Hi, "17.2.2 Non-INVITE Server Transaction" doesn't consider the case in which 
the transaction state is "Trying" and the transaction receives from the TU a 
final response, this is:
  - state = "Trying"
  - response from TU = final response

The only case considered is:
   "If the TU passes a final response (status
   codes 200-699) to the server while in the "Proceeding" state, the
   transaction MUST enter the "Completed" state..."

This doesn't make sense since it's totally possible that TU sends a final 
response without sending before a provisional response. It's also considered 
in the diagram of page 139.

Is it a bug? Opinions?

-- 
Iñaki Baz Castillo

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