refactor(config): improve config file handling and error messages

- Replace manual address formatting with net.JoinHostPort in tcpClient
- Simplify debug/error messages in IsInstanceRunning by removing redundant output
- Fix incorrect map reference for RunUser in CreateInstanceHandler
- Extract config file creation logic into handleConfigFileCreate
- Add auth_token to response data in GetInstanceInfoHandler
- Remove redundant AuthToken field from InstanceInfo struct

config.go

@@ -27,7 +27,6 @@ type InstanceInfo struct {
 	ServerAddr string                 `json:"serverAddr"`
 	ServerPort string                 `json:"serverPort"`
 	AuthMethod string                 `json:"auth_method"`
-	AuthToken  string                 `json:"auth_token"`
 	RunUser    string                 `json:"runUser"`
 	Additional map[string]interface{} `json:"additionalProperties"`
 }
@@ -231,26 +230,64 @@ func encodeFrpcConfig(config FrpcConfig) (string, error) {
 	return strings.TrimSuffix(buf.String(), "\n"), nil
 }
 
-func generateFrpcConfig(info InstanceInfo) string {
+func handleConfigFileCreate(configPath string, info InstanceInfo) error {
 	config := FrpcConfig{
 		Global: make(map[string]interface{}),
 	}
 
-	config.Global["serverAddr"] = info.ServerAddr
-	config.Global["serverPort"] = info.ServerPort
-	config.Global["auth.method"] = info.AuthMethod
-	config.Global["auth.token"] = info.AuthToken
-
-	for key, value := range info.Additional {
-		config.Global[key] = value
-	}
-
 	result, err := encodeFrpcConfig(config)
 	if err != nil {
-		return ""
+		return fmt.Errorf("failed to encode empty config: %w", err)
 	}
 
-	return result
+	if err := os.WriteFile(configPath, []byte(result), 0644); err != nil {
+		return fmt.Errorf("failed to create config file: %w", err)
+	}
+
+	configData := make(map[string]interface{})
+	configData["serverAddr"] = info.ServerAddr
+	configData["serverPort"] = info.ServerPort
+	configData["auth.method"] = info.AuthMethod
+
+	if authToken, ok := info.Additional["auth_token"]; ok {
+		configData["auth.token"] = authToken
+	}
+
+	for key, value := range info.Additional {
+		if key == "auth_token" || key == "auth_method" {
+			continue
+		}
+		configData[key] = value
+	}
+
+	for key, value := range configData {
+		var configValue string
+		if key == "serverPort" {
+			switch v := value.(type) {
+			case float64:
+				configValue = strconv.Itoa(int(v))
+			case int:
+				configValue = strconv.Itoa(v)
+			case string:
+				var intVal int
+				if _, err := fmt.Sscanf(v, "%d", &intVal); err == nil {
+					configValue = strconv.Itoa(intVal)
+				} else {
+					configValue = v
+				}
+			default:
+				configValue = fmt.Sprintf("%v", value)
+			}
+		} else {
+			configValue = fmt.Sprintf("%v", value)
+		}
+
+		if err := setKeyText(configPath, key, "", configValue); err != nil {
+			return fmt.Errorf("failed to set key %s: %w", key, err)
+		}
+	}
+
+	return nil
 }
 
 func addFrpcProxy(configContent string, info FrpcProxyInfo) (string, error) {

frpAct.go

@@ -69,7 +69,7 @@ func CreateInstanceHandler(w http.ResponseWriter, r *http.Request) {
 		ServerAddr: getStringFromMap(instanceInfoMap, "serverAddr"),
 		ServerPort: getStringFromMap(instanceInfoMap, "serverPort"),
 		AuthMethod: getStringFromMap(instanceInfoMap, "auth_method"),
-		RunUser:    getStringFromMap(reqMap, "runUser"),
+		RunUser:    getStringFromMap(instanceInfoMap, "runUser"),
 	}
 
 	if additional, ok := reqMap["additionalProperties"].(map[string]interface{}); ok {
@@ -111,8 +111,7 @@ func CreateInstanceHandler(w http.ResponseWriter, r *http.Request) {
 	configFileName := fmt.Sprintf("superfrpc_%s_%s.toml", user.Username, req.InstanceInfo.Name)
 	configPath := filepath.Join(configDir, configFileName)
 
-	configContent := generateFrpcConfig(req.InstanceInfo)
+	if err := handleConfigFileCreate(configPath, req.InstanceInfo); err != nil {
-	if err := os.WriteFile(configPath, []byte(configContent), 0644); err != nil {
 		postLog.Error(fmt.Sprintf("[CreateInstanceHandler] Failed to create config file %s: %v", configPath, err))
 		SendErrorResponse(w, http.StatusInternalServerError, "Failed to create config file")
 		return
@@ -1002,6 +1001,9 @@ func GetInstanceInfoHandler(w http.ResponseWriter, r *http.Request) {
 			if authMethod, ok := config.Global["auth.method"]; ok {
 				responseData["auth_method"] = authMethod
 			}
+			if authToken, ok := config.Global["auth.token"]; ok {
+				responseData["auth_token"] = authToken
+			}
 
 			if userType == "admin" || userType == "superuser" {
 				if serverAddr, ok := config.Global["serverAddr"]; ok {

os.go

@@ -445,15 +445,15 @@ func IsInstanceRunning(instanceID int) error {
 					return fmt.Errorf("service %s is not running", serviceName)
 				}
 				if exitCode == 3 {
-					postLog.Debug(fmt.Sprintf("[IsInstanceRunning] Systemd service %s is not running: %s, output: %s", serviceName, outputStr))
+					postLog.Debug(fmt.Sprintf("[IsInstanceRunning] Systemd service %s is not running: %s", serviceName, outputStr))
 					return fmt.Errorf("service %s is not running", serviceName)
 				}
 				if exitCode == 4 {
-					postLog.Debug(fmt.Sprintf("[IsInstanceRunning] Systemd service %s does not exist: %s, output: %s", serviceName, outputStr))
+					postLog.Debug(fmt.Sprintf("[IsInstanceRunning] Systemd service %s does not exist: %s", serviceName, outputStr))
 					return fmt.Errorf("service %s does not exist", serviceName)
 				}
 			}
-			postLog.Error(fmt.Sprintf("[IsInstanceRunning] Failed to check systemd service status: %s, output: %s", err, outputStr))
+			postLog.Error(fmt.Sprintf("[IsInstanceRunning] Failed to check systemd service status: %s", err))
 			return err
 		}
 

watchdog/tcpClient.go

@@ -42,7 +42,7 @@ func tcpConnect(ipaddr string, port int) error {
 		return fmt.Errorf("already connected")
 	}
 
-	address := fmt.Sprintf("%s:%d", ipaddr, port)
+	address := net.JoinHostPort(ipaddr, fmt.Sprintf("%d", port))
 	conn, err := net.DialTimeout("tcp", address, 3*time.Second)
 	if err != nil {
 		return fmt.Errorf("failed to connect to %s: %v", address, err)