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Ran 08 May 2018 03:44AM UTC

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Committed 08 May 2018 03:18AM UTC coverage: 53.771%. First build

Job # RACE=false

Build Type

push

travis-ci

Committed by

cfromknecht

Commit Message

server: add peer connection callback scheduling

This commit adds a simple scheduling mechanism for
resolving potential deadlocks when dropping a stale
connection (via pubkey inspection).

Ideally, we'd like to wait to activate a new peer until
the previous one has exited entirely. However, the current
logic attempts to disconnect (and wait) until the peer
has been cleaned up fully, which can result in
deadlocks with other portions of the codebase, since
other blocking methods may also need acquire the mutex
before the peer can exit.

When existing connections are replaced, they now
schedule a callback that is executed inside the
peerTerminationWatcher. Since the peer now waits for
the clean exit of the prior peer, this callback is
now executed with a clean slate, adds the peer to
the server's maps, and initiates peer's Start() method.

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