Re: [Sip] Draft: draft-holmberg-sip-keep-00.txt

[Dean Willis <dean.willis at softarmor.com>]

On May 9, 2008, at 12:48 AM, Juha Heinanen wrote:

> Dean Willis writes:
>
>> It's about keeping your NAT binding alive and KNOWING that it is
>> alive, rather than just hoping. That requires bidirectional traffic.
>
> yes and as i have said many times, CRLF has already been implemented  
> in
> ser and openser proxies.

But how does a UA know in advance that a proxy is going to send it?  
And how does the UA know that it is coming from a proxy in response to  
its own CRLF stream, and is not an artifact of an echoing NAT or other  
weirdness?

--
Dean
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