Author: markt
Date: Thu May 30 19:56:35 2013
New Revision: 1487991
URL: http://svn.apache.org/r1487991
Log:
Add a cut down, simple to debug, multicast tester than can be used to determine
if multicast cluster membership is going to work in a given environment.
Added:
tomcat/trunk/test/org/apache/catalina/tribes/TesterMulticast.java (with
props)
Added: tomcat/trunk/test/org/apache/catalina/tribes/TesterMulticast.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/test/org/apache/catalina/tribes/TesterMulticast.java?rev=1487991&view=auto
==============================================================================
--- tomcat/trunk/test/org/apache/catalina/tribes/TesterMulticast.java (added)
+++ tomcat/trunk/test/org/apache/catalina/tribes/TesterMulticast.java Thu May
30 19:56:35 2013
@@ -0,0 +1,123 @@
+/*
+ * 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.catalina.tribes;
+
+import java.net.DatagramPacket;
+import java.net.InetAddress;
+import java.net.MulticastSocket;
+import java.net.UnknownHostException;
+
+/**
+ * A simple multicast test that replicates the core elements of Tomcat's
+ * multicast membership. If this works then multicast membership should work.
+ */
+public class TesterMulticast {
+
+ private static final String ADDRESS = "228.0.0.4";
+ private static final int PORT = 56565;
+ private static final InetAddress INET_ADDRESS;
+
+ static {
+ InetAddress result = null;
+ try {
+ result = InetAddress.getByName(ADDRESS);
+ } catch (UnknownHostException e) {
+ // deal with later
+ }
+ INET_ADDRESS = result;
+ }
+
+
+ public static void main(String[] args) throws Exception {
+ // Start Rx Thread
+ Rx rx = new Rx();
+ Thread rxThread = new Thread(rx);
+ rxThread.setDaemon(true);
+ rxThread.start();
+
+ // Start Tx Thread
+ Tx tx = new Tx();
+ Thread txThread = new Thread(tx);
+ txThread.setDaemon(true);
+ txThread.start();
+
+
+ Thread.sleep(10000);
+
+ tx.stop();
+ rx.stop();
+ }
+
+ private static class Rx implements Runnable {
+
+ private volatile boolean run = true;
+
+ @Override
+ public void run() {
+ try (MulticastSocket s = new MulticastSocket(PORT)) {
+ s.setLoopbackMode(false);
+ s.joinGroup(INET_ADDRESS);
+ DatagramPacket p = new DatagramPacket(new byte[4], 4);
+ p.setAddress(INET_ADDRESS);
+ p.setPort(PORT);
+ while (run) {
+ s.receive(p);
+ String d = new String (p.getData());
+ System.out.println("Rx: " + d);
+ }
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+ public void stop() {
+ run = false;
+ }
+ }
+
+ private static class Tx implements Runnable {
+
+ private volatile boolean run = true;
+
+ @Override
+ public void run() {
+ try (MulticastSocket s = new MulticastSocket(PORT)) {
+ s.setLoopbackMode(false);
+ s.joinGroup(INET_ADDRESS);
+ DatagramPacket p = new DatagramPacket(new byte[4], 4);
+ p.setAddress(INET_ADDRESS);
+ p.setPort(PORT);
+ long counter = 0;
+ String msg;
+ while (run) {
+ msg = String.format("%04d", Long.valueOf(counter));
+ p.setData(msg.getBytes());
+ System.out.println("Tx: " + msg);
+ s.send(p);
+ counter++;
+ Thread.sleep(500);
+ }
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+ public void stop() {
+ run = false;
+ }
+ }
+}
Propchange: tomcat/trunk/test/org/apache/catalina/tribes/TesterMulticast.java
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