Re: [Linphone-developers] REGISTER bug

[Simon Morlat]

Hi Klaus,

0.12.2 is prehistoric version. Fortunately this tag bug no more exists
in recent versions.

SImon

Le lundi 28 mars 2011 à 16:42 +0200, Klaus Darilion a écrit :
> 
> Am 25.03.2011 11:38, schrieb Guillaume BERAUDO:
> > Hi Klaus,
> > 
> > Thanks for your email.
> > 
> >> From: <sip:address@hidden>;tag=3925467721
> >> To: <sip:address@hidden>;tag=3925467721
> >> The To header is buggy as it must not contain a tag.
> > 
> > Why do you thing it is buggy?
> > 
> > I read on http://www.ietf.org/rfc/rfc3261.txt #20.39 :
> > 
> > The following are examples of valid To header fields:
> >    To: The Operator <sip:address@hidden>;tag=287447
> >    t: sip:address@hidden
> 
> Yes, it is allowed from the grammer, but not in the context of a
> registration.
> 
> The From/To tags identify dialogs. An out-of-dialog request contains
> only a From-tag. An in-dialog request contains also a To-tag.
> 
> REGISTER does not create a dialog. Thus, the REGISTER is always an
> out-of-dialog request. Even re-Registrations are out-of-dialog thus must
> not have a to-tag (as the to-tag is generated by the UAS).
> 
> See also the RFC: http://tools.ietf.org/html/rfc3261#section-8.1.1.2
> 
> >    A request outside of a dialog MUST NOT contain a To tag; the tag in
> >    the To field of a request identifies the peer of the dialog.  Since
> >    no dialog is established, no tag is present.
> 
> 
> regards
> Klaus
> 
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