#12330 make sure the delegate callback has been failed before SendCallback's iteration returns

Signed-off-by: Ludovic Orban <lorban@bitronix.be>

jetty-core/jetty-io/src/main/java/org/eclipse/jetty/io/AbstractConnection.java

@@ -17,7 +17,6 @@ import java.util.EventListener;
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.Executor;
-import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.TimeoutException;
 
 import org.eclipse.jetty.util.Callback;
@@ -90,47 +89,6 @@ public abstract class AbstractConnection implements Connection, Invocable
         return _executor;
     }
 
-    protected void failedCallback(final Callback callback, final Throwable x)
-    {
-        Runnable failCallback = () ->
-        {
-            try
-            {
-                callback.failed(x);
-            }
-            catch (Exception e)
-            {
-                LOG.warn("Failed callback", x);
-            }
-        };
-
-        switch (Invocable.getInvocationType(callback))
-        {
-            case BLOCKING:
-                try
-                {
-                    getExecutor().execute(failCallback);
-                }
-                catch (RejectedExecutionException e)
-                {
-                    LOG.debug("Rejected", e);
-                    callback.failed(x);
-                }
-                break;
-
-            case NON_BLOCKING:
-                failCallback.run();
-                break;
-
-            case EITHER:
-                Invocable.invokeNonBlocking(failCallback);
-                break;
-
-            default:
-                throw new IllegalStateException();
-        }
-    }
-
     /**
      * <p>Utility method to be called to register read interest.</p>
      * <p>After a call to this method, {@link #onFillable()} or {@link #onFillInterestedFailed(Throwable)}

jetty-core/jetty-server/src/main/java/org/eclipse/jetty/server/internal/HttpConnection.java

@@ -931,7 +931,7 @@ public class HttpConnection extends AbstractMetaDataConnection implements Runnab
         public void onFailure(final Throwable x)
         {
             Callback callback = resetCallback();
-            failedCallback(callback, x);
+            callback.failed(x);
         }
 
         @Override