Hi,
As far as I now, the transport protocol is specified in Via Header, not in any URI. Then: 1) Using UDP (port 5060 by default), URI shall contain "sip:user@domain"; 2) Using TCP (port 5060 by default), URI shall contain "sips:user@domain"; 3) Using TLS (port 5061 by default), URI shall contain "sip:user@domain". >From RFC 3261, section 19.1.2, page 152 : "(1): The default port value is transport and scheme dependent. The default is 5060 for sip: using UDP, TCP, or SCTP. The default is 5061 for sip: using TLS over TCP and sips: over TCP. (2): The default transport is scheme dependent. For sip:, it is UDP. For sips:, it is TCP." Leonardo ________________________________ De: Gauri Kshirsagar <[email protected]> Para: [email protected] Enviadas: Sexta-feira, 20 de Maio de 2011 6:29 Assunto: Re: [Sip-implementors] Query regarding transport selection In that case if I want the application to use tls over *sip scheme* how can it be specified in the target uri without using transport="tls" parameter which has been depricated as per RFC 3261. On Fri, May 20, 2011 at 10:01 AM, ABHISHEK GUPTA <[email protected]>wrote: > It should be udp by default. > Regards > Abhishek > > > On Fri, May 20, 2011 at 2:08 PM, Gauri Kshirsagar <[email protected]>wrote: > >> Hi, >> >> This is a query regarding selection of transport while sending a >> SIP request. If the target uri is of the form >> >> sip:[email protected]:5061 what transport should be used ? >> >> Should it be udp as per rfc 3263, section 4.1 which says:- >> >> "Otherwise,if no transport protocol is specified, but the TARGET is a >> numeric IP address, the client SHOULD use UDP for a SIP URI, and TCP for a >> SIPS URI." >> Or should it be tls since port 5061 which is default for tls is present in >> uri. >> >> >> Regards, >> Gauri >> _______________________________________________ >> 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 _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
