> Hi, there,
> In Bis03, page 88
>
> "When a stateful proxy receives a request, it checks the To, From
> (including tags), Call-ID and CSeq against
> existing request records. If the tuple exists, the request is a
> retransmission. The provisional or final response
> sent previously is retransmitted, as per the server state machine."
>
> Should the server not to consider a spiral as a retransmission?
Ummm... I'm not sure I totally follow your question,
but I'll have a stab. If you're asking if what it's
checking here is enough, then you're right to query,
since it isn't. The request will be a retransmission
based on the { From, To, Call-ID, CSeq, Request-URI,
topmost-Via } tuple. I'd also note that any tag
parameter is significant in both the From and the To
(something which is perhaps slightly ambiguous in the
quoted text).
HTH,
- Jo.
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