feat: introduce a new robust approach to handle tproxy udp. (#389)

listener/shadowsocks/utils.go

@@ -7,6 +7,7 @@ import (
 	"net/url"
 
 	"github.com/Dreamacro/clash/common/pool"
+	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/transport/socks5"
 )
 
@@ -44,6 +45,13 @@ func (c *packet) InAddr() net.Addr {
 	return c.pc.LocalAddr()
 }
 
+func (c *packet) SetNatTable(natTable C.NatTable) {
+	// no need
+}
+
+func (c *packet) SetUdpInChan(in chan<- C.PacketAdapter) {
+	// no need
+}
 func ParseSSURL(s string) (addr, cipher, password string, err error) {
 	u, err := url.Parse(s)
 	if err != nil {