fix flaky test ClientCloseTest.testWriteException

Signed-off-by: Lachlan Roberts <lachlan@webtide.com>

jetty-websocket/jetty-websocket-tests/src/test/java/org/eclipse/jetty/websocket/tests/client/ClientCloseTest.java

@@ -19,11 +19,11 @@
 package org.eclipse.jetty.websocket.tests.client;
 
 
-import java.io.IOException;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
@@ -36,6 +36,7 @@ import org.eclipse.jetty.server.handler.DefaultHandler;
 import org.eclipse.jetty.server.handler.HandlerList;
 import org.eclipse.jetty.servlet.ServletContextHandler;
 import org.eclipse.jetty.servlet.ServletHolder;
+import org.eclipse.jetty.util.BlockingArrayQueue;
 import org.eclipse.jetty.util.log.Log;
 import org.eclipse.jetty.util.log.Logger;
 import org.eclipse.jetty.websocket.api.CloseException;
@@ -66,11 +67,13 @@ import static org.hamcrest.Matchers.instanceOf;
 import static org.hamcrest.Matchers.is;
 import static org.hamcrest.Matchers.nullValue;
 import static org.junit.jupiter.api.Assertions.assertTimeoutPreemptively;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class ClientCloseTest
 {
     private Server server;
     private WebSocketClient client;
+    private BlockingArrayQueue<ServerEndpoint> serverEndpoints = new BlockingArrayQueue<>();
 
     private Session confirmConnection(CloseTrackingEndpoint clientSocket, Future<Session> clientFuture) throws Exception
     {
@@ -128,7 +131,12 @@ public class ClientCloseTest
             {
                 factory.getPolicy().setIdleTimeout(10000);
                 factory.getPolicy().setMaxTextMessageSize(1024 * 1024 * 2);
-                factory.register(ServerEndpoint.class);
+                factory.setCreator((req,resp)->
+                {
+                    ServerEndpoint endpoint = new ServerEndpoint();
+                    serverEndpoints.offer(endpoint);
+                    return endpoint;
+                });
             }
         });
         context.addServlet(holder, "/ws");
@@ -353,6 +361,11 @@ public class ClientCloseTest
         // client confirms connection via echo
         confirmConnection(clientSocket, clientConnectFuture);
 
+        try
+        {
+            // Block on the server so that the server does not detect a read failure
+            clientSocket.getSession().getRemote().sendString("block");
+
             // setup client endpoint for write failure (test only)
             EndPoint endp = clientSocket.getEndPoint();
             endp.shutdownOutput();
@@ -366,16 +379,24 @@ public class ClientCloseTest
             assertThat("OnError", clientSocket.error.get(), instanceOf(EofException.class));
 
             // client triggers close event on client ws-endpoint
-        // assert - close code==1006 (abnormal) or code==1001 (shutdown)
+            // assert - close code==1006 (abnormal)
-        clientSocket.assertReceivedCloseEvent(timeout, anyOf(is(StatusCode.SHUTDOWN), is(StatusCode.ABNORMAL)));
+            clientSocket.assertReceivedCloseEvent(timeout, is(StatusCode.ABNORMAL), null);
-
             clientSessionTracker.assertClosedProperly(client);
+
+            assertThat(serverEndpoints.size(), is(1));
+        }
+        finally
+        {
+            for (ServerEndpoint endpoint : serverEndpoints)
+                endpoint.block.countDown();
+        }
     }
 
     public static class ServerEndpoint implements WebSocketFrameListener, WebSocketListener
     {
         private static final Logger LOG = Log.getLogger(ServerEndpoint.class);
         private Session session;
+        CountDownLatch block = new CountDownLatch(1);
 
         @Override
         public void onWebSocketBinary(byte[] payload, int offset, int len)
@@ -395,15 +416,22 @@ public class ClientCloseTest
                     String bigmsg = new String(buf, UTF_8);
                     session.getRemote().sendString(bigmsg);
                 }
+                else if (message.equals("block"))
+                {
+                    LOG.debug("blocking");
+                    assertTrue(block.await(5, TimeUnit.MINUTES));
+                    LOG.debug("unblocked");
+                }
                 else
                 {
                     // simple echo
                     session.getRemote().sendString(message);
                 }
             }
-            catch (IOException ignore)
+            catch (Throwable t)
             {
-                LOG.debug(ignore);
+                LOG.debug(t);
+                throw new RuntimeException(t);
             }
         }
 
@@ -422,9 +450,7 @@ public class ClientCloseTest
         public void onWebSocketError(Throwable cause)
         {
             if (LOG.isDebugEnabled())
-            {
+                LOG.debug("onWebSocketError(): ", cause);
-                LOG.debug(cause);
-            }
         }
 
         @Override

jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/io/AbstractWebSocketConnection.java

@@ -94,8 +94,8 @@ public abstract class AbstractWebSocketConnection extends AbstractConnection imp
         @Override
         public void onCompleteFailure(Throwable failure)
         {
-            super.onCompleteFailure(failure);
             AbstractWebSocketConnection.this.close(failure);
+            super.onCompleteFailure(failure);
         }
     }