[Tilesathome] Long jobs

[Andrew McCarthy]

Hi folks,

The TAH server appears to re-queue jobs if they've been out with a
client for a while, I'm guessing on the assumption the client has died.

However, some jobs just take a long time, like one on my PC yesterday
that took most of the afternoon. I could see in the TAH tile status that
it was regularly being re-handed out to clients, each of which either
quietly plodded along with it like my PC, or couldn't cope and handed it
back.

To prevent all this wasted bandwidth and duplicated effort, I'm
proposing that the client periodically "touch base" with the server to
simply say "I'm still here!". I don't know what the server's time-out
is, but if it was one hour, the client could touch base every 30
minutes, say.

Does this sound reasonable? It doesn't sound especially difficult (check
the elapsed time between calls to Inkscape?), and I'm willing to have a
go at coding it, but only if I'm not wasting my time :)

Cheers,

Andrew
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