pions / webrtc / 2372

81%

master: 81%

Pull #488

travis-ci

Fix deadlock on DTLS shutdown

DTLS shutdown deadlocks if Close is called before startup completes,
because the DTLS connection hasn't finished yet we don't have handles to
close anything.

This updates DTLS to follow how SCTP is shutdown, by shutting down the
nextConn (ICE in this case) we can shutdown the subsystem. By closing ICE first,
DTLS (and then SCTP) close properly no matter what state they are in.

Resolves #487

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