________________________________________
From: sip-implementors-boun...@lists.cs.columbia.edu 
[sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Olle E. Johansson 
[...@edvina.net]

Now one UA sends a SIP request directly between the UA's instead of following 
the route set for the dialog.

- Should this request be dropped?
- Should it be accepted and processed?
- Shout it be responded to with an error message - if so, which one do you 
suggest?
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I suppose the best choice is to process it and return the response based on the 
Via's.  But it doesn't really matter, since the request clearly should not have 
been generated.

I am surprised that any UA performs the checks necessary to determine that this 
has happened.  But if it discovers the problem, it should log it somewhere for 
human interpretation.

Dale

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