Author: markt
Date: Tue Mar 7 21:56:10 2017
New Revision: 1785893
URL: http://svn.apache.org/viewvc?rev=1785893&view=rev
Log:
Add test case to explore issue reported on users list.
Added:
tomcat/trunk/test/org/apache/tomcat/websocket/server/TestAsyncMessages.java
Added:
tomcat/trunk/test/org/apache/tomcat/websocket/server/TestAsyncMessages.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/test/org/apache/tomcat/websocket/server/TestAsyncMessages.java?rev=1785893&view=auto
==============================================================================
--- tomcat/trunk/test/org/apache/tomcat/websocket/server/TestAsyncMessages.java
(added)
+++ tomcat/trunk/test/org/apache/tomcat/websocket/server/TestAsyncMessages.java
Tue Mar 7 21:56:10 2017
@@ -0,0 +1,137 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.tomcat.websocket.server;
+
+import java.net.URI;
+import java.nio.ByteBuffer;
+import java.util.concurrent.CountDownLatch;
+
+import javax.websocket.ClientEndpointConfig;
+import javax.websocket.ContainerProvider;
+import javax.websocket.MessageHandler;
+import javax.websocket.Session;
+import javax.websocket.WebSocketContainer;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+import org.apache.catalina.Context;
+import org.apache.catalina.servlets.DefaultServlet;
+import org.apache.catalina.startup.Tomcat;
+import org.apache.catalina.startup.TomcatBaseTest;
+import org.apache.tomcat.websocket.TesterAsyncTiming;
+import
org.apache.tomcat.websocket.TesterMessageCountClient.TesterProgrammaticEndpoint;
+
+@Ignore // Test passes but GC delays can introduce false failures.
+public class TestAsyncMessages extends TomcatBaseTest {
+
+ @Test
+ public void testAsyncTiming() throws Exception {
+
+ Tomcat tomcat = getTomcatInstance();
+ // No file system docBase required
+ Context ctx = tomcat.addContext("", null);
+ ctx.addApplicationListener(TesterAsyncTiming.Config.class.getName());
+ Tomcat.addServlet(ctx, "default", new DefaultServlet());
+ ctx.addServletMappingDecoded("/", "default");
+
+ tomcat.start();
+
+ WebSocketContainer wsContainer =
ContainerProvider.getWebSocketContainer();
+ ClientEndpointConfig clientEndpointConfig =
ClientEndpointConfig.Builder.create().build();
+ Session wsSession = wsContainer.connectToServer(
+ TesterProgrammaticEndpoint.class,
+ clientEndpointConfig,
+ new URI("ws://localhost:" + getPort() +
TesterAsyncTiming.Config.PATH));
+
+ AsyncTimingClientHandler handler = new AsyncTimingClientHandler();
+ wsSession.addMessageHandler(ByteBuffer.class, handler);
+ wsSession.getBasicRemote().sendText("Hello");
+
+ System.out.println("Sent Hello message, waiting for data");
+ handler.waitForLatch();
+ Assert.assertFalse(handler.hasFailed());
+ }
+
+ private static class AsyncTimingClientHandler implements
MessageHandler.Partial<ByteBuffer> {
+
+ private long lastMessage = 0;
+ private int sequence = 0;
+ private int count = 0;
+ private CountDownLatch latch = new CountDownLatch(1);
+ private volatile boolean fail = false;
+
+ @Override
+ public void onMessage(ByteBuffer message, boolean last) {
+ if (lastMessage == 0) {
+ // First message. Don't check
+ sequence ++;
+ lastMessage = System.nanoTime();
+ } else {
+ long newTime = System.nanoTime();
+ long diff = newTime - lastMessage;
+ lastMessage = newTime;
+
+ if (sequence == 0) {
+ sequence ++;
+ if (message.capacity() != 8192) {
+ System.out.println("Expected size 8192 but was [" +
message.capacity() + "], count [" + count + "]");
+ fail = true;
+ }
+ if (diff < 40000000) {
+ System.out.println("Expected diff > 40ms but was [" +
diff + "], count [" + count + "]");
+ fail = true;
+ }
+ } else if (sequence == 1) {
+ sequence ++;
+ if (message.capacity() != 8192) {
+ System.out.println("Expected size 8192 but was [" +
message.capacity() + "], count [" + count + "]");
+ fail = true;
+ }
+ if (diff > 500000) {
+ System.out.println("Expected diff < 500,000 but was ["
+ diff + "], count [" + count + "]");
+ fail = true;
+ }
+ } else if (sequence == 2) {
+ sequence = 0;
+ if (message.capacity() != 4096) {
+ System.out.println("Expected size 4096 but was [" +
message.capacity() + "], count [" + count + "]");
+ fail = true;
+ }
+ if (diff > 500000) {
+ System.out.println("Expected diff < 500,000 but was ["
+ diff + "], count [" + count + "]");
+ fail = true;
+ }
+ }
+ }
+
+ count ++;
+ if (count >= TesterAsyncTiming.Config.ITERATIONS * 3) {
+ latch.countDown();
+ }
+ }
+
+ public void waitForLatch() throws InterruptedException {
+ latch.await();
+ }
+
+ public boolean hasFailed() {
+ return fail;
+ }
+ }
+}
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