Pass listen address as a -listen argument. Use the new code to parse a parameter.

cmd/dwelling-upload/main.go

@@ -9,12 +9,15 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"net/netip"
 	"os"
 	"os/signal"
+	"strings"
 	"syscall"
 )
 
 var configPath *string = flag.String("conf", "config.yaml", "path to configuration file")
+var listenAddress *string = flag.String("listen", "/var/run/dwelling-upload/sock", "listen address (ip:port|unix_path)")
 var showVersion *bool = flag.Bool("v", false, "show version")
 
 var version string
@@ -32,11 +35,24 @@ func main() {
 		log.Fatalln(err)
 	}
 
-	defer func() {
+	var network string
-		if typ, addr := config.SplitNetworkAddress(); typ == "unix" {
+	if !strings.ContainsRune(*listenAddress, ':') {
-			os.Remove(addr)
+		network = "unix"
+		defer os.Remove(*listenAddress)
+	} else {
+		ap, err := netip.ParseAddrPort(*listenAddress)
+		if err != nil {
+			log.Fatalln(err)
+		} else if !ap.IsValid() {
+			log.Fatalln(*listenAddress, "is not valid")
 		}
-	}()
+
+		if ap.Addr().Is4() {
+			network = "tcp4"
+		} else if ap.Addr().Is6() {
+			network = "tcp6"
+		}
+	}
 
 	logErr, err := logging.New(config.Log.Error)
 	if err != nil {
@@ -83,7 +99,7 @@ func main() {
 	srv.GET("/f/:hash/:name", hand.Download)
 	srv.DELETE("/:hash", hand.Delete)
 
-	if err := srv.Start(config.SplitNetworkAddress()); err != nil {
+	if err := srv.Start(network, *listenAddress); err != nil {
 		logErr.Fatalln("failed to start a server:", err)
 	}