Transport: Add RAW as an alias of TCP (#3852)

infra/conf/transport_internet.go

@@ -644,7 +644,7 @@ type TransportProtocol string
 // Build implements Buildable.
 func (p TransportProtocol) Build() (string, error) {
 	switch strings.ToLower(string(p)) {
-	case "tcp":
+	case "raw", "tcp":
 		return "tcp", nil
 	case "kcp", "mkcp":
 		return "mkcp", nil
@@ -783,6 +783,7 @@ type StreamConfig struct {
 	Security            string             `json:"security"`
 	TLSSettings         *TLSConfig         `json:"tlsSettings"`
 	REALITYSettings     *REALITYConfig     `json:"realitySettings"`
+	RAWSettings         *TCPConfig         `json:"rawSettings"`
 	TCPSettings         *TCPConfig         `json:"tcpSettings"`
 	KCPSettings         *KCPConfig         `json:"kcpSettings"`
 	WSSettings          *WebSocketConfig   `json:"wsSettings"`
@@ -839,10 +840,13 @@ func (c *StreamConfig) Build() (*internet.StreamConfig, error) {
 	default:
 		return nil, errors.New(`Unknown security "` + c.Security + `".`)
 	}
+	if c.TCPSettings == nil {
+		c.TCPSettings = c.RAWSettings
+	}
 	if c.TCPSettings != nil {
 		ts, err := c.TCPSettings.Build()
 		if err != nil {
-			return nil, errors.New("Failed to build TCP config.").Base(err)
+			return nil, errors.New("Failed to build RAW config.").Base(err)
 		}
 		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
 			ProtocolName: "tcp",