REGISTER 200 does not create a dialog. Thus assuming REGISTER is not sent within a dialog, it would never contain a To tag.
RFC 3665 section 2.4 provides an example. > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Tarun2 Gupta > Sent: Friday, November 21, 2008 12:07 AM > To: [email protected] > Subject: [Sip-implementors] Query regarding 'To' tag in > REGISTER request > > Hi All > > Consider the following scenario: > > REGISTER------------------------------>with Expires 3600 > <-------------------------------------------- 200 ok with a > 'To' tag and Expires 3600 > > Successful registration done. > .. > .. > > REGISTER-----------------------------> with Expires 0 and Contact * > > Is it ok for this de-REGISTER request not to have the 'To' > tag as received in the 200 ok response? > Whats the role of Tags in case of a REGISTER request? > > Thanks in advance. > Tarun Gupta _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
