[asterisk-bugs] [JIRA] (ASTERISK-18042) [patch] information from unsolicited MWI is lost during asterisk restart; cache to ast_db to avoid this

[Joshua Colp (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-18042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joshua Colp updated ASTERISK-18042:
-----------------------------------

    Summary: [patch] information from unsolicited MWI is lost during asterisk restart; cache to ast_db to avoid this  (was: information from unsolicited MWI is lost during asterisk restart; cache to ast_db to avoid this)

> [patch] information from unsolicited MWI is lost during asterisk restart; cache to ast_db to avoid this
> -------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-18042
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-18042
>             Project: Asterisk
>          Issue Type: Improvement
>      Security Level: None
>          Components: Channels/chan_sip/Interoperability
>    Affects Versions: SVN, 1.8.3, 1.8.4, 13.18.4
>         Environment: Asterisk 1.8.x / trunk inter-operating with Exchange 2010 UM for Voicemail
>            Reporter: Kai Hoerner
>              Labels: Exchange, mwi, voicemail
>         Attachments: asterisk-trunk-r324236-sip-unsolicited_MWI-cached_v1.patch
>
>
> Asterisk can receive unsolicited MWI and store that in a virtual mailbox.
> * With the patch from ASTERISK-17362 asterisk is also able to parse that unsolicited MWI notify and break it down to multiple virtual mailboxes. this is half the work to get Exchange Voicemail working.
> Without this patch, all MWI are stored in the same single "virtual" mailbox.
> * In the patch (v2) from ASTERISK-17997 a bugfix / regression is included, that makes the information from the cached unsolicited MWI available on initial subscribe.
> Without this patch, the answer to an initial SUBSCRIBE for a unsolicited mailbox always results in a 0/0 mwi NOTIFY to the subscriber. Only when a new unsolicited MWI NOTIFY was received, that one was passed correctly to the end user device.
> The attached patch here combines both patches above (credits to [~rsw686] and [~cgoudie]) and enhances the unsolicited MWI feature by caching the several virtual mailboxes in the ast_db storage. It will make the MWI content of external (unsolicited, e.g. Exchange 2010 UM) mailboxes available after restart. 
> When asterisk receives a SUBSCRIBE for MWI from a sip friend, and there is neither a cached MWI nor a local mailbox with the requested name, it tries to look it up in the SIP/unsolicited_MWI_cache namespace and loads the values from the ast_db into the event cache.
> I have tested this patch with Exchange 2010 UM, asterisk-1.8.3-rc2 and ported it to the current SVN trunk.
> In all scenarios i now have the correct information from exchange on my phones: 
> - when the MWI is updated from the exchange by receiving a unsolicited MWI NOTIFY  (core feature, enhanced by ASTERISK-17362)
> - when restarting asterisk  (ast_db caching enhancement)
> - when restarting the phone  (initial subscribe fix)
> When needed, i can also port this patch to 1.8.4.2
> My sip.conf looks basically like this: 
> [exchange]
> type=friend
> transport=tcp
> port=5065
> host=exchange.domain.local
> unsolicited_mailbox=@exchangeVM
> [sipuser]
> mailbox=200 at exchangeVM   ; (200 is the UM address/tel-uri of the mailbox user)



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