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implement parsing and writing of the new STREAM frames

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This commit is contained in:
Marten Seemann 2017-11-17 07:12:39 -08:00
parent 1a515d1371
commit 11f746a183
14 changed files with 1015 additions and 601 deletions
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9
stream_framer.go
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@ -9,6 +9,7 @@ import (
type streamFramer struct {
streamsMap *streamsMap
cryptoStream streamI
version protocol.VersionNumber
connFlowController flowcontrol.ConnectionFlowController
@ -20,11 +21,13 @@ func newStreamFramer(
cryptoStream streamI,
streamsMap *streamsMap,
cfc flowcontrol.ConnectionFlowController,
v protocol.VersionNumber,
) *streamFramer {
return &streamFramer{
streamsMap: streamsMap,
cryptoStream: cryptoStream,
connFlowController: cfc,
version: v,
}
}
@ -63,7 +66,7 @@ func (f *streamFramer) PopCryptoStreamFrame(maxLen protocol.ByteCount) *wire.Str
StreamID: f.cryptoStream.StreamID(),
Offset: f.cryptoStream.GetWriteOffset(),
}
frameHeaderBytes, _ := frame.MinLength(protocol.VersionWhatever) // can never error
frameHeaderBytes, _ := frame.MinLength(f.version) // can never error
frame.Data = f.cryptoStream.GetDataForWriting(maxLen - frameHeaderBytes)
return frame
}
@ -73,7 +76,7 @@ func (f *streamFramer) maybePopFramesForRetransmission(maxLen protocol.ByteCount
frame := f.retransmissionQueue[0]
frame.DataLenPresent = true
frameHeaderLen, _ := frame.MinLength(protocol.VersionWhatever) // can never error
frameHeaderLen, _ := frame.MinLength(f.version) // can never error
if currentLen+frameHeaderLen >= maxLen {
break
}
@ -106,7 +109,7 @@ func (f *streamFramer) maybePopNormalFrames(maxBytes protocol.ByteCount) (res []
frame.StreamID = s.StreamID()
frame.Offset = s.GetWriteOffset()
// not perfect, but thread-safe since writeOffset is only written when getting data
frameHeaderBytes, _ := frame.MinLength(protocol.VersionWhatever) // can never error
frameHeaderBytes, _ := frame.MinLength(f.version) // can never error
if currentLen+frameHeaderBytes > maxBytes {
return false, nil // theoretically, we could find another stream that fits, but this is quite unlikely, so we stop here
}