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 }