xmail@xmailserver.org>
>Sent: Tue, May 26, 2015, 1:28 PM
>Subject: Re: [xmail] BUG : XMAIL 1.27 with SSL
>
>U.Mutlu via xmail wrote on 05/26/2015 07:06 AM:
>> Oversea Site via xmail wrote on 05/26/2015 05:14 AM:
>>> No Log Error. No Fatal Error log. No Core Dump
>>>
>>> It's not RAM or HW problem. It's XMAIL internal issue, because when I switch
>>> to stunnel, all problems solved. And then when I test K9-MAIL with
>>> XMAIL+STUNNEL, K9 Client will not have any JAVA somethings Exception Error
>>>
>>> Two tests
>>>
>>> 1. Very Important Thing in Xmail 1.27 Native SSL
>>>
>>> If the emailbox has many emails such as 10000, Microsoft Outlook with SSL or
>>> NON-SSL download them, it WILL NOT have this issue.
>>> Some Tencent Foxmail for Windows, after finish ssl session, it will take the
>>> server be FIN_WAIT2 (some version, not all)
>>> But K9-MAIL for Android, Download first 1000, it will appear the error in
>>> K9-MAIL randomly.
>>>
>>>
>>> 2. Xmail 1.27 + Stunnel Proxy
>>>
>>> If the emailbox has many emails such as 10000, Microsoft Outlook with SSL or
>>> NON-SSL download them, it WILL NOT have this issue.
>>> Some Tencent Foxmail for Windows, after finish ssl session, it WILL NOT have
>>> any problem. Server WILL NOT TAKE FIN_WAIT_2
>>> K9-MAIL for Android, Download first 1000, it will NOT DISPLAY any error when
>>> it finished download emails.
>>
>> I would need full description about the server HW and SW (OS version,
>> xmail start params etc., any xmail patches applied etc.).
>>
>> There is of course also the possibility that the bug lies in the
>> said mobile client program, especially if it goes online via
>> unstable mobile links as it seems to be a link latency problem,
>> or the client does not close the socket cleanly. Take a look at these:
>> https://github.com/Automattic/socket.io/issues/1380
>> http://stackoverflow.com/questions/5328155/preventing-fin-wait2-when-closing-socket
>
>Check this too:
>
># cat /proc/sys/net/ipv4/tcp_fin_timeout
>60
>
>The following page is informative too:
>http://httpd.apache.org/docs/2.0/misc/fin_wait_2.html
>
>-- 
>cu
>Uenal
>
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