There are many such headers like: P-Preferred-Identity, P-Associated-Uri, P-Asserted-Identity, Proxy-Authenticate, History-Info, Supported, Require, all variations of Accept. Even, all the Via headers can be queried by proxy for loop detection. In my opinion, if you are planning to write some parser APIs for multiple headers, better give access to all the headers of same type instead of just top most header.
www.veraznetworks.com ~Vikram On Tue, Mar 11, 2008 at 9:45 PM, Iñaki Baz Castillo <[EMAIL PROTECTED]> wrote: > Hi, some headers can appear more than one time: > - Various COMA sepparated values in an unique header row. > - Various headers with same header-name. > > For example: > > Via: SIP/2.0/UDP 88.99.0.210;branch=z9hG4bKded7.489e8e96.0 > Via: SIP/2.0/UDP 192.168.1.58;received=1.2.3.4;branch=z9hG4bKvsvfsbjg > > or: > > Via: SIP/2.0/UDP 88.99.0.210;branch=z9hG4bK035a.0a4552d7.0,SIP/2.0/UDP > 192.168.1.58;received=1.2.3.4;branch=z9hG4bKvsvfsbjg > > I'd like to know if there is any case of header in with a SIP node needs to > examinate not just the top value but the second, third, last... > > For example, in the case of "Via" header AFAIK a SIP node jsut needs to > parse and modify the top Via header, but no others Via values. > > Thanks a lot. > > > -- > Iñaki Baz Castillo > [EMAIL PROTECTED] > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
