001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.mina.example.udp.perf; 021 022import java.io.IOException; 023import java.net.InetSocketAddress; 024 025import org.apache.mina.core.buffer.IoBuffer; 026import org.apache.mina.core.future.ConnectFuture; 027import org.apache.mina.core.service.IoConnector; 028import org.apache.mina.core.service.IoHandlerAdapter; 029import org.apache.mina.core.session.IdleStatus; 030import org.apache.mina.core.session.IoSession; 031import org.apache.mina.transport.socket.nio.NioDatagramConnector; 032 033/** 034 * An UDP client taht just send thousands of small messages to a UdpServer. 035 * 036 * This class is used for performance test purposes. It does nothing at all, but send a message 037 * repetitly to a server. 038 * 039 * @author <a href="http://mina.apache.org">Apache MINA Project</a> 040 */ 041public class UdpClient extends IoHandlerAdapter { 042 /** The connector */ 043 private IoConnector connector; 044 045 /** The session */ 046 private static IoSession session; 047 048 /** 049 * Create the UdpClient's instance 050 */ 051 public UdpClient() { 052 connector = new NioDatagramConnector(); 053 054 connector.setHandler(this); 055 056 ConnectFuture connFuture = connector.connect(new InetSocketAddress("localhost", UdpServer.PORT)); 057 058 connFuture.awaitUninterruptibly(); 059 060 session = connFuture.getSession(); 061 } 062 063 /** 064 * {@inheritDoc} 065 */ 066 @Override 067 public void exceptionCaught(IoSession session, Throwable cause) throws Exception { 068 cause.printStackTrace(); 069 } 070 071 /** 072 * {@inheritDoc} 073 */ 074 @Override 075 public void messageReceived(IoSession session, Object message) throws Exception { 076 } 077 078 /** 079 * {@inheritDoc} 080 */ 081 @Override 082 public void messageSent(IoSession session, Object message) throws Exception { 083 } 084 085 /** 086 * {@inheritDoc} 087 */ 088 @Override 089 public void sessionClosed(IoSession session) throws Exception { 090 } 091 092 /** 093 * {@inheritDoc} 094 */ 095 @Override 096 public void sessionCreated(IoSession session) throws Exception { 097 } 098 099 /** 100 * {@inheritDoc} 101 */ 102 @Override 103 public void sessionIdle(IoSession session, IdleStatus status) throws Exception { 104 } 105 106 /** 107 * {@inheritDoc} 108 */ 109 @Override 110 public void sessionOpened(IoSession session) throws Exception { 111 } 112 113 /** 114 * The main method : instanciates a client, and send N messages. We sleep 115 * between each K messages sent, to avoid the server saturation. 116 * @param args The arguments 117 * @throws Exception If something went wrong 118 */ 119 public static void main(String[] args) throws Exception { 120 UdpClient client = new UdpClient(); 121 122 long t0 = System.currentTimeMillis(); 123 124 for (int i = 0; i <= UdpServer.MAX_RECEIVED; i++) { 125 Thread.sleep(1); 126 127 String str = Integer.toString(i); 128 byte[] data = str.getBytes(); 129 IoBuffer buffer = IoBuffer.allocate(data.length); 130 buffer.put(data); 131 buffer.flip(); 132 session.write(buffer); 133 134 if (i % 10000 == 0) { 135 System.out.println("Sent " + i + " messages"); 136 } 137 } 138 139 long t1 = System.currentTimeMillis(); 140 141 System.out.println("Sent messages delay : " + (t1 - t0)); 142 143 Thread.sleep(100000); 144 145 client.connector.dispose(true); 146 } 147}