I read in one of the previous mail in sip implementors which is attached below. Is that still valid to send "OPTIONS" to a domain. if the bis-5 does not address Registrar anymore, it is not right to send "OPTIONS" to a registrar? if it is right to send "OPTIONS" to Registrar, we either get, reply with allow:register or 501 if not implemented. We can still use that as reply to find the registrar is reachable or not right? please explain. Also, other that this, how do we find if there registrar/proxy is unreachable. Thanks
Jo Hornsby wrote: >> In the rfc2543bis-04 Section 8(OPTIONS), there is a sentence to >>following. >> >> " The method MUST be supported by SIP user agents and registras." >> >> If so, How use to OPTIONS requst in the registras? >> > > Just like any other server would. The simplest implementation, I > guess is going to: > > SIP/2.0 200 OK > [...] > CSeq: n OPTIONS > [...] > Allow: REGISTER > [...] > > There is also scope for Supported:, Accept:, and all the other usual > suspects. bis-05 does not mention registrars any longer. The issue is how one addresses an OPTIONS to a registrar as opposed to some other element. bis-05 allows you to address an OPTIONS to a domain: OPTIONS sip:foobar.com SIP/2.0 I suppose that if the domain supported registration functions, the Allow would indicate that by including REGISTER. Some more text is clearly needed in bis about how OPTIONS is processed when addressed to a domain. -Jonathan R. Markus Hofmann <[EMAIL PROTECTED]> wrote: Hi Vishaka, If you send to a registrar a method which is not REGISTER you will get a response 501 Method not implemented. Greeting Markus Vishaka M schrieb am 08.09.04 20:30:44: > > Hi all > > When a UAC is registered with that registrar/proxy, How do when find if the > registrar/proxy is unreachable or down. Can we send SIP OPTIONS periodically to > registrar/proxy as the RFC 3261 at sec 11 says "As is the case for general UA > behavior, the transaction layer can return a timeout error if the OPTIONS yields no > response. This may indicate that the target is unreachable and hence unavailable" > can a registrar receive OPTIONS? if yes, how does it react to it? or it receives > only Registers requests? > > Is there a better way to find out if the proxy/registrar is reachable or not. thanks > visha > > > --------------------------------- > Do you Yahoo!? > Win 1 of 4,000 free domain names from Yahoo! Enter now. > _______________________________________________ > Sip-implementors mailing list > [EMAIL PROTECTED] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _________________________________________________________ Mit WEB.DE FreePhone? mit hochster Qualitat ab 0 Ct./Min. weltweit telefonieren! http://freephone.web.de/?mc=021201 --------------------------------- Do you Yahoo!? Shop for Back-to-School deals on Yahoo! Shopping. _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
