[volunteergrid2-l] [ej3fw] connection timeouts

[Steve Dodson]

Thanks Brian for looking into this!  The timeout config has been added to
both rhp99 and hiro

On Mon, Mar 26, 2012 at 9:00 AM, Iantcho Vassilev <ianchov at gmail.com> wrote:

> timeout.keepalive=120 added
>
>
> Great work :)
>
> Iantcho
>
>
> On Mon, Mar 26, 2012 at 17:28, Shawn Willden <shawn at willden.org> wrote:
>
>> Great work, Brian!
>>
>> I've added the keepalive to my configuration.  I'll watch it for a bit to
>> see if the behavior looks good.
>>
>>
>> On Sun, Mar 25, 2012 at 11:40 PM, Brian Warner <warner at lothar.com> wrote:
>>
>>>
>>> I did some brief digging this afternoon, uploading small files and
>>> watching with a packet sniffer. I was connected to 15 out of 17 servers
>>> (all but ianchov's [aty4r] and slush-backup's [2na4j]).
>>>
>>> One thing I observed was that my connection to stercor's server (ej3fw)
>>> was dropping and reconnecting about once every 16 minutes. I noticed
>>> this by looking at the "Since" column on the welcome page's server list:
>>> it shows a timestamp of a few seconds after node reboot for most
>>> servers, but that one server showed a fairly recent timestamp, changing
>>> every once in a while.
>>>
>>> I think I figured it out, and have a workaround (as well as notes on
>>> tools to build to help diagnose the issue more easily). I'll write a
>>> longer letter to the tahoe-dev list with the details, so everyone can
>>> see them. For VG2's purposes, my advice is to do at least one of:
>>>
>>>  1: add [node]timeout.keepalive=120 to all client's tahoe.cfg
>>>  2: have stercor add timeout.keepalive=120 to the server's tahoe.cfg
>>>  3: have stercor reconfigure the NAT/router box to increase the timeout
>>>    for "idle" TCP connections to at least 10 minutes (it currently
>>>    might be set to more like 5 minutes)
>>>
>>> I this this might explain a few problems, but I've certainly seen others
>>> that this doesn't account for. I'll keep digging.
>>>
>>> cheers,
>>>  -Brian
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>>
>>
>>
>> --
>> Shawn
>>
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>
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-- 
soli Deo gloria,

Steve Dodson
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