sing-box/common/sniff/sniff.go
2022-07-06 12:39:44 +08:00

37 lines
882 B
Go

package sniff
import (
"context"
"io"
"os"
"github.com/sagernet/sing-box/adapter"
)
type (
StreamSniffer = func(ctx context.Context, reader io.Reader) (*adapter.InboundContext, error)
PacketSniffer = func(ctx context.Context, packet []byte) (*adapter.InboundContext, error)
)
func PeekStream(ctx context.Context, reader io.Reader, sniffers ...StreamSniffer) (*adapter.InboundContext, error) {
for _, sniffer := range sniffers {
sniffMetadata, err := sniffer(ctx, reader)
if err != nil {
return nil, err
}
return sniffMetadata, nil
}
return nil, os.ErrInvalid
}
func PeekPacket(ctx context.Context, packet []byte, sniffers ...PacketSniffer) (*adapter.InboundContext, error) {
for _, sniffer := range sniffers {
sniffMetadata, err := sniffer(ctx, packet)
if err != nil {
return nil, err
}
return sniffMetadata, nil
}
return nil, os.ErrInvalid
}