inline.
Jonathan Rosenberg wrote:
>
> "Vijay K. Gurbani" wrote:
>
>>Inline.
>>
>>Attila Sipos wrote:
>>
>>>I have a question regarding section "12.2.1.1 Generating the Request"
>>>in RFC2543 bis-09.
>>>
>>>
>>>
>>>> If the route set is not empty, and its first URI does not contain
>>>
>>the
>>
>>>> lr parameter, the UAC MUST place the first URI from the route set
>>>> into the Request-URI, stripping any parameters that are not allowed
>>>> in a Request-URI. The UAC MUST add a Route header field containing
>>>> the remainder of the route set values in order, including all
>>>> parameters. The UAC MUST then place the remote target URI into the
>>>> Route header field as the last value.
>>>>
>>>> For example, if the remote target is sip:user@remoteua and the route
>>>> set contains
>>>>
>>>> <sip:proxy1>,<sip:proxy2>,<sip:proxy3;lr>,<sip:proxy4>
>>>>
>>>>
>>>> The request will be formed with the following Request-URI and Route
>>>> header field:
>>>>
>>>> METHOD sip:proxy1
>>>> Route: <sip:proxy2>,<sip:proxy3;lr>,<sip:proxy4>,<sip:user@remoteua>
>>>>
>>>The last sentence in the first paragraph says:
>>>"The UAC MUST then place the remote target URI into the
>>>Route header field as the last value."
>>>
>>>My question:
>>>Is the remote traget URI added to the "route set"?
>>
>>Yes; it is appended to the Route set.
>
> No, that is not right. Please see Robert's response on this - Robert is
> correct.
I am afraid, as far as I can tell, in the particular case that Attila
is describing above, the remote target URI will be added to the Route
set because *the topmost entry in the Route set did NOT contain a
"lr"*. Thus, the UA is dealing with a next hop server that is not
-09bis compliant.
From a UAC's point of view, the target URI is used as the R-URI only
when the Route set is empty, or the first entry in the Route set
contains an "lr" (thereby specifying a next hop server that is -09bis
compliant).
- vijay
--
Vijay K. Gurbani vkg@{lucent.com,research.bell-labs.com,acm.org}
Wireless Networks Group/Internet Software and Services
Lucent Technologies/Bell Labs Innovations, 2000 Lucent Lane, Rm 6G-440
Naperville, Illinois 60566 Voice: +1 630 224 0216
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