[SIPForum-discussion] diff between req URI & To header

[Vijay Tiwari]

one more thing i need to add on this, if there is no record-route header
field there in message then below statement is correct but if there is any
record-route header field in message then next receiver of the request is
value of record-route header.

thanks
vijay



>
>   On Mon, Jan 4, 2010 at 8:39 AM, AMIT ANAND <amiit.anand at gmail.com>wrote:
>
>> In a nut shell,
>>
>> Request URI tell about immediate next receiver of the request and TO URI
>> tells about the actual receiver of the request or the party to whom this
>> call will actually go.
>>
>> Although a B2BUA can rewrite any thing.
>>
>> Thanks
>> Amit
>>
>>
>> On Mon, Jan 4, 2010 at 5:45 AM, M. Ranganathan <mranga at gmail.com> wrote:
>>
>>> Or put another way:
>>>
>>> The To address is an Address Of Record. As a sip request is routed
>>> through multiple proxy servers from UAC to UAS, the To header is never
>>> re-written by the proxy server but the request URI address can be
>>> re-written.
>>>
>>> Notice that a Back To Back user agent can re-write anything it wants to.
>>>
>>>
>>> On Sun, Jan 3, 2010 at 2:47 AM, Nitin Kapoor <nitinkapoorr at gmail.com>
>>> wrote:
>>> > Mrinal,
>>> >
>>> > The To header field identifies the original recipient of the request
>>> > designated by the user identified in the From field. The original
>>> recipient
>>> > may or may not be the UAS processing the request, due to call
>>> forwarding or
>>> > other proxy operations.
>>> >
>>> > However, the Request-URI identifies the UAS that is to process the
>>> request.
>>> >
>>> > And according To RFC..
>>> >
>>> > Request-URI
>>> >
>>> > The Request-URI is a special form of SIP URI and indicates the resource
>>> to
>>> > which the request is being sent, also known as the
>>> > request target
>>> >
>>> > TO Header
>>> >
>>> > The To header field is a required header field in every SIP message
>>> used to
>>> > indicate the recipient of the request. Any responses generated by a
>>> user
>>> > agent will contain this header field with the addition of a tag.
>>> >
>>> >
>>> > Thanks,
>>> > Nitin Kapoor
>>> >
>>> > 2010/1/1 mrinal k <mrinal.80 at gmail.com>
>>> >>
>>> >> Hello everybody,
>>> >> Can anybodty pls tel me the diff between Request  URI & To header?
>>> >>
>>> >>
>>> >> thanks
>>> >> Mrinal
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>>> >
>>> >
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>>> >
>>>
>>>
>>>
>>> --
>>> M. Ranganathan
>>>  _______________________________________________
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>>
>>
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>>
>
>
> --
> They can because they think they can.
>
>


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They can because they think they can.
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