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fix race condition in GetStream in outgoing streams map

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This commit is contained in:
Marten Seemann 2018-02-22 09:21:59 +08:00
parent 77a4bf17ca
commit 4fa68b0788
6 changed files with 15 additions and 3 deletions
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3
streams_map_incoming_uni.go
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@ -85,6 +85,9 @@ func (m *incomingUniStreamsMap) GetOrOpenStream(id protocol.StreamID) (receiveSt
m.mutex.RUnlock()
m.mutex.Lock()
// no need to check the two error conditions from above again
// * maxStream can only increase, so if the id was valid before, it definitely is valid now
// * highestStream is only modified by this function
var start protocol.StreamID
if m.highestStream == 0 {
start = m.nextStream