[asterisk-bugs] [JIRA] (ASTERISK-21882) Bridge API Enhancements - ensure that n-1 channels leaving a multi-party bridge ejects the last channel

[Digium Subversion (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-21882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Digium Subversion closed ASTERISK-21882.
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    Resolution: Fixed
    
> Bridge API Enhancements - ensure that n-1 channels leaving a multi-party bridge ejects the last channel
> -------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21882
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21882
>             Project: Asterisk
>          Issue Type: Bug
>          Components: Core/Bridging
>            Reporter: Matt Jordan
>              Labels: Asterisk12
>
> This issue is to address the BUGBUG comment in {{bridging_basic}}:
> {noformat}
> static int basic_hangup_hook(struct ast_bridge *bridge, struct ast_bridge_channel *bridge_channel, void *hook_pvt)
> {
> /* BUGBUG Race condition.  If all parties but one hangup at the same time, the bridge may not be dissolved on the remaining party. */
> 	ast_bridge_channel_lock_bridge(bridge_channel);
> 	if (2 < bridge_channel->bridge->num_channels) {
> 		/* Just allow this channel to leave the multi-party bridge. */
> 		ast_bridge_change_state(bridge_channel, AST_BRIDGE_CHANNEL_STATE_HANGUP);
> 	}
> 	ast_bridge_unlock(bridge_channel->bridge);
> 	return 0;
> }
> {noformat}
> The issue here is that if the bridge is currently in a multi-party mixing state, and {{n - 1}} channels leave, we should naturally transition to a two-party bridge with a single channel it. That should eject that channel from the bridge and the bridge should be disposed of.

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