Andrew Dunham 4cb1bfee44 net/netcheck: improve determinism in hairpinning test ... If multiple Go channels have a value (or are closed), receiving from them all in a select will nondeterministically return one of the two arms. In this case, it's possible that the hairpin check timer will have expired between when we start checking and before we check at all, but the hairpin packet has already been received. In such cases, we'd nondeterministically set report.HairPinning. Instead, check if we have a value in our results channel first, then select on the value and timeout channel after. Also, add a test that catches this particular failure. Fixes #1795 Change-Id: I842ab0bd38d66fabc6cabf2c2c1bb9bd32febf35 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>		2023-03-24 12:01:23 -04:00
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netcheck_test.go	net/netcheck: improve determinism in hairpinning test	2023-03-24 12:01:23 -04:00
netcheck.go	net/netcheck: improve determinism in hairpinning test	2023-03-24 12:01:23 -04:00