[asterisk-dev] [Code Review] 2774: res_pjsip: Allow for subscription handlers to specify if they handle the default Accept type for an event package

[Mark Michelson]

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Review request for Asterisk Developers and Joshua Colp.


Bugs: ASTERISK-22067
    https://issues.asterisk.org/jira/browse/ASTERISK-22067


Repository: Asterisk


Description
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res_pjsip_pubsub was being too strict when handling incoming SUBSCRIBE requests. If there was no Accept header present, then the request would be rejected with a 489 Bad Event.

Every event package has a default type to use if no Accept header is present in a SUBSCRIBE. So a request should potentially be allowed if one of the subscription handlers registered for a particular event package provides the default type. As such, the ast_sip_subscription_handler has been modified to indicate if it handles the default type for a particular event package.


Diffs
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  /trunk/include/asterisk/res_pjsip_pubsub.h 397192 
  /trunk/res/res_pjsip_exten_state.c 397192 
  /trunk/res/res_pjsip_mwi.c 397192 
  /trunk/res/res_pjsip_pubsub.c 397192 

Diff: https://reviewboard.asterisk.org/r/2774/diff/


Testing
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I ran a SIPp scenario that subscribed to MWI for a particular mailbox but did not provide any Accept headers. With the change in place, the SUBSCRIBE was allowed and MWI was indicated as expected.


Thanks,

Mark Michelson

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