| /* |
| * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| * |
| * @bug 4095393 |
| * |
| * @summary this tests a regression in 1.2, beta 2 and earlier where |
| * the DatagramPackets sent the entire buffer, not the buffer length |
| * of the packet. |
| * |
| * @author Benjamin Renaud |
| */ |
| |
| import java.io.IOException; |
| import java.net.DatagramPacket; |
| import java.net.DatagramSocket; |
| import java.net.InetAddress; |
| |
| public class SendSize { |
| static final int bufferLength = 512; |
| static final int packetLength = 256; |
| |
| public static void main(String[] args) throws Exception { |
| DatagramSocket serverSocket = new DatagramSocket(); |
| new ServerThread(serverSocket).start(); |
| new ClientThread(serverSocket.getLocalPort()).start(); |
| } |
| |
| static class ServerThread extends Thread { |
| DatagramSocket server; |
| |
| ServerThread(DatagramSocket server) { |
| this.server = server; |
| } |
| |
| public void run() { |
| try { |
| System.err.println("started server thread: " + server); |
| byte[] buf = new byte[1024]; |
| DatagramPacket receivePacket = new DatagramPacket(buf, |
| buf.length); |
| server.receive(receivePacket); |
| int len = receivePacket.getLength(); |
| switch(len) { |
| case packetLength: |
| System.out.println("receive length is: " + len); |
| break; |
| default: |
| throw new RuntimeException( |
| "receive length is: " + len + |
| ", send length: " + packetLength + |
| ", buffer length: " + buf.length); |
| } |
| return; |
| } catch (Exception e) { |
| e.printStackTrace(); |
| throw new RuntimeException("caugth: " + e); |
| } finally { |
| if (server != null) { server.close(); } |
| } |
| } |
| } |
| |
| static class ClientThread extends Thread { |
| |
| int serverPort; |
| DatagramSocket client; |
| InetAddress host; |
| |
| ClientThread(int serverPort)throws IOException { |
| this.serverPort = serverPort; |
| this.host = InetAddress.getLocalHost(); |
| this.client = new DatagramSocket(); |
| } |
| |
| public void run() { |
| try { |
| System.err.println("started client thread: " + client); |
| byte[] buf = new byte[bufferLength]; |
| DatagramPacket sendPacket = |
| new DatagramPacket(buf, packetLength, |
| host, serverPort); |
| for (int i = 0; i < 10; i++) { |
| client.send(sendPacket); |
| } |
| System.err.println("sent 10 packets"); |
| return; |
| } catch (Exception e) { |
| e.printStackTrace(); |
| throw new RuntimeException("caught: " + e); |
| } finally { |
| if (client != null) { client.close(); } |
| } |
| } |
| } |
| } |