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implement the MAX_DATA and MAX_STREAM_DATA frames

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For gQUIC WINDOW_UPDATEs are converted to MAX_DATA and MAX_STREAM_DATA,
respectively.
This commit is contained in:
Marten Seemann
2017-11-01 15:29:15 +07:00
parent ccb2e9a2df
commit 0f1f1c8d41
18 changed files with 512 additions and 168 deletions
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49
internal/wire/window_update_frame.go
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@@ -7,44 +7,29 @@ import (
"github.com/lucas-clemente/quic-go/internal/utils"
)
// A WindowUpdateFrame in QUIC
type WindowUpdateFrame struct {
type windowUpdateFrame struct {
StreamID protocol.StreamID
ByteOffset protocol.ByteCount
}
//Write writes a RST_STREAM frame
func (f *WindowUpdateFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error {
// ParseWindowUpdateFrame parses a WINDOW_UPDATE frame
// The frame returned is
// * a MAX_STREAM_DATA frame, if the WINDOW_UPDATE applies to a stream
// * a MAX_DATA frame, if the WINDOW_UPDATE applies to the connection
func ParseWindowUpdateFrame(r *bytes.Reader, version protocol.VersionNumber) (Frame, error) {
f, err := ParseMaxStreamDataFrame(r, version)
if err != nil {
return nil, err
}
if f.StreamID == 0 {
return &MaxDataFrame{ByteOffset: f.ByteOffset}, nil
}
return f, nil
}
func (f *windowUpdateFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error {
b.WriteByte(0x4)
utils.GetByteOrder(version).WriteUint32(b, uint32(f.StreamID))
utils.GetByteOrder(version).WriteUint64(b, uint64(f.ByteOffset))
return nil
}
// MinLength of a written frame
func (f *WindowUpdateFrame) MinLength(version protocol.VersionNumber) (protocol.ByteCount, error) {
return 1 + 4 + 8, nil
}
// ParseWindowUpdateFrame parses a RST_STREAM frame
func ParseWindowUpdateFrame(r *bytes.Reader, version protocol.VersionNumber) (*WindowUpdateFrame, error) {
frame := &WindowUpdateFrame{}
// read the TypeByte
if _, err := r.ReadByte(); err != nil {
return nil, err
}
sid, err := utils.GetByteOrder(version).ReadUint32(r)
if err != nil {
return nil, err
}
frame.StreamID = protocol.StreamID(sid)
byteOffset, err := utils.GetByteOrder(version).ReadUint64(r)
if err != nil {
return nil, err
}
frame.ByteOffset = protocol.ByteCount(byteOffset)
return frame, nil
}