Make sure that remote-dev mode listens on all interfaces instead of localhost

Fixes: #13638

Author: geoand

core/runtime/src/main/java/io/quarkus/runtime/LaunchMode.java

@@ -22,6 +22,10 @@ public boolean isDevOrTest() {
         return this != NORMAL;
     }
 
+    public boolean isRemoteDev() {
+        return (current() == DEVELOPMENT) && "true".equals(System.getenv("QUARKUS_LAUNCH_DEVMODE"));
+    }
+
     private final String defaultProfile;
 
     LaunchMode(String defaultProfile) {

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

@@ -17,6 +17,7 @@
 public class HttpHostConfigSource implements ConfigSource, Serializable {
 
     public static final String QUARKUS_HTTP_HOST = "quarkus.http.host";
+    private static final String ALL_INTERFACES = "0.0.0.0";
 
     private final int priority;
 
@@ -37,7 +38,11 @@ public int getOrdinal() {
     @Override
     public String getValue(String propertyName) {
         if (propertyName.equals(QUARKUS_HTTP_HOST)) {
-            return LaunchMode.current().isDevOrTest() ? "localhost" : "0.0.0.0";
+            if (LaunchMode.current().isRemoteDev()) {
+                // in remote-dev mode we need to listen on all interfaces
+                return ALL_INTERFACES;
+            }
+            return LaunchMode.current().isDevOrTest() ? "localhost" : ALL_INTERFACES;
         }
         return null;
     }