www.pudn.com > jnp-src.rar > MessageOutputStream.java

/*
 * Java Network Programming, Second Edition
 * Merlin Hughes, Michael Shoffner, Derek Hamner
 * Manning Publications Company; ISBN 188477749X
 *
 * http://nitric.com/jnp/
 *
 * Copyright (c) 1997-1999 Merlin Hughes, Michael Shoffner, Derek Hamner;
 * all rights reserved; see license.txt for details.
 */

import java.io.*; 
 
public class MessageOutputStream extends MessageOutput { 
  protected OutputStream rawOut; 
  protected DataOutputStream dataOut; 
  protected ByteArrayOutputStream byteArrayOut; 
   
  public MessageOutputStream (OutputStream out) { 
    super (new ByteArrayOutputStream ()); 
    rawOut = out; 
    dataOut = new DataOutputStream (rawOut); 
    byteArrayOut = (ByteArrayOutputStream) super.out; 
  } 
 
  public void send () throws IOException { 
    synchronized (rawOut) { 
      dataOut.writeInt (byteArrayOut.size ()); 
      byteArrayOut.writeTo (rawOut); 
    } 
    byteArrayOut.reset (); 
    rawOut.flush (); 
  } 
}