org.eclipse.jetty.io.nio.ChannelEndPoint Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.io.nio;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.nio.channels.ByteChannel;
import java.nio.channels.GatheringByteChannel;
import java.nio.channels.SelectableChannel;
import java.nio.channels.SocketChannel;
import org.eclipse.jetty.io.Buffer;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.util.StringUtil;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
/**
* Channel End Point.
* Holds the channel and socket for an NIO endpoint.
*
*/
public class ChannelEndPoint implements EndPoint
{
private static final Logger LOG = Log.getLogger(ChannelEndPoint.class);
protected final ByteChannel _channel;
protected final ByteBuffer[] _gather2=new ByteBuffer[2];
protected final Socket _socket;
protected final InetSocketAddress _local;
protected final InetSocketAddress _remote;
protected volatile int _maxIdleTime;
private volatile boolean _ishut;
private volatile boolean _oshut;
public ChannelEndPoint(ByteChannel channel) throws IOException
{
super();
this._channel = channel;
_socket=(channel instanceof SocketChannel)?((SocketChannel)channel).socket():null;
if (_socket!=null)
{
_local=(InetSocketAddress)_socket.getLocalSocketAddress();
_remote=(InetSocketAddress)_socket.getRemoteSocketAddress();
_maxIdleTime=_socket.getSoTimeout();
}
else
{
_local=_remote=null;
}
}
protected ChannelEndPoint(ByteChannel channel, int maxIdleTime) throws IOException
{
this._channel = channel;
_maxIdleTime=maxIdleTime;
_socket=(channel instanceof SocketChannel)?((SocketChannel)channel).socket():null;
if (_socket!=null)
{
_local=(InetSocketAddress)_socket.getLocalSocketAddress();
_remote=(InetSocketAddress)_socket.getRemoteSocketAddress();
_socket.setSoTimeout(_maxIdleTime);
}
else
{
_local=_remote=null;
}
}
public boolean isBlocking()
{
return !(_channel instanceof SelectableChannel) || ((SelectableChannel)_channel).isBlocking();
}
public boolean blockReadable(long millisecs) throws IOException
{
return true;
}
public boolean blockWritable(long millisecs) throws IOException
{
return true;
}
/*
* @see org.eclipse.io.EndPoint#isOpen()
*/
public boolean isOpen()
{
return _channel.isOpen();
}
/** Shutdown the channel Input.
* Cannot be overridden. To override, see {@link #shutdownInput()}
* @throws IOException
*/
protected final void shutdownChannelInput() throws IOException
{
LOG.debug("ishut {}", this);
_ishut = true;
if (_channel.isOpen())
{
if (_socket != null)
{
try
{
if (!_socket.isInputShutdown())
{
_socket.shutdownInput();
}
}
catch (SocketException e)
{
LOG.debug(e.toString());
LOG.ignore(e);
}
finally
{
if (_oshut)
{
close();
}
}
}
}
}
/* (non-Javadoc)
* @see org.eclipse.io.EndPoint#close()
*/
public void shutdownInput() throws IOException
{
shutdownChannelInput();
}
protected final void shutdownChannelOutput() throws IOException
{
LOG.debug("oshut {}",this);
_oshut = true;
if (_channel.isOpen())
{
if (_socket != null)
{
try
{
if (!_socket.isOutputShutdown())
{
_socket.shutdownOutput();
}
}
catch (SocketException e)
{
LOG.debug(e.toString());
LOG.ignore(e);
}
finally
{
if (_ishut)
{
close();
}
}
}
}
}
/* (non-Javadoc)
* @see org.eclipse.io.EndPoint#close()
*/
public void shutdownOutput() throws IOException
{
shutdownChannelOutput();
}
public boolean isOutputShutdown()
{
return _oshut || !_channel.isOpen() || _socket != null && _socket.isOutputShutdown();
}
public boolean isInputShutdown()
{
return _ishut || !_channel.isOpen() || _socket != null && _socket.isInputShutdown();
}
/* (non-Javadoc)
* @see org.eclipse.io.EndPoint#close()
*/
public void close() throws IOException
{
LOG.debug("close {}",this);
_channel.close();
}
/* (non-Javadoc)
* @see org.eclipse.io.EndPoint#fill(org.eclipse.io.Buffer)
*/
public int fill(Buffer buffer) throws IOException
{
if (_ishut)
return -1;
Buffer buf = buffer.buffer();
int len=0;
if (buf instanceof NIOBuffer)
{
final NIOBuffer nbuf = (NIOBuffer)buf;
final ByteBuffer bbuf=nbuf.getByteBuffer();
//noinspection SynchronizationOnLocalVariableOrMethodParameter
try
{
synchronized(bbuf)
{
try
{
bbuf.position(buffer.putIndex());
len=_channel.read(bbuf);
}
finally
{
buffer.setPutIndex(bbuf.position());
bbuf.position(0);
}
}
if (len<0 && isOpen())
{
if (!isInputShutdown())
shutdownInput();
if (isOutputShutdown())
_channel.close();
}
}
catch (IOException x)
{
LOG.debug("Exception while filling", x);
try
{
if (_channel.isOpen())
_channel.close();
}
catch (Exception xx)
{
LOG.ignore(xx);
}
if (len>0)
throw x;
len=-1;
}
}
else
{
throw new IOException("Not Implemented");
}
return len;
}
/* (non-Javadoc)
* @see org.eclipse.io.EndPoint#flush(org.eclipse.io.Buffer)
*/
public int flush(Buffer buffer) throws IOException
{
Buffer buf = buffer.buffer();
int len=0;
if (buf instanceof NIOBuffer)
{
final NIOBuffer nbuf = (NIOBuffer)buf;
final ByteBuffer bbuf=nbuf.getByteBuffer().asReadOnlyBuffer();
try
{
bbuf.position(buffer.getIndex());
bbuf.limit(buffer.putIndex());
len=_channel.write(bbuf);
}
finally
{
if (len>0)
buffer.skip(len);
}
}
else if (buf instanceof RandomAccessFileBuffer)
{
len = ((RandomAccessFileBuffer)buf).writeTo(_channel,buffer.getIndex(),buffer.length());
if (len>0)
buffer.skip(len);
}
else if (buffer.array()!=null)
{
ByteBuffer b = ByteBuffer.wrap(buffer.array(), buffer.getIndex(), buffer.length());
len=_channel.write(b);
if (len>0)
buffer.skip(len);
}
else
{
throw new IOException("Not Implemented");
}
return len;
}
/* (non-Javadoc)
* @see org.eclipse.io.EndPoint#flush(org.eclipse.io.Buffer, org.eclipse.io.Buffer, org.eclipse.io.Buffer)
*/
public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
{
int length=0;
Buffer buf0 = header==null?null:header.buffer();
Buffer buf1 = buffer==null?null:buffer.buffer();
if (_channel instanceof GatheringByteChannel &&
header!=null && header.length()!=0 && buf0 instanceof NIOBuffer &&
buffer!=null && buffer.length()!=0 && buf1 instanceof NIOBuffer)
{
length = gatheringFlush(header,((NIOBuffer)buf0).getByteBuffer(),buffer,((NIOBuffer)buf1).getByteBuffer());
}
else
{
// flush header
if (header!=null && header.length()>0)
length=flush(header);
// flush buffer
if ((header==null || header.length()==0) &&
buffer!=null && buffer.length()>0)
length+=flush(buffer);
// flush trailer
if ((header==null || header.length()==0) &&
(buffer==null || buffer.length()==0) &&
trailer!=null && trailer.length()>0)
length+=flush(trailer);
}
return length;
}
protected int gatheringFlush(Buffer header, ByteBuffer bbuf0, Buffer buffer, ByteBuffer bbuf1) throws IOException
{
int length;
synchronized(this)
{
// Adjust position indexs of buf0 and buf1
bbuf0=bbuf0.asReadOnlyBuffer();
bbuf0.position(header.getIndex());
bbuf0.limit(header.putIndex());
bbuf1=bbuf1.asReadOnlyBuffer();
bbuf1.position(buffer.getIndex());
bbuf1.limit(buffer.putIndex());
_gather2[0]=bbuf0;
_gather2[1]=bbuf1;
// do the gathering write.
length=(int)((GatheringByteChannel)_channel).write(_gather2);
int hl=header.length();
if (length>hl)
{
header.clear();
buffer.skip(length-hl);
}
else if (length>0)
{
header.skip(length);
}
}
return length;
}
/* ------------------------------------------------------------ */
/**
* @return Returns the channel.
*/
public ByteChannel getChannel()
{
return _channel;
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.io.EndPoint#getLocalAddr()
*/
public String getLocalAddr()
{
if (_socket==null)
return null;
if (_local==null || _local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
return StringUtil.ALL_INTERFACES;
return _local.getAddress().getHostAddress();
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.io.EndPoint#getLocalHost()
*/
public String getLocalHost()
{
if (_socket==null)
return null;
if (_local==null || _local.getAddress()==null || _local.getAddress().isAnyLocalAddress())
return StringUtil.ALL_INTERFACES;
return _local.getAddress().getCanonicalHostName();
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.io.EndPoint#getLocalPort()
*/
public int getLocalPort()
{
if (_socket==null)
return 0;
if (_local==null)
return -1;
return _local.getPort();
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.io.EndPoint#getRemoteAddr()
*/
public String getRemoteAddr()
{
if (_socket==null)
return null;
if (_remote==null)
return null;
return _remote.getAddress().getHostAddress();
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.io.EndPoint#getRemoteHost()
*/
public String getRemoteHost()
{
if (_socket==null)
return null;
if (_remote==null)
return null;
return _remote.getAddress().getCanonicalHostName();
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.io.EndPoint#getRemotePort()
*/
public int getRemotePort()
{
if (_socket==null)
return 0;
return _remote==null?-1:_remote.getPort();
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.io.EndPoint#getConnection()
*/
public Object getTransport()
{
return _channel;
}
/* ------------------------------------------------------------ */
public void flush()
throws IOException
{
}
/* ------------------------------------------------------------ */
public int getMaxIdleTime()
{
return _maxIdleTime;
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.io.bio.StreamEndPoint#setMaxIdleTime(int)
*/
public void setMaxIdleTime(int timeMs) throws IOException
{
if (_socket!=null && timeMs!=_maxIdleTime)
_socket.setSoTimeout(timeMs>0?timeMs:0);
_maxIdleTime=timeMs;
}
}