/*
 * Created on 21 Jun 2006
 * Created by Paul Gardner
 * Copyright (C) 2006 Aelitis, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program 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 for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * 
 * AELITIS, SAS au capital de 46,603.30 euros
 * 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
 *
 */

package com.aelitis.azureus.core.networkmanager.impl;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;


public interface 
TransportHelper 
{
	public InetSocketAddress
	getAddress();

	public String
	getName();
	
	public boolean
	minimiseOverheads();
	
	public int
	getConnectTimeout();
	
	public int
	getReadTimeout();
	
	public boolean
	delayWrite(
		ByteBuffer	buffer );
	
	public boolean
	hasDelayedWrite();
	
	public int 
	write( 
		ByteBuffer 	buffer,
		boolean		partial_write ) 
	
		throws IOException;  	

    public long 
    write( 
    	ByteBuffer[] buffers, 
    	int array_offset, 
    	int length ) 
    
    	throws IOException;

    public int 
    read( 
    	ByteBuffer buffer ) 
    
    	throws IOException;  	

    public long 
    read( 
    	ByteBuffer[] buffers, 
    	int array_offset, 
    	int length ) 
    
    	throws IOException;  	

    public void
    pauseReadSelects();
    
    public void
    pauseWriteSelects();
 
    public void
    resumeReadSelects();
    
    public void
    resumeWriteSelects();
    
    public void
    registerForReadSelects(
    	selectListener	listener,
    	Object			attachment );
    
    public void
    registerForWriteSelects(
    	selectListener	listener,
    	Object			attachment );
    
    public void
    cancelReadSelects();
    
    public void
    cancelWriteSelects();
    
    public void
    close(
    	String		reason );
    
    public void
    failed(
    	Throwable	reason );
    
    public interface
    selectListener
    {
    	public boolean 
    	selectSuccess(
    		TransportHelper	helper, 
    		Object 			attachment );

        public void 
        selectFailure(
        	TransportHelper	helper,
        	Object 			attachment, 
        	Throwable 		msg);
    }
    
    public void
    setUserData(
    	Object	key,
    	Object	data );
    
    public Object
    getUserData(
    	Object	key );
    
	public void
	setTrace(
		boolean	on );
}