[Kamailio-Users] Is Timestamp supported in kamailio?

Iñaki Baz Castillo ibc at aliax.net
Tue Mar 16 17:48:04 CET 2010


2010/3/16 Iñaki Baz Castillo <ibc at aliax.net>:


> http://tools.ietf.org/html/rfc3261#section-20.38
>
> --------------------------------------------------------
> RFC 3261 - 20.38 Timestamp
>
>   The Timestamp header field describes when the UAC sent the request to
>   the UAS.
>
>   See Section 8.2.6 for details on how to generate a response to a
>   request that contains the header field.  Although there is no
>   normative behavior defined here that makes use of the header, it
>   allows for extensions or SIP applications to obtain RTT estimates.


8.2.6.1 Sending a Provisional Response
   [...]
   When a 100 (Trying) response is generated, any Timestamp header field
   present in the request MUST be copied into this 100 (Trying)
   response.  If there is a delay in generating the response, the UAS
   SHOULD add a delay value into the Timestamp value in the response.
   This value MUST contain the difference between the time of sending of
   the response and receipt of the request, measured in seconds.


-- 
Iñaki Baz Castillo
<ibc at aliax.net>




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