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Fix AMI redirect action with two channels failing to redirect both channels.

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The AMI redirect action can fail to redirect two channels that are bridged
together.  There is a race between the AMI thread redirecting the two
channels and the bridge thread noticing that a channel is hungup from the
redirects.

* Made the bridge wait for both channels to be redirected before exiting.

* Made the AMI redirect check that all required headers are present before
proceeding with the redirection.

* Made the AMI redirect require that any supplied ExtraChannel exist
before proceeding.  Previously the code fell back to a single channel
redirect operation.

(closes issue ASTERISK-18975)
Reported by: Ben Klang

(closes issue ASTERISK-19948)
Reported by: Brent Dalgleish
Patches:
      jira_asterisk_19948_v11.patch (license #5621) patch uploaded by rmudgett
Tested by: rmudgett, Thomas Sevestre, Deepak Lohani, Kayode

Review: https://reviewboard.asterisk.org/r/2243/
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Merged revisions 378356 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 378358 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@378374 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2013-01-02 21:23:16 +00:00
parent 8fb5bdce9a
commit 5601f3be43
3 changed files with 119 additions and 54 deletions
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15
include/asterisk/channel.h
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@@ -903,12 +903,19 @@ enum {
* some non-traditional dialplans (like AGI) to continue to function.
*/
AST_FLAG_DISABLE_WORKAROUNDS = (1 << 20),
/*! Disable device state event caching. This allows allows channel
* drivers to selectively prevent device state events from being cached
* by certain channels such as anonymous calls which have no persistent
* represenatation that can be tracked.
/*!
* Disable device state event caching. This allows channel
* drivers to selectively prevent device state events from being
* cached by certain channels such as anonymous calls which have
* no persistent represenatation that can be tracked.
*/
AST_FLAG_DISABLE_DEVSTATE_CACHE = (1 << 21),
/*!
* This flag indicates that a dual channel redirect is in
* progress. The bridge needs to wait until the flag is cleared
* to continue.
*/
AST_FLAG_BRIDGE_DUAL_REDIRECT_WAIT = (1 << 22),
};
/*! \brief ast_bridge_config flags */