/*

  * 

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

  * 

  * Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.

  * 

  * The contents of this file are subject to the terms of either the GNU

  * General Public License Version 2 only ("GPL") or the Common Development

  * and Distribution License("CDDL") (collectively, the "License").  You

  * may not use this file except in compliance with the License. You can obtain

  * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html

  * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific

  * language governing permissions and limitations under the License.

  * 

  * When distributing the software, include this License Header Notice in each

  * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.

  * Sun designates this particular file as subject to the "Classpath" exception

  * as provided by Sun in the GPL Version 2 section of the License file that

  * accompanied this code.  If applicable, add the following below the License

  * Header, with the fields enclosed by brackets [] replaced by your own

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  * If you wish your version of this file to be governed by only the CDDL or

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  * elects to include this software in this distribution under the [CDDL or GPL

  * Version 2] license."  If you don't indicate a single choice of license, a

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 package com.sun.grizzly.utils;

 import java.io.DataInputStream;

 import java.io.DataOutputStream;

 import java.io.EOFException;

 import java.io.IOException;

 import java.net.Socket;

 /**

  * @author Alexey Stashok

  */

 public class TCPIOClient {

     private String host;

     private int port;

     private Socket socket;

     private DataInputStream is;

     private DataOutputStream os;

     public TCPIOClient(String host, int port) {

         this.host = host;

         this.port = port;

     }

     public void connect() throws IOException {

         socket = new Socket(host, port);

         socket.setSoTimeout(10 * 1000);

         is = new DataInputStream(socket.getInputStream());

         os = new DataOutputStream(socket.getOutputStream());

     }

     public void send(byte[] msg) throws IOException {

         send(msg, true);

     }

     public void send(byte[] msg, boolean needFlush) throws IOException {

         os.write(msg);

         if (needFlush) {

             os.flush();

         }

     }

     public byte[] receive(byte[] buf) throws IOException {

         return receive(buf, buf.length);

     }

     public byte[] receive(byte[] buf, int length) throws IOException {

         int bytesRead = 0;

         while(bytesRead < length) {

             int readBytesCount = is.read(buf, bytesRead, length - bytesRead);

             if (readBytesCount == -1) throw new EOFException("Unexpected client EOF!");

             bytesRead += readBytesCount;

         }

         return buf;

     }

     public void close() throws IOException {

         if (is != null) {

             try {

                 is.close();

             } catch (IOException ex) {

             }

         }

         if (os != null) {

             try {

                 os.close();

             } catch (IOException ex) {

             }

         }

         if (socket != null) {

             try {

                 socket.close();

             } catch (IOException ex) {

             }

         }

     }

 }