mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-09-14 07:58:16 -04:00
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package wire
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import (
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"bytes"
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"fmt"
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"v2ray.com/core/external/github.com/lucas-clemente/quic-go/internal/protocol"
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"v2ray.com/core/external/github.com/lucas-clemente/quic-go/internal/qerr"
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)
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// ParseNextFrame parses the next frame
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// It skips PADDING frames.
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func ParseNextFrame(r *bytes.Reader, v protocol.VersionNumber) (Frame, error) {
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for r.Len() != 0 {
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typeByte, _ := r.ReadByte()
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if typeByte == 0x0 { // PADDING frame
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continue
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}
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r.UnreadByte()
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return parseFrame(r, typeByte, v)
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}
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return nil, nil
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}
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func parseFrame(r *bytes.Reader, typeByte byte, v protocol.VersionNumber) (Frame, error) {
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var frame Frame
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var err error
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if typeByte&0xf8 == 0x8 {
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frame, err = parseStreamFrame(r, v)
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if err != nil {
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return nil, qerr.Error(qerr.InvalidFrameData, err.Error())
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}
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return frame, nil
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}
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switch typeByte {
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case 0x1:
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frame, err = parsePingFrame(r, v)
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case 0x2, 0x3:
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frame, err = parseAckFrame(r, v)
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case 0x4:
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frame, err = parseResetStreamFrame(r, v)
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case 0x5:
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frame, err = parseStopSendingFrame(r, v)
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case 0x6:
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frame, err = parseCryptoFrame(r, v)
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case 0x7:
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frame, err = parseNewTokenFrame(r, v)
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case 0x10:
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frame, err = parseMaxDataFrame(r, v)
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case 0x11:
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frame, err = parseMaxStreamDataFrame(r, v)
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case 0x12, 0x13:
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frame, err = parseMaxStreamsFrame(r, v)
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case 0x14:
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frame, err = parseDataBlockedFrame(r, v)
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case 0x15:
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frame, err = parseStreamDataBlockedFrame(r, v)
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case 0x16, 0x17:
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frame, err = parseStreamsBlockedFrame(r, v)
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case 0x18:
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frame, err = parseNewConnectionIDFrame(r, v)
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case 0x19:
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frame, err = parseRetireConnectionIDFrame(r, v)
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case 0x1a:
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frame, err = parsePathChallengeFrame(r, v)
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case 0x1b:
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frame, err = parsePathResponseFrame(r, v)
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case 0x1c, 0x1d:
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frame, err = parseConnectionCloseFrame(r, v)
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default:
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err = fmt.Errorf("unknown type byte 0x%x", typeByte)
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}
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if err != nil {
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return nil, qerr.Error(qerr.InvalidFrameData, err.Error())
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}
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return frame, nil
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}
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