package outbound import ( "context" "os" "github.com/sagernet/sing/common/uot" "github.com/xtls/xray-core/common/errors" "github.com/xtls/xray-core/common/net" "github.com/xtls/xray-core/transport/internet" "github.com/xtls/xray-core/transport/internet/stat" ) func (h *Handler) getUoTConnection(ctx context.Context, dest net.Destination) (stat.Connection, error) { if dest.Address == nil { return nil, errors.New("nil destination address") } if !dest.Address.Family().IsDomain() { return nil, os.ErrInvalid } var uotVersion int if dest.Address.Domain() == uot.MagicAddress { uotVersion = uot.Version } else if dest.Address.Domain() == uot.LegacyMagicAddress { uotVersion = uot.LegacyVersion } else { return nil, os.ErrInvalid } packetConn, err := internet.ListenSystemPacket(ctx, &net.UDPAddr{IP: net.AnyIP.IP(), Port: 0}, h.streamSettings.SocketSettings) if err != nil { return nil, errors.New("unable to listen socket").Base(err) } conn := uot.NewServerConn(packetConn, uotVersion) return h.getStatCouterConnection(conn), nil }