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correctly determine the length of STREAM frames for IETF QUIC

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The length of the data has an influence on the length of the frame (if
it contains the data length), and the length can either consume 1 or 2
bytes due to variable length encoding.
This commit is contained in:
Marten Seemann
2018-02-05 09:01:15 +08:00
parent 38c420a35b
commit 5974c6c113
5 changed files with 134 additions and 4 deletions
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8
internal/wire/stream_frame_legacy.go
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@@ -191,6 +191,14 @@ func (f *StreamFrame) minLengthLegacy(_ protocol.VersionNumber) protocol.ByteCou
return length
}
func (f *StreamFrame) maxDataLenLegacy(maxFrameSize protocol.ByteCount, version protocol.VersionNumber) protocol.ByteCount {
headerLen := f.minLengthLegacy(version)
if headerLen > maxFrameSize {
return 0
}
return maxFrameSize - headerLen
}
// DataLen gives the length of data in bytes
func (f *StreamFrame) DataLen() protocol.ByteCount {
return protocol.ByteCount(len(f.Data))