I could be convinced that there should be some normative specification 
of the *minimum* message size that all sip clients and servers MUST be 
prepared to support. And perhaps it need not be the same for all kinds 
of nodes. It seems more important that middleboxes (whether proxies, 
SBCs, or whatever) not impose undue restrictions on the UAC and UAS.

But I don't think this is the right draft for it.\

        Paul

Hadriel Kaplan wrote:
> 
>> -----Original Message-----
>> From: Paul Kyzivat [mailto:[EMAIL PROTECTED]
>>
>> Spencer Dawkins wrote:
>>> Is it obvious to everyone what the proxy/UA/middlebox should return when
>>> presented with a header/body larger than $SOME_VALUE?
>> Well, 513 "Message Too Large" seems pretty clear.
> 
> Yeah, I don't think that's an issue.  The issue is more that the designers of 
> those UA's/servers didn't take size into account, and thus always try the 
> bigger size, and don't have an alternative mechanism when they get the 513. 
> (and they don't remember the size restriction for other requests, so they 
> keep doing it again and again and again...until they get blacklisted or 
> throttled)
> 
> -hadriel
> 
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