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fix race when stream.Read and CancelRead are called concurrently

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This commit is contained in:
Marten Seemann
2021-07-29 13:41:40 +02:00
parent 8906148682
commit fbc30cd942
2 changed files with 54 additions and 5 deletions
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5
internal/flowcontrol/stream_flow_controller.go
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@@ -109,7 +109,10 @@ func (c *streamFlowController) AddBytesRead(n protocol.ByteCount) {
}
func (c *streamFlowController) Abandon() {
if unread := c.highestReceived - c.bytesRead; unread > 0 {
c.mutex.Lock()
unread := c.highestReceived - c.bytesRead
c.mutex.Unlock()
if unread > 0 {
c.connection.AddBytesRead(unread)
}
}