[asterisk-dev] Broken SIP dialog if INFO messagesreceivedbeforefinal OK

[Olle E. Johansson]

20 apr 2010 kl. 12.21 skrev Nick Lewis:

> It is not clear to me that RFC2976 permits INFO during early media
> 
>   "It is necessary that the mid-session signaling information traverse
>   the post session setup SIP signaling path."

The use of INFO is very poorly documented, but we should be able to handle
other transactions while we have an open INVITE transaction.
We should never send 200 OK on Invite without contact...

The SIP stack needs a lot of love. 
/O
> 
> "post session setup" implies to me that it is permitted only after the
> INVITE transaction has completed (i.e. after OK/ACK). OEJ may know
> better. Even if nesting of invite, reinvite and info transactions is not
> explicitly prohibited by the RFCs it opens a can of worms from both
> protocol and implementation perspectives and is unlikely to be worth all
> the effort needed to support it.
> 
> -- N_L
> 
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* Olle E Johansson - oej at edvina.net
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