fix: 2.9 ipv4|ipv6|auto

cmd/server/main.go

@@ -136,6 +136,7 @@ type ServerConfig struct {
 	Logging              LoggingConfig `mapstructure:"logging"`
 	GlobalExtensions     []string      `mapstructure:"globalextensions"`
 	FileNaming           string        `mapstructure:"filenaming"`
+	ForceProtocol        string        `mapstructure:"forceprotocol"` // NEW field
 	// Removed TempPath, LoggingJSON
 }
 
@@ -381,16 +382,41 @@ func createAndMountISO(size, mountpoint, charset string) error {
 	return nil
 }
 
-var dialer = &net.Dialer{
-	DualStack: true,
-	Timeout:   5 * time.Second,
+func initializeNetworkProtocol(forceProtocol string) (*net.Dialer, error) {
+	switch forceProtocol {
+	case "ipv4":
+		return &net.Dialer{
+			Timeout:   5 * time.Second,
+			DualStack: false,
+			Control: func(network, address string, c syscall.RawConn) error {
+				if network == "tcp6" {
+					return fmt.Errorf("IPv6 is disabled by forceprotocol setting")
+				}
+				return nil
+			},
+		}, nil
+	case "ipv6":
+		return &net.Dialer{
+			Timeout:   5 * time.Second,
+			DualStack: false,
+			Control: func(network, address string, c syscall.RawConn) error {
+				if network == "tcp4" {
+					return fmt.Errorf("IPv4 is disabled by forceprotocol setting")
+				}
+				return nil
+			},
+		}, nil
+	case "auto":
+		return &net.Dialer{
+			Timeout:   5 * time.Second,
+			DualStack: true,
+		}, nil
+	default:
+		return nil, fmt.Errorf("invalid forceprotocol value: %s", forceProtocol)
+	}
 }
 
-var dualStackClient = &http.Client{
-	Transport: &http.Transport{
-		DialContext: dialer.DialContext,
-	},
-}
+var dualStackClient *http.Client
 
 func main() {
 	setDefaults()
@@ -469,8 +495,9 @@ func main() {
 	log.Infof("Server PreCaching: %v", conf.Server.PreCaching)
 	log.Infof("Server FileTTLEnabled: %v", conf.Server.FileTTLEnabled)
 	log.Infof("Server DeduplicationEnabled: %v", conf.Server.DeduplicationEnabled)
-	log.Infof("Server BindIP: %s", conf.Server.BindIP)         // Hinzugefügt: Logging für BindIP
-	log.Infof("Server FileNaming: %s", conf.Server.FileNaming) // Added: Logging for FileNaming
+	log.Infof("Server BindIP: %s", conf.Server.BindIP)               // Hinzugefügt: Logging für BindIP
+	log.Infof("Server FileNaming: %s", conf.Server.FileNaming)       // Added: Logging for FileNaming
+	log.Infof("Server ForceProtocol: %s", conf.Server.ForceProtocol) // Added: Logging for ForceProtocol
 
 	err = writePIDFile(conf.Server.PIDFilePath) // Write PID file after config is loaded
 	if err != nil {
@@ -590,6 +617,17 @@ func main() {
 		log.Fatalf("Invalid IdleTimeout: %v", err)
 	}
 
+	// Initialize network protocol based on forceprotocol setting
+	dialer, err := initializeNetworkProtocol(conf.Server.ForceProtocol)
+	if err != nil {
+		log.Fatalf("Failed to initialize network protocol: %v", err)
+	}
+	dualStackClient = &http.Client{
+		Transport: &http.Transport{
+			DialContext: dialer.DialContext,
+		},
+	}
+
 	server := &http.Server{
 		Addr:           conf.Server.BindIP + ":" + conf.Server.ListenPort, // Geändert: Nutzung von BindIP
 		Handler:        router,
@@ -668,6 +706,7 @@ deduplicationenabled = true
 globalextensions = [".txt", ".pdf", ".png", ".jpg", ".jpeg", ".gif", ".bmp", ".tiff", ".svg", ".webp"]
 # FileNaming options: "HMAC", "None"
 filenaming = "HMAC"
+forceprotocol = "auto"
 
 [logging]
 level = "info"
@@ -733,7 +772,7 @@ uploadqueuesize = 50
 # Add file-specific configurations here
 
 [build]
-version = "2.7-Stable"
+version = "2.9-Stable"
 `)
 }
 
@@ -827,6 +866,7 @@ func setDefaults() {
 	viper.SetDefault("server.loggingjson", false)
 	viper.SetDefault("server.filettlenabled", true)
 	viper.SetDefault("server.deduplicationenabled", true)
+	viper.SetDefault("server.forceprotocol", "auto")
 
 	viper.SetDefault("timeouts.readtimeout", "4800s")
 	viper.SetDefault("timeouts.writetimeout", "4800s")
@@ -1181,6 +1221,9 @@ func logSystemInfo() {
 	log.Infof("Platform Family: %s", hInfo.PlatformFamily)
 	log.Infof("Platform Version: %s", hInfo.PlatformVersion)
 	log.Infof("Kernel Version: %s", hInfo.KernelVersion)
+
+	// Log the forceprotocol configuration
+	log.Infof("Force Protocol: %s", conf.Server.ForceProtocol)
 }
 
 func initMetrics() {

config.toml

@@ -1,5 +1,19 @@
-[server]
-// ...existing code...
-# FileNaming options: "HMAC", "None"
-FileNaming = "HMAC"
-// ...existing code...
+# Server configuration
+listenport = "8080"  # TCP port for incoming requests
+unixsocket = false   # Use Unix domain socket instead of TCP
+storagepath = "/path/to/hmac-file-server/data/"  # Directory to store uploaded files
+loglevel = "debug"   # Logging level: "debug", "info", "warn", "error"
+logfile = "/path/to/hmac-file-server.log"  # Path to log file; leave empty to use stdout
+metricsenabled = true   # Enable Prometheus metrics
+metricsport = "9090"    # Port for Prometheus metrics
+deduplicationenabled = true
+minfreebytes = "5GB"     # Minimum free disk space required
+filettl = "2Y"           # Time-to-live for files
+filettlenabled = false   # Enable TTL checks and cleanup
+autoadjustworkers = true # Automatically adjust worker threads based on load
+networkevents = false    # Enable detailed network event logging
+pidfilepath = "./hmac-file-server.pid" # Path to PID file
+precaching = true        # Pre-cache file structures on startup
+
+# New option to force network protocol
+forceprotocol = "auto"  # Options: "ipv4", "ipv6", "auto"

wiki.md

@@ -62,6 +62,9 @@ autoadjustworkers = true # Automatically adjust worker threads based on load
 networkevents = false    # Enable detailed network event logging
 pidfilepath = "./hmac-file-server.pid" # Path to PID file
 precaching = true        # Pre-cache file structures on startup
+
+# New option to force network protocol
+forceprotocol = "auto"  # Options: "ipv4", "ipv6", "auto"
 ```
 
 #### Configuration Options
@@ -143,6 +146,14 @@ precaching = true        # Pre-cache file structures on startup
   - *Description*: Enables pre-caching of file structures on startup to improve access speed and performance.  
   - *Default*: `true`
 
+- **forceprotocol**:  
+  - *Type*: `String`  
+  - *Description*: Specifies the network protocol to use for server communication.  
+    - `"ipv4"`: Forces the server to use IPv4.  
+    - `"ipv6"`: Forces the server to use IPv6.  
+    - `"auto"`: Uses the system's default behavior (dual-stack).  
+  - *Default*: `"auto"`
+
 ---
 
 ### Deduplication Settings
@@ -495,6 +506,7 @@ autoadjustworkers = true
 networkevents = false
 pidfilepath = "./hmac-file-server.pid"
 precaching = true
+forceprotocol = "auto"
 
 # Deduplication settings
 [deduplication]