Direct proxy works

conntypes/dc.go

@@ -0,0 +1,5 @@
+package conntypes
+
+type DC int16
+
+const DCDefaultIdx DC = 1

conntypes/protocol.go

@@ -0,0 +1,19 @@
+package conntypes
+
+type ConnectionProtocol uint8
+
+func (c ConnectionProtocol) String() string {
+	switch c {
+	case ConnectionProtocolAny:
+		return "any"
+	case ConnectionProtocolIPv4:
+		return "ipv4"
+	}
+	return "ipv6"
+}
+
+const (
+	ConnectionProtocolIPv4 ConnectionProtocol = 1
+	ConnectionProtocolIPv6                    = ConnectionProtocolIPv4 << 1
+	ConnectionProtocolAny                     = ConnectionProtocolIPv4 | ConnectionProtocolIPv6
+)

conntypes/type.go

@@ -0,0 +1,27 @@
+package conntypes
+
+type ConnectionType uint8
+
+const (
+	ConnectionTypeUnknown ConnectionType = iota
+	ConnectionTypeAbridged
+	ConnectionTypeIntermediate
+	ConnectionTypeSecure
+)
+
+var (
+	ConnectionTagAbridged     = []byte{0xef, 0xef, 0xef, 0xef}
+	ConnectionTagIntermediate = []byte{0xee, 0xee, 0xee, 0xee}
+	ConnectionTagSecure       = []byte{0xdd, 0xdd, 0xdd, 0xdd}
+)
+
+func (t ConnectionType) Tag() []byte {
+	switch t {
+	case ConnectionTypeAbridged:
+		return ConnectionTagAbridged
+	case ConnectionTypeIntermediate:
+		return ConnectionTagIntermediate
+	default:
+		return ConnectionTagSecure
+	}
+}