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make the outgoing streams map work with stream 0

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Stream 0 is now a valid stream ID used for application data, so the
streams map must be able to (block on) opening this stream.
This commit is contained in:
Marten Seemann 2018-10-11 14:45:45 +01:00
parent 08008b680e
commit 5fc2e12038
4 changed files with 29 additions and 6 deletions
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6
streams_map_outgoing_uni.go
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@ -21,6 +21,7 @@ type outgoingUniStreamsMap struct {
nextStream protocol.StreamID // stream ID of the stream returned by OpenStream(Sync)
maxStream protocol.StreamID // the maximum stream ID we're allowed to open
maxStreamSet bool // was maxStream set. If not, it's not possible to any stream (also works for stream 0)
highestBlocked protocol.StreamID // the highest stream ID that we queued a STREAM_ID_BLOCKED frame for
newStream func(protocol.StreamID) sendStreamI
@ -71,7 +72,7 @@ func (m *outgoingUniStreamsMap) openStreamImpl() (sendStreamI, error) {
if m.closeErr != nil {
return nil, m.closeErr
}
if m.nextStream > m.maxStream {
if !m.maxStreamSet || m.nextStream > m.maxStream {
if m.maxStream == 0 || m.highestBlocked < m.maxStream {
m.queueStreamIDBlocked(&wire.StreamIDBlockedFrame{StreamID: m.maxStream})
m.highestBlocked = m.maxStream
@ -108,8 +109,9 @@ func (m *outgoingUniStreamsMap) DeleteStream(id protocol.StreamID) error {
func (m *outgoingUniStreamsMap) SetMaxStream(id protocol.StreamID) {
m.mutex.Lock()
if id > m.maxStream {
if !m.maxStreamSet || id > m.maxStream {
m.maxStream = id
m.maxStreamSet = true
m.cond.Broadcast()
}
m.mutex.Unlock()