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/*
* Copyright 1996 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.rmi.transport.proxy;
import java.io.*;
/**
* The HttpSendOutputStream class is used by the HttpSendSocket class as
* a layer on the top of the OutputStream it returns so that it can be
* notified of attempts to write to it. This allows the HttpSendSocket
* to know when it should construct a new message.
*/
class HttpSendOutputStream extends FilterOutputStream {
/** the HttpSendSocket object that is providing this stream */
HttpSendSocket owner;
/**
* Create new filter on a given output stream.
* @param out the OutputStream to filter from
* @param owner the HttpSendSocket that is providing this stream
*/
public HttpSendOutputStream(OutputStream out, HttpSendSocket owner)
throws IOException
{
super(out);
this.owner = owner;
}
/**
* Mark this stream as inactive for its owner socket, so the next time
* a write is attempted, the owner will be notified and a new underlying
* output stream obtained.
*/
public void deactivate()
{
out = null;
}
/**
* Write a byte of data to the stream.
*/
public void write(int b) throws IOException
{
if (out == null)
out = owner.writeNotify();
out.write(b);
}
/**
* Write a subarray of bytes.
* @param b the buffer from which the data is to be written
* @param off the start offset of the data
* @param len the number of bytes to be written
*/
public void write(byte b[], int off, int len) throws IOException
{
if (len == 0)
return;
if (out == null)
out = owner.writeNotify();
out.write(b, off, len);
}
/**
* Flush the stream.
*/
public void flush() throws IOException
{
if (out != null)
out.flush();
}
/**
* Close the stream.
*/
public void close() throws IOException
{
flush();
owner.close();
}
}
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