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Improve QUIC sniffer

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This commit is contained in:
世界
2024-07-07 15:45:50 +08:00
parent 3a7acaa92a
commit 9dc3bb975a
30 changed files with 1014 additions and 241 deletions
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13
common/sniff/dtls.go
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@@ -8,24 +8,25 @@ import (
C "github.com/sagernet/sing-box/constant"
)
func DTLSRecord(ctx context.Context, packet []byte) (*adapter.InboundContext, error) {
func DTLSRecord(ctx context.Context, metadata *adapter.InboundContext, packet []byte) error {
const fixedHeaderSize = 13
if len(packet) < fixedHeaderSize {
return nil, os.ErrInvalid
return os.ErrInvalid
}
contentType := packet[0]
switch contentType {
case 20, 21, 22, 23, 25:
default:
return nil, os.ErrInvalid
return os.ErrInvalid
}
versionMajor := packet[1]
if versionMajor != 0xfe {
return nil, os.ErrInvalid
return os.ErrInvalid
}
versionMinor := packet[2]
if versionMinor != 0xff && versionMinor != 0xfd {
return nil, os.ErrInvalid
return os.ErrInvalid
}
return &adapter.InboundContext{Protocol: C.ProtocolDTLS}, nil
metadata.Protocol = C.ProtocolDTLS
return nil
}