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woodpecker/vendor/github.com/lucas-clemente/quic-go/frames/rst_stream_frame.go

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2017-07-25 01:15:25 +02:00
package frames
import (
"bytes"
"github.com/lucas-clemente/quic-go/internal/utils"
"github.com/lucas-clemente/quic-go/protocol"
)
// A RstStreamFrame in QUIC
type RstStreamFrame struct {
StreamID protocol.StreamID
ErrorCode uint32
ByteOffset protocol.ByteCount
}
//Write writes a RST_STREAM frame
func (f *RstStreamFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error {
b.WriteByte(0x01)
utils.WriteUint32(b, uint32(f.StreamID))
utils.WriteUint64(b, uint64(f.ByteOffset))
utils.WriteUint32(b, f.ErrorCode)
return nil
}
// MinLength of a written frame
func (f *RstStreamFrame) MinLength(version protocol.VersionNumber) (protocol.ByteCount, error) {
return 1 + 4 + 8 + 4, nil
}
// ParseRstStreamFrame parses a RST_STREAM frame
func ParseRstStreamFrame(r *bytes.Reader) (*RstStreamFrame, error) {
frame := &RstStreamFrame{}
// read the TypeByte
_, err := r.ReadByte()
if err != nil {
return nil, err
}
sid, err := utils.ReadUint32(r)
if err != nil {
return nil, err
}
frame.StreamID = protocol.StreamID(sid)
byteOffset, err := utils.ReadUint64(r)
if err != nil {
return nil, err
}
frame.ByteOffset = protocol.ByteCount(byteOffset)
frame.ErrorCode, err = utils.ReadUint32(r)
if err != nil {
return nil, err
}
return frame, nil
}