Bug 26387

Summary:	Complete implementation of the connection parameter 'immutable-streams'
Product:	Telepathy	Reporter:	Mikhail Zabaluev <mikhail.zabaluev>
Component:	rakia	Assignee:	Mikhail Zabaluev <mikhail.zabaluev>
Status:	RESOLVED FIXED	QA Contact:	Telepathy bugs list <telepathy-bugs>
Severity:	enhancement
Priority:	medium	CC:	smcv
Version:	git master	Keywords:	patch
Hardware:	Other
OS:	All
Whiteboard:	review+
i915 platform:		i915 features:

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 1 Mikhail Zabaluev 2010-02-02 06:58:55 UTC

Implementation branch:
http://git.collabora.co.uk/?p=user/zabaluev/telepathy-sofiasip.git;a=shortlog;h=refs/heads/total-immutability

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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