Are you concerned with finding dialogs or with transaction matching? I think the latter is straightforward but the former is tricky. Essentially, you have to use the From and To addresses in place of tags. Gets messy if from and to are both from the same IP address and a port has not been speciifed - especially for dialog statefull proxies dealing with symmetrical requests. Unless you go way way back, most implementations (even old ones) have at least from tags so it is reasonable to just reject messages without from tags (in my limited experience anyway).
Regards Ranga. Monica Ingudam wrote: >Hi All, > >I have a query regarding the matching rules defined in section 17.2.3, RFC >3261, for handling backwards compatibility with RFC 2543 compliant >implementations. The matching rules for any request includes matches for To >tag and From tag. The earlier draft of RFC 2543 doesn't mandate the To or >>From tag. How should I handle request without To or From tag ? Am I missing >some info. ? It will be great if someone can get back to me regarding the >same. > >Thanks and Regards >Monica Ingudam >Huawei Technologies, Bangalore > > >_______________________________________________ >Sip-implementors mailing list >[EMAIL PROTECTED] >http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > -- M. Ranganathan N.I.S.T. Advanced Networking Technologies Division 100 Bureau Drive, Stop 8920, Gaithersburg, MD 20899 tel:301-975-3664 fax:301-590-0932 http://www.antd.nist.gov/index.html mailto:[EMAIL PROTECTED] Advanced Networking Technologies for the people! _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
