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send STREAMS_BLOCKED frame when MAX_STREAMS frame allows too few streams

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This commit is contained in:
Marten Seemann 2020-10-16 17:28:20 +07:00
parent ff639a4d81
commit 5c5e1024e7
5 changed files with 64 additions and 11 deletions
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6
streams_map_outgoing_uni.go
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@ -119,6 +119,8 @@ func (m *outgoingUniStreamsMap) openStream() sendStreamI {
return s
}
// maybeSendBlockedFrame queues a STREAMS_BLOCKED frame for the current stream offset,
// if we haven't sent one for this offset yet
func (m *outgoingUniStreamsMap) maybeSendBlockedFrame() {
if m.blockedSent {
return
@ -172,8 +174,10 @@ func (m *outgoingUniStreamsMap) SetMaxStream(num protocol.StreamNum) {
}
m.maxStream = num
m.blockedSent = false
if m.maxStream < m.nextStream-1+protocol.StreamNum(len(m.openQueue)) {
m.maybeSendBlockedFrame()
}
m.unblockOpenSync()
// TODO(#2826): it might be necessary to send a STREAMS_BLOCKED frame
}
// unblockOpenSync unblocks the next OpenStreamSync go-routine to open a new stream