85 lines
2.7 KiB
Java
85 lines
2.7 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.catalina.ha.backend;
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import java.net.DatagramPacket;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.MulticastSocket;
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import java.nio.charset.StandardCharsets;
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import org.apache.juli.logging.Log;
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import org.apache.juli.logging.LogFactory;
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/*
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* Sender to proxies using multicast socket.
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*/
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public class MultiCastSender
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implements Sender {
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private static final Log log = LogFactory.getLog(HeartbeatListener.class);
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HeartbeatListener config = null;
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/* for multicasting stuff */
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MulticastSocket s = null;
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InetAddress group = null;
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@Override
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public void init(HeartbeatListener config) throws Exception {
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this.config = config;
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}
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@Override
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public int send(String mess) throws Exception {
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if (s == null) {
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try {
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group = InetAddress.getByName(config.getGroup());
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if (config.getHost() != null) {
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InetAddress addr = InetAddress.getByName(config.getHost());
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InetSocketAddress addrs = new InetSocketAddress(addr, config.getMultiport());
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s = new MulticastSocket(addrs);
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} else
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s = new MulticastSocket(config.getMultiport());
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s.setTimeToLive(config.getTtl());
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s.joinGroup(group);
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} catch (Exception ex) {
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log.error("Unable to use multicast: " + ex);
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s = null;
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return -1;
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}
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}
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byte[] buf;
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buf = mess.getBytes(StandardCharsets.US_ASCII);
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DatagramPacket data = new DatagramPacket(buf, buf.length, group, config.getMultiport());
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try {
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s.send(data);
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} catch (Exception ex) {
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log.error("Unable to send collected load information: " + ex);
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s.close();
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s = null;
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return -1;
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}
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return 0;
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}
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}
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