return value straight from errChan

cmd/q3rcon-proxy/main.go

@@ -34,7 +34,7 @@ func main() {
 			},
 			&cli.StringFlag{
 				Name:    "target-host",
-				Value:   "127.0.0.1",
+				Value:   "localhost",
 				Usage:   "Target host address",
 				Sources: cli.EnvVars("Q3RCON_TARGET_HOST"),
 			},
@@ -100,26 +100,19 @@ func main() {
 				go launchProxy(cfg, errChan)
 			}
 
-			// Under normal circumstances, the main goroutine will block here
+			// Under normal circumstances, the main goroutine will block here.
-			// until the server is stopped or an error occurs.
+			// If we receive an error we will log it and exit
-			for err := range errChan {
+			return <-errChan
-				if err != nil {
-					return err
-				}
-			}
-			return nil
 		},
 	}
 
-	if err := cmd.Run(context.Background(), os.Args); err != nil {
+	log.Fatal(cmd.Run(context.Background(), os.Args))
-		log.Fatal(err)
-	}
 }
 
 // launchProxy initializes the UDP proxy server with the given configuration.
 // It listens on the specified proxy host and port, and forwards traffic to the target host and port.
 // server.ListenAndServe blocks until the server is stopped or an error occurs.
-func launchProxy(cfg proxyConfig, errChan chan error) {
+func launchProxy(cfg proxyConfig, errChan chan<- error) {
 	proxyPort, targetPort := cfg.portsMapping[0], cfg.portsMapping[1]
 
 	hostAddr := fmt.Sprintf("%s:%s", cfg.proxyHost, proxyPort)