[asterisk-bugs] [JIRA] (ASTERISK-24052) Imap voicemail support. Voicemail reload issue

[Rusty Newton (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-24052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=220815#comment-220815 ] 

Rusty Newton commented on ASTERISK-24052:
-----------------------------------------

I am able to reproduce the issue in the latest SVN of branch 1.8.  SVN-branch-1.8-r418641

The issue is as you describe. Each run of "voicemail reload" or "module reload app_voicemail.so" results in an established connection on a new port, without closing the old. The issue is compounded by the number of IMAP voicemail users.

{quote}
I did some more investigation, here more details about the issue. I need to know who is the right group to adress this issue (free pbx or asterisk)
{quote}

The issue appears to be with the IMAP feature in app_voicemail. I think you can close out your FreePBX issue.

> Imap voicemail support. Voicemail reload issue
> ----------------------------------------------
>
>                 Key: ASTERISK-24052
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24052
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Applications/app_voicemail/IMAP
>    Affects Versions: SVN, 1.8.22.0
>         Environment: Free pbx distro
>            Reporter: Louis Jocelyn Paquet
>            Assignee: Rusty Newton
>            Severity: Minor
>         Attachments: Issue24052
>
>
> When we do a voicemail reload, the application is recreating new IMAP connection whithout closing the active one. This is resulting with extra open connection. After about 30 minutes, the old connections moving in states close_wait and stay like this until we restart asterisk.
> For my production server with 65 users using IMAP storage vor voicemail, this is resulting with 65 extra IMAP connections every time we do an apply. So after 1 week, we got all IMAP TCP socket use and we need to restart Asterisk because the server cannot establish new IMAP connections.
> I did some more investigation, here more details about the issue. I need to know who is the right group to adress this issue (free pbx or asterisk)
> So, I reproduce the issue on a small server were I have only 1 custommer with IMAP connection. I have the same issue on my server were I have 66 custommer with imap voicemail.
> So to reproduce the issue, you just have to connect one ATA (sip client) on a extension with an IMAP account on an other server (Imap storage)
> So in the server, if I do tne netstat, I can see a conncetions.
> {noformat}
> [root at voip5b ~]# netstat -ap |grep imap
> tcp 0 0 192.168.101.21:48237 publicIPhidden:imap ESTABLISHED 18675/asterisk
> tcp 0 0 192.168.101.21:48236 publicIPhidden:imap ESTABLISHED 18675/asterisk
> {noformat}
> If I do an voicemail reload, you will see that the application is recreating new connections whithout closing the prevoius one. after 25-30 minutes, the old connections come in close_wait status and never get completely close. After a week, all port become use and the server cannot establish imap connections.
> {noformat}
> [root at voip5b ~]# asterisk -r
> Asterisk 1.8.22.0, Copyright (C) 1999 - 2012 Digium, Inc. and others.
> Created by Mark Spencer <markster at digium.com>
> Asterisk comes with ABSOLUTELY NO WARRANTY; type 'core show warranty' for details.
> This is free software, with components licensed under the GNU General Public
> License version 2 and other licenses; you are welcome to redistribute it under
> certain conditions. Type 'core show license' for details.
> =========================================================================
> Connected to Asterisk 1.8.22.0 currently running on voip5b (pid = 18675)
> Verbosity is at least 3
> voip5b*CLI> voicemail reload
> Reloading voicemail configuration...
> == Parsing '/etc/asterisk/voicemail.conf': == Found
> == Parsing '/etc/asterisk/vm_general.inc': == Found
> == Parsing '/etc/asterisk/vm_email.inc': == Found
> voip5b*CLI> exit
> {noformat}
> {noformat}
> [root at voip5b ~]# netstat -ap |grep imap 
> tcp 0 0 192.168.101.21:48239 publicIPhidden:imap ESTABLISHED 18675/asterisk
> tcp 0 0 192.168.101.21:48237 publicIPhidden:imap ESTABLISHED 18675/asterisk
> tcp 0 0 192.168.101.21:48240 publicIPhidden:imap ESTABLISHED 18675/asterisk
> tcp 0 0 192.168.101.21:48236 publicIPhidden:imap ESTABLISHED 18675/asterisk
> {noformat}
> This is what happening on my production server (66 custommers). 66 IMAP new connections every time we do an apply in free pbx.



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