Hi, Joel,
Hi all,
In RFC 3515, section 2, second paragraph, it states, "Unless stated
otherwise, the protocol for emitting and responding to a REFER request
are identical to those for a BYE request in [1]." [1] is RFC 3261.
In RFC 3261, section 15.1.1, it states, "The UAC MUST consider the
session terminated (and therefore stop sending or listening for media)
as soon as the BYE request is passed to the client transaction."
So, if my UA sends a REFER, does it automatically stop sending/receiving RTP?
I THINK what RFC 3515 is trying to say is, "the protocol for deciding whether you have to increment CSeq or send through a proxy, etc. is identical to those for a BYE request used as an example in Section 16 of [1]", but I agree that the 3515 text is confusing on this point.
I note that RFC 2976 (INFO) has text like
2.4 Behavior of SIP User Agents
Unless stated otherwise, the protocol rules for the INFO request
governing the usage of tags, Route and Record-Route,
retransmission and reliability, CSeq incrementing and message
formatting follow those in [1] as defined for the BYE request.and
2.5 Behavior of SIP Proxy and Redirect Servers
2.5.1 Proxy Server
Unless stated otherwise, the protocol rules for the INFO
request at a proxy are identical to those for a BYE request as
specified in [1].
2.5.2 Forking Proxy Server
Unless stated otherwise, the protocol rules for the INFO
request at a proxy are identical to those for a BYE request as
specified in [1].
2.5.3 Redirection Server
Unless stated otherwise, the protocol rules for the INFO
request at a proxy are identical to those for a BYE request as
specified in [1].
So I think 3515 is trying to say the same thing in one sentence, but that sentence is just too overloaded...
Spencer
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