On May 8, 2008, at 2:27 AM, Jiri Kuthan wrote:

> Juha Heinanen wrote:
>> Christer Holmberg writes:
>>
>>> I agree with Hadriel. The idea is to let the client do it, so that
>>> the proxy doesn't need to handle it, e.g. by providing short
>>> registration refresh timers etc in order to make sure the NAT
>>> bindings stay open.
>>
>> christer,
>>
>> could you then, please, restrict the scope of your draft to udp
>> connected UAs, because if they are tcp connected, clients can keep
>> their nat binding open by simply sending double CRLFs.  if they get  
>> back
>> single CRLF, then fine, but if they don't, it is fine too.
>
> True, I didn't realize that, with TCP we don't even need the reverse  
> CRLF.

Well, without the reverse CRLF, you may not notice for 20 minutes that  
your connection is down. The TCP stack will take a while to timeout  
from SYN.

--
Dean
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