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feat: global dial queue #314
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ghost
assigned refactor: keep constants in one place
alanshaw
approved these changes
Mar 27, 2019
fix: setting 0 as a blacklist timeout
50 tasks
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This adds a general dial queue to the switch. All dial requests are added to the QueueManager. The QueueManager ensures no more than the maximum parallel dials requests are allowed (currently 50).
This also adds basic blacklisting with a ttl of 120 seconds. If a dial attempt errors, no dials to it will be allowed until the ttl has expired, or the blacklist has been manually cleared. Future iterations of this should add an exponential backoff for blacklisting to better manage repeat offending peers.
This alleviates issues where libp2p discovers a large number of peers, such as through the dht, and dial attempts are made to all of them. High numbers of concurrent dials lead to the cpu overloading.