Minor adjustments to WSL Dev mode fix

The previous commit was actually changing the logic for the default
case.

extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/VertxConfigBuilder.java

@@ -6,19 +6,31 @@
 
 public class VertxConfigBuilder implements ConfigBuilder {
     private static final String QUARKUS_HTTP_HOST = "quarkus.http.host";
+
+    private static final String LOCALHOST = "localhost";
     private static final String ALL_INTERFACES = "0.0.0.0";
 
     @Override
     public SmallRyeConfigBuilder configBuilder(final SmallRyeConfigBuilder builder) {
         // It may have been recorded, so only set if it not available in the defaults
         if (builder.getDefaultValues().get(QUARKUS_HTTP_HOST) == null) {
             // Sets the default host config value, depending on the launch mode
-            if (LaunchMode.isRemoteDev() || (LaunchMode.current().isDevOrTest() && isWSL())) {
-                // we need to listen on all interfaces otherwise the application would not be accessible
+            if (LaunchMode.isRemoteDev()) {
+                // in remote dev mode, we want to listen on all interfaces
+                // to make sure the application is accessible
                 builder.withDefaultValue(QUARKUS_HTTP_HOST, ALL_INTERFACES);
+            } else if (LaunchMode.current().isDevOrTest()) {
+                if (!isWSL()) {
+                    // in dev mode, we want to listen only on localhost
+                    // to make sure the app is not accessible from the outside
+                    builder.withDefaultValue(QUARKUS_HTTP_HOST, LOCALHOST);
+                } else {
+                    // except when using WSL, as otherwise the app wouldn't be accessible from the host
+                    builder.withDefaultValue(QUARKUS_HTTP_HOST, ALL_INTERFACES);
+                }
             } else {
-                // Otherwise, we want to only listen on localhost so others on the network cannot connect to the application.
-                builder.withDefaultValue(QUARKUS_HTTP_HOST, "localhost");
+                // in all the other cases, we make sure the app is accessible on all the interfaces by default
+                builder.withDefaultValue(QUARKUS_HTTP_HOST, ALL_INTERFACES);
             }
         }
         return builder;

extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/VertxHttpRecorder.java

@@ -947,7 +947,7 @@ private static void setHttpServerTiming(boolean httpDisabled, HttpServerOptions
      * Do not use this during the actual configuration, use options.getHost() there directly instead.
      */
     private static String getDeveloperFriendlyHostName(HttpServerOptions options) {
-        return (isWSL() && LaunchMode.current().isDevOrTest() && options.getHost().equals("0.0.0.0")) ? "localhost"
+        return (LaunchMode.current().isDevOrTest() && "0.0.0.0".equals(options.getHost()) && isWSL()) ? "localhost"
                 : options.getHost();
     }