David Goulet feed375f19 prop224: Implement a service intro point failure cache
Imagine a Tor network where you have only 8 nodes available due to some
reasons. And your hidden service wants 8 introduction points. Everything is
fine but then a node goes down bringing the network to 7. The service will
retry 3 times that node and then give up but keep it in a failure cache for 5
minutes (INTRO_CIRC_RETRY_PERIOD) so it doesn't retry it non stop and exhaust
the maximum number of circuit retry.

In the real public network today, this is unlikely to happen unless the
ExcludeNodes list is extremely restrictive.

Signed-off-by: David Goulet <dgoulet@torproject.org>
2017-08-08 20:29:33 -04:00
2017-06-29 18:45:49 -04:00
2017-07-13 16:55:06 -04:00
2017-03-15 16:13:17 -04:00
2017-07-07 10:49:48 -04:00
2017-06-29 18:45:49 -04:00
2017-03-15 16:13:17 -04:00

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