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net/netcheck: lower the hairpin check timeout to 100ms. 

This single check is the long pole for netcheck, and significantly slows down magicsock
tests.

Signed-off-by: David Anderson <danderson@tailscale.com>
reviewable/pr609/r1
David Anderson 2020-07-25 23:17:09 +00:00 committed by Dave Anderson
parent 25288567ec
commit a2b4ad839b
1 changed files with 1 additions and 1 deletions
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2
net/netcheck/netcheck.go
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@ -55,7 +55,7 @@ const (
stunProbeTimeout = 3 * time.Second
// hairpinCheckTimeout is the amount of time we wait for a
// hairpinned packet to come back.
hairpinCheckTimeout = 500 * time.Millisecond
hairpinCheckTimeout = 100 * time.Millisecond
// defaultActiveRetransmitTime is the retransmit interval we use
// for STUN probes when we're in steady state (not in start-up),
// but don't have previous latency information for a DERP