Hi Bogdan: RFC3665 didn't mention any stateful or stateless within all the document. So I think it is just not covering it.
By the way, is openser a stateless proxy server? I think it is a stateful proxy server! Can I config it to be a pure stateless or stateful proxy server? Thank you. Best Regards, Fangyu Ling > Klaus, > > CANCEL is hop-by-hop only in stateful processing and in this case, yes, > it has only on VIA. But if you have stateless processing, CANCEL is > end-2-end and it will have multiple VIAs... > > Does 3665 obsoletes stateless SIP or it is just not covering it??? > > regards, > bogdan > > Klaus Darilion wrote: >> Looks like it is defined clearly and openser is not 100% standard conform. >> >> regards >> klaus >> >> fancy wrote: >> >>> Hi Klaus: >>> RFC 3665 page 54 line 4: Sorry it's RFC 3261 page 54 line 4: >>> A CANCEL constructed by a >>> client MUST have only a single Via header field value matching the >>> top Via value in the request being cancelled. >>> >>> and RFC 3665 at page 53: Sorry it's RFC 3261 at page 53: >>> CANCEL is referred to as a "hop-by-hop" request, since it is >>> responded to at each stateful proxy hop. >>> >>> and RFC 3665 at page 21: Sorry it's RFC 3261 at page 21: >>> Client: A client is any network element that sends SIP requests >>> and receives SIP responses. Clients may or may not interact >>> directly with a human user. User agent clients and proxies are >>> clients. >>> >>> So, for my opinion, the role of proxy in this case of RFC 3665 section 3.8 >>> is a client when it sends CANCEL message to Bob. >>> >>> If I misunderstand any RFC meanings, please correct me. >>> Thank you very much. >>> >>> Best Regards, >>> Fangyu Ling >>> >>> >>> >>>> fancy wrote: >>>> >>>>> According to RFC 3665 section 3.8 and RFC 3261 section 9, >>>>> there is only one via header in CANCEL message >>>>> (message F11, F13 at page 72 of RFC 3665). >>>>> >>>> Hi! >>>> >>>> I could find it in RFC 3665, but not in 3261. Where exactly in RFC 3261 >>>> is mentioned that the CANCEL has only 1 Via header? >>>> >>>> Further, the example has only one Via header - but I could not find any >>>> definition if this is a MUST or not. >>>> >>>> >>>>> How can I remove the 2nd via header? >>>>> >>>> You would have to modify tm module and change the code which generates >>>> the CANCEL message. >>>> >>>> regards >>>> klaus >>>> _______________________________________________ Users mailing list Users@openser.org http://openser.org/cgi-bin/mailman/listinfo/users