[asterisk-bugs] [JIRA] (ASTERISK-27130) Applications ARI: Unsubscribe action for deviceStates does not remove old subscriptions properly

[Sergej Kasumovic (JIRA)]

Sergej Kasumovic created ASTERISK-27130:
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             Summary: Applications ARI: Unsubscribe action for deviceStates does not remove old subscriptions properly
                 Key: ASTERISK-27130
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27130
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
    Affects Versions: 14.6.0
            Reporter: Sergej Kasumovic
         Attachments: device_state_unsubscribe.diff

This was found by a team member while using ARI with Asterisk 14, but it probably affects all versions - 13/14/master. 

Description is as following:
* Once you subscribe to deviceState with Applications REST API, it will be added into deviceStateSubscription list and into subscription pool. 
* When you unsubscribe it will remove from the deviceStateSubscription list but not from the subscription pool. 
* When you subscribe again, it will add it to pool again. 
* Now you will have two subscriptions and you will receive same event twice. 

This fix should now remove deviceState subscription from pool and it should fix unsubscribe on deviceState.

Attaching patch for quick preview, before pushing to Gerrit. 



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