Hello I would like to ask 2 quick questions. Can a SIP:UAS ask for PRACK using only with Rseq: 1 only? (*omitting*Require: 100rel)?
*1.* SIP/2.0 180 Ringing i:0f4fec9fb0d16a5b CSeq:2 INVITE f:"+306102668000470"<sip:[email protected] >;tag=f946691a85;epid=SC2ecd4a t:<sip:[email protected] :5060;transport=udp>;tag=snl_0008348494 Record-Route:<sip:scscf32.home32.fmc.ath:5090;reg-id=JZ1346337988275455;routing_id=3353bca5f30cb3b43e7ed28a763fed15;lskpmc=SJZ;lr;interface=isc> Record-Route:<sip:10.80.151.151;routing_id=pcscf_a_side;lskpmc=PJZ;lr> v:SIP/2.0/UDP 10.85.202.17:5060;branch=z9hG4bKe29bd0793df7b8142 m:<sip:[email protected];transport=udp> Allow:REGISTER,INVITE,ACK,BYE,CANCEL,NOTIFY,REFER,UPDATE,PRACK *RSeq:1* Date:Thu, 30 Aug 2012 18:11:24 GMT l:0 i.e. *Can the server omit *Require:100rel? *2.* Is there a possibility to have *RSeq:1* for a reason not related to PRACK? I'm asking because, in practice, searching for *RSeq:1* in 1xx responses especially for testing scripts would be the same as searching for *Require: 100rel* right? thanks in advance Manolis _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
