Comment in line
-Rockson
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Christer Holmberg
Sent: Tuesday, June 24, 2008 4:05 PM
To: Jeroen van Bemmel
Cc: [email protected]
Subject: Re: [Sip] Draft submission: draft-ietf-sip-199-00
Hi,
>Should the 199 response contain a Contact header? And if yes, in case a
>proxy sends it, should it contain the address of that proxy (since the UAS
>already sent a final response)?
IF the 199 is sent reliably be the proxy must contain a Contact header
containing the address of the proxy, yes.
>Should we say that a proxy may only generate and send a 199 when it
>receives a final error response on an INVITE client Transaction which
>was in the PROCEEDING state? (i.e. 1xx response was received before, so
>conceptually sending the 199 response is an action associated with the
>transition from PROCEEDING to COMPLETED)
I am not sure I understand. The idea IS to send 199 when a final error response
is received by the forking proxy, if a 18x has previously been received.
[Rockson] PROCEEDING does not mean early-dialog is established, 100 Trying also
move INVITE client Transaction to PROCEEDING state.
Also, a forking proxy with multiple INVITE client Transaction
may receive/forward 180 from one of them, and receive no provisional resp and
final resp directly
from the other one, so INVITE client Transaction's state is
not dependable. The decision making must be done in TU.
Regards,
Christer
Christer Holmberg wrote:
> Hi,
>
> I agree it may be a good idea to not forbid sending it reliably.
>
> I do think it would be good to have text, saying that it can be sent
> unreliable even if reliable responses are required, though, so that proxies
> aren't forced to terminate PRACKs etc.
>
> Regards,
>
> Christer
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
> [EMAIL PROTECTED]
> Sent: 21. kesäkuuta 2008 1:38
> To: [email protected]
> Subject: Re: [Sip] Draft submission: draft-ietf-sip-199-00
>
> From: "Christer Holmberg" <[EMAIL PROTECTED]>
>
> [CHH] Whether the text should be in the document at all depends on if we
> allow 199 to be sent reliably in the first place. Based on the comments
> received so far we should not mandate 199 to be sent reliably, even if
> 100rel is required by the UAC. But, the question if whether we want to
> FORBID sending it reliably.
>
> If we ever might allow 199 to be used for HERFP, we should admit the
> possibility of sending it reliably in the first draft. Otherwise, we'll be
> locked out of sending it reliably in the future.
>
> Dale
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