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org.eclipse.jetty.client.SelectConnector Maven / Gradle / Ivy
// ========================================================================
// Copyright (c) 2006-2009 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.client;
import java.io.IOException;
import java.net.SocketTimeoutException;
import java.nio.channels.SelectionKey;
import java.nio.channels.SocketChannel;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLSession;
import org.eclipse.jetty.http.HttpGenerator;
import org.eclipse.jetty.http.HttpParser;
import org.eclipse.jetty.http.ssl.SslContextFactory;
import org.eclipse.jetty.io.Buffer;
import org.eclipse.jetty.io.Buffers;
import org.eclipse.jetty.io.Buffers.Type;
import org.eclipse.jetty.io.BuffersFactory;
import org.eclipse.jetty.io.ConnectedEndPoint;
import org.eclipse.jetty.io.Connection;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.io.nio.SelectChannelEndPoint;
import org.eclipse.jetty.io.nio.SelectorManager;
import org.eclipse.jetty.io.nio.SslSelectChannelEndPoint;
import org.eclipse.jetty.util.component.AbstractLifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.thread.Timeout;
class SelectConnector extends AbstractLifeCycle implements HttpClient.Connector
{
private static final Logger LOG = Log.getLogger(SelectConnector.class);
private final HttpClient _httpClient;
private final Manager _selectorManager=new Manager();
private final Map _connectingChannels = new ConcurrentHashMap();
private SSLContext _sslContext;
private Buffers _sslBuffers;
/**
* @param httpClient the HttpClient this connector is associated to
*/
SelectConnector(HttpClient httpClient)
{
_httpClient = httpClient;
}
/* ------------------------------------------------------------ */
@Override
protected void doStart() throws Exception
{
super.doStart();
final boolean direct=_httpClient.getUseDirectBuffers();
SSLEngine sslEngine=_selectorManager.newSslEngine(null);
final SSLSession ssl_session=sslEngine.getSession();
_sslBuffers = BuffersFactory.newBuffers(
direct?Type.DIRECT:Type.INDIRECT,ssl_session.getApplicationBufferSize(),
direct?Type.DIRECT:Type.INDIRECT,ssl_session.getApplicationBufferSize(),
direct?Type.DIRECT:Type.INDIRECT,1024);
_selectorManager.start();
}
/* ------------------------------------------------------------ */
@Override
protected void doStop() throws Exception
{
_selectorManager.stop();
}
/* ------------------------------------------------------------ */
public void startConnection( HttpDestination destination )
throws IOException
{
try
{
SocketChannel channel = SocketChannel.open();
Address address = destination.isProxied() ? destination.getProxy() : destination.getAddress();
channel.socket().setTcpNoDelay(true);
if (_httpClient.isConnectBlocking())
{
channel.socket().connect(address.toSocketAddress(), _httpClient.getConnectTimeout());
channel.configureBlocking(false);
_selectorManager.register( channel, destination );
}
else
{
channel.configureBlocking( false );
channel.connect(address.toSocketAddress());
_selectorManager.register( channel, destination );
ConnectTimeout connectTimeout = new ConnectTimeout(channel, destination);
_httpClient.schedule(connectTimeout,_httpClient.getConnectTimeout());
_connectingChannels.put(channel, connectTimeout);
}
}
catch(IOException ex)
{
destination.onConnectionFailed(ex);
}
}
/* ------------------------------------------------------------ */
class Manager extends SelectorManager
{
@Override
public boolean dispatch(Runnable task)
{
return _httpClient._threadPool.dispatch(task);
}
@Override
protected void endPointOpened(SelectChannelEndPoint endpoint)
{
}
@Override
protected void endPointClosed(SelectChannelEndPoint endpoint)
{
}
@Override
protected void endPointUpgraded(ConnectedEndPoint endpoint, Connection oldConnection)
{
}
@Override
protected Connection newConnection(SocketChannel channel, SelectChannelEndPoint endpoint)
{
if (endpoint instanceof SslSelectChannelEndPoint)
return new HttpConnection(_sslBuffers,_sslBuffers,endpoint);
return new HttpConnection(_httpClient.getRequestBuffers(),_httpClient.getResponseBuffers(),endpoint);
}
@Override
protected SelectChannelEndPoint newEndPoint(SocketChannel channel, SelectSet selectSet, SelectionKey key) throws IOException
{
// We're connected, cancel the connect timeout
Timeout.Task connectTimeout = _connectingChannels.remove(channel);
if (connectTimeout != null)
connectTimeout.cancel();
LOG.debug("Channels with connection pending: {}", _connectingChannels.size());
// key should have destination at this point (will be replaced by endpoint after this call)
HttpDestination dest=(HttpDestination)key.attachment();
SelectChannelEndPoint ep=null;
if (dest.isSecure())
{
if (dest.isProxied())
{
SSLEngine engine=newSslEngine(channel);
ep = new ProxySelectChannelEndPoint(channel, selectSet, key, _sslBuffers, engine, (int)_httpClient.getIdleTimeout());
}
else
{
SSLEngine engine=newSslEngine(channel);
SslSelectChannelEndPoint sslEp = new SslSelectChannelEndPoint(_sslBuffers, channel, selectSet, key, engine, (int)_httpClient.getIdleTimeout());
sslEp.setAllowRenegotiate(_httpClient.getSslContextFactory().isAllowRenegotiate());
ep = sslEp;
}
}
else
{
ep = new SelectChannelEndPoint(channel, selectSet, key, (int)_httpClient.getIdleTimeout());
}
HttpConnection connection=(HttpConnection)ep.getConnection();
connection.setDestination(dest);
dest.onNewConnection(connection);
return ep;
}
private synchronized SSLEngine newSslEngine(SocketChannel channel) throws IOException
{
SslContextFactory sslContextFactory = _httpClient.getSslContextFactory();
if (_sslContext == null)
_sslContext = sslContextFactory.getSslContext();
SSLEngine sslEngine;
if (channel != null && sslContextFactory.isSessionCachingEnabled())
{
String peerHost = channel.socket().getInetAddress().getHostAddress();
int peerPort = channel.socket().getPort();
sslEngine = _sslContext.createSSLEngine(peerHost, peerPort);
}
else
{
sslEngine = _sslContext.createSSLEngine();
}
sslEngine.setUseClientMode(true);
sslEngine.beginHandshake();
return sslEngine;
}
/* ------------------------------------------------------------ */
/* (non-Javadoc)
* @see org.eclipse.io.nio.SelectorManager#connectionFailed(java.nio.channels.SocketChannel, java.lang.Throwable, java.lang.Object)
*/
@Override
protected void connectionFailed(SocketChannel channel, Throwable ex, Object attachment)
{
if (attachment instanceof HttpDestination)
((HttpDestination)attachment).onConnectionFailed(ex);
else
super.connectionFailed(channel,ex,attachment);
}
}
private class ConnectTimeout extends Timeout.Task
{
private final SocketChannel channel;
private final HttpDestination destination;
public ConnectTimeout(SocketChannel channel, HttpDestination destination)
{
this.channel = channel;
this.destination = destination;
}
@Override
public void expired()
{
if (channel.isConnectionPending())
{
LOG.debug("Channel {} timed out while connecting, closing it", channel);
try
{
// This will unregister the channel from the selector
channel.close();
}
catch (IOException x)
{
LOG.ignore(x);
}
destination.onConnectionFailed(new SocketTimeoutException());
}
}
}
/**
* An endpoint that is able to "upgrade" from a normal endpoint to a SSL endpoint.
* Since {@link HttpParser} and {@link HttpGenerator} only depend on the {@link EndPoint}
* interface, this class overrides all methods of {@link EndPoint} to provide the right
* behavior depending on the fact that it has been upgraded or not.
*/
public static class ProxySelectChannelEndPoint extends SslSelectChannelEndPoint
{
private final SelectChannelEndPoint plainEndPoint;
private volatile boolean upgraded = false;
public ProxySelectChannelEndPoint(SocketChannel channel, SelectorManager.SelectSet selectSet, SelectionKey key, Buffers sslBuffers, SSLEngine engine, int maxIdleTimeout) throws IOException
{
super(sslBuffers, channel, selectSet, key, engine, maxIdleTimeout);
this.plainEndPoint = new SelectChannelEndPoint(channel, selectSet, key, maxIdleTimeout);
}
public void upgrade()
{
upgraded = true;
}
public void shutdownOutput() throws IOException
{
if (upgraded)
super.shutdownOutput();
else
plainEndPoint.shutdownOutput();
}
public void close() throws IOException
{
if (upgraded)
super.close();
else
plainEndPoint.close();
}
public int fill(Buffer buffer) throws IOException
{
if (upgraded)
return super.fill(buffer);
else
return plainEndPoint.fill(buffer);
}
public int flush(Buffer buffer) throws IOException
{
if (upgraded)
return super.flush(buffer);
else
return plainEndPoint.flush(buffer);
}
public int flush(Buffer header, Buffer buffer, Buffer trailer) throws IOException
{
if (upgraded)
return super.flush(header, buffer, trailer);
else
return plainEndPoint.flush(header, buffer, trailer);
}
public String getLocalAddr()
{
if (upgraded)
return super.getLocalAddr();
else
return plainEndPoint.getLocalAddr();
}
public String getLocalHost()
{
if (upgraded)
return super.getLocalHost();
else
return plainEndPoint.getLocalHost();
}
public int getLocalPort()
{
if (upgraded)
return super.getLocalPort();
else
return plainEndPoint.getLocalPort();
}
public String getRemoteAddr()
{
if (upgraded)
return super.getRemoteAddr();
else
return plainEndPoint.getRemoteAddr();
}
public String getRemoteHost()
{
if (upgraded)
return super.getRemoteHost();
else
return plainEndPoint.getRemoteHost();
}
public int getRemotePort()
{
if (upgraded)
return super.getRemotePort();
else
return plainEndPoint.getRemotePort();
}
public boolean isBlocking()
{
if (upgraded)
return super.isBlocking();
else
return plainEndPoint.isBlocking();
}
public boolean isBufferred()
{
if (upgraded)
return super.isBufferred();
else
return plainEndPoint.isBufferred();
}
public boolean blockReadable(long millisecs) throws IOException
{
if (upgraded)
return super.blockReadable(millisecs);
else
return plainEndPoint.blockReadable(millisecs);
}
public boolean blockWritable(long millisecs) throws IOException
{
if (upgraded)
return super.blockWritable(millisecs);
else
return plainEndPoint.blockWritable(millisecs);
}
public boolean isOpen()
{
if (upgraded)
return super.isOpen();
else
return plainEndPoint.isOpen();
}
public Object getTransport()
{
if (upgraded)
return super.getTransport();
else
return plainEndPoint.getTransport();
}
public boolean isBufferingInput()
{
if (upgraded)
return super.isBufferingInput();
else
return plainEndPoint.isBufferingInput();
}
public boolean isBufferingOutput()
{
if (upgraded)
return super.isBufferingOutput();
else
return plainEndPoint.isBufferingOutput();
}
public void flush() throws IOException
{
if (upgraded)
super.flush();
else
plainEndPoint.flush();
}
public int getMaxIdleTime()
{
if (upgraded)
return super.getMaxIdleTime();
else
return plainEndPoint.getMaxIdleTime();
}
public void setMaxIdleTime(int timeMs) throws IOException
{
if (upgraded)
super.setMaxIdleTime(timeMs);
else
plainEndPoint.setMaxIdleTime(timeMs);
}
}
}
