[Buildbot-devel] Intermittent Connection.Lost error with Windows slaves

[Thomas Middeldorp]

I've had a similar problem to this when using ssh to run commands on a 
remote server - if the command took too long with no output the ssh 
connection would drop.

I fixed this by setting the ServerAliveInterval option when opening the 
connection. I believe the equivalent option to this for PuTTY is in the 
"Connection" options as "Seconds between keepalives". Alternatively I 
think you should be able to set the option in your sshd_config if you 
want it to apply to all connections.

I haven't actually tested if this option keeps tunnels open as well as 
normal connections, but I think it's worth a shot.

- Thomas


On 7/09/2012 6:18 a.m., Dustin J. Mitchell wrote:
> If you're using an SSH tunnel, it sounds like the network between the
> hosts is complex at best.  I'm guessing that there's some timeout
> there - perhaps in a NAT table, or some session-based firewall -
> that's causing connections to get dropped when they're idle for too
> long -- which can happen during the slower parts of a build.
>
> It's just a guess..
>
> Dustin
>
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