Add route support

network_name.go

@@ -0,0 +1,41 @@
+package tun
+
+import (
+	"strconv"
+
+	"github.com/sagernet/sing-tun/internal/clashtcpip"
+	F "github.com/sagernet/sing/common/format"
+	N "github.com/sagernet/sing/common/network"
+)
+
+func NetworkName(network uint8) string {
+	switch network {
+	case clashtcpip.TCP:
+		return N.NetworkTCP
+	case clashtcpip.UDP:
+		return N.NetworkUDP
+	case clashtcpip.ICMP:
+		return N.NetworkICMPv4
+	case clashtcpip.ICMPv6:
+		return N.NetworkICMPv6
+	}
+	return F.ToString(network)
+}
+
+func NetworkFromName(name string) uint8 {
+	switch name {
+	case N.NetworkTCP:
+		return clashtcpip.TCP
+	case N.NetworkUDP:
+		return clashtcpip.UDP
+	case N.NetworkICMPv4:
+		return clashtcpip.ICMP
+	case N.NetworkICMPv6:
+		return clashtcpip.ICMPv6
+	}
+	parseNetwork, err := strconv.ParseUint(name, 10, 8)
+	if err != nil {
+		return 0
+	}
+	return uint8(parseNetwork)
+}