Add network type to destination to be ready for UDP connection

common/net/destination.go

@@ -0,0 +1,46 @@
+package net
+
+import (
+	"github.com/v2ray/v2ray-core/common/log"
+)
+
+const (
+	NetTCP = byte(0x01)
+	NetUDP = byte(0x02)
+)
+
+type Destination struct {
+	network byte
+	address Address
+}
+
+func NewDestination(network byte, address Address) *Destination {
+	return &Destination{
+		network: network,
+		address: address,
+	}
+}
+
+func (dest *Destination) Network() string {
+	switch dest.network {
+	case NetTCP:
+		return "tcp"
+	case NetUDP:
+		return "udp"
+	default:
+		log.Warning("Unknown network %d", dest.network)
+		return "tcp"
+	}
+}
+
+func (dest *Destination) NetworkByte() byte {
+	return dest.network
+}
+
+func (dest *Destination) Address() Address {
+	return dest.address
+}
+
+func (dest *Destination) String() string {
+	return dest.address.String() + " (" + dest.Network() + ")"
+}