001 /*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019
020 package org.crsh.util;
021
022 import java.io.Closeable;
023 import java.io.IOException;
024 import java.io.InputStream;
025 import java.io.OutputStream;
026 import java.net.InetSocketAddress;
027 import java.net.Socket;
028
029 public abstract class AbstractSocketClient implements Closeable {
030
031 /** . */
032 private int port;
033
034 /** . */
035 private Socket socket;
036
037 /** . */
038 private InputStream in;
039
040 /** . */
041 private OutputStream out;
042
043 public AbstractSocketClient(int port) {
044 this.port = port;
045 }
046
047 public final void connect() throws IOException {
048 Socket socket = new Socket();
049 socket.connect(new InetSocketAddress(port));
050 InputStream in = socket.getInputStream();
051 OutputStream out = socket.getOutputStream();
052
053 //
054 this.socket = socket;
055 this.in = in;
056 this.out = out;
057
058 //
059 handle(in ,out);
060 }
061
062 protected abstract void handle(InputStream in, OutputStream out) throws IOException;
063
064 public final void close() {
065 try {
066 Safe.close(socket);
067 Safe.close(in);
068 Safe.close(out);
069 }
070 finally {
071 this.socket = null;
072 this.in = null;
073 this.out = null;
074 }
075 }
076 }