Bug 26387 - Complete implementation of the connection parameter 'immutable-streams'
Summary: Complete implementation of the connection parameter 'immutable-streams'
Status: RESOLVED FIXED
Alias: None
Product: Telepathy
Classification: Unclassified
Component: rakia (show other bugs)
Version: git master
Hardware: Other All
: medium enhancement
Assignee: Mikhail Zabaluev
QA Contact: Telepathy bugs list
URL:
Whiteboard: review+
Keywords: patch
Depends on:
Blocks:
 
Reported: 2010-02-02 06:56 UTC by Mikhail Zabaluev
Modified: 2010-02-16 00:28 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments

Description Mikhail Zabaluev 2010-02-02 06:56:33 UTC 
The parameter 'immutable-streams' have been added to prevent sending re-INVITEs with updated media description for all SIP call channels on a particular connection. The rationale for that is to avoid call failures and media breakdowns on services that handle re-INVITE transactions or the associated media session renegotiations improperly.

The current implementation still does not cover two cases:

1. Stream directionality changes caused by the client calling RequestStreamDirection (see bug #24936 comment #24 for more elaborate specification of this case).

2. Handling of Media.StreamHandler.CodecsUpdated. For this case, the implementation can be subtle: don't force a renegotiation, but send the updated codec description in any subsequent offer-answers if caused by the remote party.
Comment 2 Mikhail Zabaluev 2010-02-08 06:46:02 UTC 
Please review
Comment 3 Simon McVittie 2010-02-08 06:56:18 UTC 
review+
Comment 4 Mikhail Zabaluev 2010-02-16 00:28:11 UTC 
The fix is merged upstream and available under tag telepathy-sofiasip-0.6.0, pending a proper fd.o release Real Soon Now.

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