Chore: update tproxy udp packet read logic

transport/socks5/socks5.go

@@ -398,6 +398,21 @@ func ParseAddrToSocksAddr(addr net.Addr) Addr {
 	return parsed
 }
 
+func AddrFromStdAddrPort(addrPort netip.AddrPort) Addr {
+	addr := addrPort.Addr()
+	if addr.Is4() {
+		ip4 := addr.As4()
+		return []byte{AtypIPv4, ip4[0], ip4[1], ip4[2], ip4[3], byte(addrPort.Port() >> 8), byte(addrPort.Port())}
+	}
+
+	buf := make([]byte, 1+net.IPv6len+2)
+	buf[0] = AtypIPv6
+	copy(buf[1:], addr.AsSlice())
+	buf[1+net.IPv6len] = byte(addrPort.Port() >> 8)
+	buf[1+net.IPv6len+1] = byte(addrPort.Port())
+	return buf
+}
+
 // DecodeUDPPacket split `packet` to addr payload, and this function is mutable with `packet`
 func DecodeUDPPacket(packet []byte) (addr Addr, payload []byte, err error) {
 	if len(packet) < 5 {