[asterisk-bugs] [JIRA] (ASTERISK-23705) PJSIP: Add outbound subscriptions and inbound NOTIFY request handling (MWI, Device State)

[Matt Jordan (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-23705?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Jordan updated ASTERISK-23705:
-----------------------------------

    Status: Open  (was: Triage)

> PJSIP: Add outbound subscriptions and inbound NOTIFY request handling (MWI, Device State)
> -----------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-23705
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23705
>             Project: Asterisk
>          Issue Type: Improvement
>      Security Level: None
>          Components: Resources/res_pjsip, Resources/res_pjsip_pubsub
>            Reporter: Matt Jordan
>
> One of the things that didn't make the cut in PJSIP land initially was the concept of outbound subscriptions. We need to add it.
> This task consists of two parts:
> # Adding outbound subscriptions, and managing all the fun that it entails
> # Understanding inbound NOTIFY requests and raising the appropriate Stasis messages
> Outbound subscriptions will need a new configuration item. This should be discussed on the -dev list before being implemented, but it _could_ look like this:
> {noformat}
> [external_asterisk]
> type=endpoint
> outbound_subscription=external_asterisk
> [external_asterisk]
> type=outbound_subscription
> mailbox=1000 at context
> {noformat}
> This uses a similar nomenclature to outbound registration. We would create a subscription for an event package mapping to 'mailbox' for {{1000 at context}}.
> {{res_pjsip_pubsub}} already contains some APIs for this; these should be extended to support outbound subscriptions.
> NOTIFY request handling should be handled by the body generators. A body generator should have the ability to take in the body from a NOTIFY request and return back a stasis_message to publish. The virtual table for body generators should be modified to support such a callback, and the various resource modules updated to pass back the appropriate stasis messages.



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