[bittorrent] [Bittorrent] Peer Wire Protocol silly question...

Justin Cormack justin at street-vision.com
Fri Sep 23 22:00:12 EDT 2005


On 24 Sep 2005, at 01:28, Elliott Mitchell wrote:

>> From: Justin Cormack <justin at street-vision.com>
>> On Tue, 2005-09-20 at 13:55 +0200, Olaf van der Spek wrote:
>>
>>
>>> Do all (major) platforms support TCP keep alives?
>>>
>>
>> As far as I know it is part of the TCP spec, so yes.
>>
>
> It is so.
>
>
>> However, not all NATs forward them, so the answer might be no in
>> practice.
>>
>> But I am not 100% sure.
>>
>
> I *really* hope you're wrong here. The most recent encounter I had  
> with
> them was with a *&#%@#)%#@*)@ cable modem NAT that closed connections
> after 30 seconds of inactivity, forcing me to tell ssh to send
> keepalives.

Ah. I think we are in luck. I think I didnt realise that by default  
ssh doesnt
send keepalives. So I havent verified that it doesnt, just that your  
average NAT is
a *&#%@#)%#@*)@ pile of *&#%@#)%#@*)@.

We could be safe...




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