RFC 3261 section 7.3.1 indicates the following and lists a few exceptions: "Multiple header field rows with the same field-name MAY be present in a message if and only if the entire field-value for that header field is defined as a comma-separated list (that is, if follows the grammar defined in Section 7.3)."
Subject is not defined to allow multiples. Subject = ( "Subject" / "s" ) HCOLON [TEXT-UTF8-TRIM] > -----Original Message----- > From: [email protected] [mailto:sip- > [email protected]] On Behalf Of Iñaki Baz > Castillo > Sent: Wednesday, February 25, 2009 5:22 PM > To: [email protected] > Subject: [Sip-implementors] Are two "Subject" headers dissallowed? > > Hi, I receive the following 400 error from a UA that receives an INVITE > with > two Subject headers. Is it correct? > > Thanks. > > > -- > Iñaki Baz Castillo _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
