[volunteergrid2-l] [ej3fw] connection timeouts

[Iantcho Vassilev]

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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