forked from quic-go/quic-go
f12ee48617
* wire: add benchmarks for the frame parser * wire: use quicvarint.Parse when parsing frames * wire: always use io.EOF for too short frames
56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
package wire
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import (
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"github.com/quic-go/quic-go/internal/protocol"
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"github.com/quic-go/quic-go/internal/qerr"
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"github.com/quic-go/quic-go/quicvarint"
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)
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// A ResetStreamFrame is a RESET_STREAM frame in QUIC
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type ResetStreamFrame struct {
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StreamID protocol.StreamID
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ErrorCode qerr.StreamErrorCode
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FinalSize protocol.ByteCount
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}
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func parseResetStreamFrame(b []byte, _ protocol.Version) (*ResetStreamFrame, int, error) {
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startLen := len(b)
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var streamID protocol.StreamID
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var byteOffset protocol.ByteCount
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sid, l, err := quicvarint.Parse(b)
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if err != nil {
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return nil, 0, replaceUnexpectedEOF(err)
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}
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b = b[l:]
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streamID = protocol.StreamID(sid)
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errorCode, l, err := quicvarint.Parse(b)
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if err != nil {
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return nil, 0, replaceUnexpectedEOF(err)
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}
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b = b[l:]
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bo, l, err := quicvarint.Parse(b)
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if err != nil {
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return nil, 0, replaceUnexpectedEOF(err)
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}
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byteOffset = protocol.ByteCount(bo)
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return &ResetStreamFrame{
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StreamID: streamID,
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ErrorCode: qerr.StreamErrorCode(errorCode),
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FinalSize: byteOffset,
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}, startLen - len(b) + l, nil
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}
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func (f *ResetStreamFrame) Append(b []byte, _ protocol.Version) ([]byte, error) {
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b = append(b, resetStreamFrameType)
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b = quicvarint.Append(b, uint64(f.StreamID))
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b = quicvarint.Append(b, uint64(f.ErrorCode))
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b = quicvarint.Append(b, uint64(f.FinalSize))
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return b, nil
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}
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// Length of a written frame
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func (f *ResetStreamFrame) Length(protocol.Version) protocol.ByteCount {
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return 1 + protocol.ByteCount(quicvarint.Len(uint64(f.StreamID))+quicvarint.Len(uint64(f.ErrorCode))+quicvarint.Len(uint64(f.FinalSize)))
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}
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