package outbound import ( "context" "net" "github.com/Dreamacro/clash/component/dialer" "github.com/Dreamacro/clash/component/resolver" C "github.com/Dreamacro/clash/constant" ) type Direct struct { *Base } func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) { address := net.JoinHostPort(metadata.String(), metadata.DstPort) c, err := dialer.DialContext(ctx, "tcp", address) if err != nil { return nil, err } tcpKeepAlive(c) return NewConn(c, d), nil } func (d *Direct) DialUDP(metadata *C.Metadata) (C.PacketConn, error) { pc, err := dialer.ListenPacket("udp", "") if err != nil { return nil, err } return newPacketConn(&directPacketConn{pc}, d), nil } type directPacketConn struct { net.PacketConn } func (dp *directPacketConn) WriteWithMetadata(p []byte, metadata *C.Metadata) (n int, err error) { if !metadata.Resolved() { ip, err := resolver.ResolveIP(metadata.Host) if err != nil { return 0, err } metadata.DstIP = ip } return dp.WriteTo(p, metadata.UDPAddr()) } func NewDirect() *Direct { return &Direct{ Base: &Base{ name: "DIRECT", tp: C.Direct, udp: true, }, } }