org.eclipse.jetty.client.AbstractHttpConnection Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2013 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.io.InputStream;
import java.util.Collections;
import java.util.concurrent.atomic.AtomicBoolean;
import org.eclipse.jetty.client.security.Authentication;
import org.eclipse.jetty.http.HttpFields;
import org.eclipse.jetty.http.HttpGenerator;
import org.eclipse.jetty.http.HttpHeaderValues;
import org.eclipse.jetty.http.HttpHeaders;
import org.eclipse.jetty.http.HttpMethods;
import org.eclipse.jetty.http.HttpParser;
import org.eclipse.jetty.http.HttpSchemes;
import org.eclipse.jetty.http.HttpStatus;
import org.eclipse.jetty.http.HttpVersions;
import org.eclipse.jetty.io.AbstractConnection;
import org.eclipse.jetty.io.Buffer;
import org.eclipse.jetty.io.Buffers;
import org.eclipse.jetty.io.ByteArrayBuffer;
import org.eclipse.jetty.io.Connection;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.io.EofException;
import org.eclipse.jetty.io.View;
import org.eclipse.jetty.util.component.AggregateLifeCycle;
import org.eclipse.jetty.util.component.Dumpable;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.thread.Timeout;
/**
*
* @version $Revision: 879 $ $Date: 2009-09-11 16:13:28 +0200 (Fri, 11 Sep 2009) $
*/
public abstract class AbstractHttpConnection extends AbstractConnection implements Dumpable
{
private static final Logger LOG = Log.getLogger(AbstractHttpConnection.class);
protected HttpDestination _destination;
protected HttpGenerator _generator;
protected HttpParser _parser;
protected boolean _http11 = true;
protected int _status;
protected Buffer _connectionHeader;
protected boolean _reserved;
// The current exchange waiting for a response
protected volatile HttpExchange _exchange;
protected HttpExchange _pipeline;
private final Timeout.Task _idleTimeout = new ConnectionIdleTask();
private AtomicBoolean _idle = new AtomicBoolean(false);
AbstractHttpConnection(Buffers requestBuffers, Buffers responseBuffers, EndPoint endp)
{
super(endp);
_generator = new HttpGenerator(requestBuffers,endp);
_parser = new HttpParser(responseBuffers,endp,new Handler());
}
public void setReserved (boolean reserved)
{
_reserved = reserved;
}
public boolean isReserved()
{
return _reserved;
}
public HttpDestination getDestination()
{
return _destination;
}
public void setDestination(HttpDestination destination)
{
_destination = destination;
}
public boolean send(HttpExchange ex) throws IOException
{
LOG.debug("Send {} on {}",ex,this);
synchronized (this)
{
if (_exchange != null)
{
if (_pipeline != null)
throw new IllegalStateException(this + " PIPELINED!!! _exchange=" + _exchange);
_pipeline = ex;
return true;
}
_exchange = ex;
_exchange.associate(this);
// The call to associate() may have closed the connection, check if it's the case
if (!_endp.isOpen())
{
_exchange.disassociate();
_exchange = null;
return false;
}
_exchange.setStatus(HttpExchange.STATUS_WAITING_FOR_COMMIT);
adjustIdleTimeout();
return true;
}
}
private void adjustIdleTimeout() throws IOException
{
// Adjusts the idle timeout in case the default or exchange timeout
// are greater. This is needed for long polls, where one wants an
// aggressive releasing of idle connections (so idle timeout is small)
// but still allow long polls to complete normally
long timeout = _exchange.getTimeout();
if (timeout <= 0)
timeout = _destination.getHttpClient().getTimeout();
long endPointTimeout = _endp.getMaxIdleTime();
if (timeout > 0 && timeout > endPointTimeout)
{
// Make it larger than the exchange timeout so that there are
// no races between the idle timeout and the exchange timeout
// when trying to close the endpoint
_endp.setMaxIdleTime(2 * (int)timeout);
}
}
public abstract Connection handle() throws IOException;
public boolean isIdle()
{
synchronized (this)
{
return _exchange == null;
}
}
public boolean isSuspended()
{
return false;
}
public void onClose()
{
}
/**
* @throws IOException
*/
protected void commitRequest() throws IOException
{
synchronized (this)
{
_status=0;
if (_exchange.getStatus() != HttpExchange.STATUS_WAITING_FOR_COMMIT)
throw new IllegalStateException();
_exchange.setStatus(HttpExchange.STATUS_SENDING_REQUEST);
_generator.setVersion(_exchange.getVersion());
String method=_exchange.getMethod();
String uri = _exchange.getRequestURI();
if (_destination.isProxied())
{
if (!HttpMethods.CONNECT.equals(method) && uri.startsWith("/"))
{
boolean secure = _destination.isSecure();
String host = _destination.getAddress().getHost();
int port = _destination.getAddress().getPort();
StringBuilder absoluteURI = new StringBuilder();
absoluteURI.append(secure ? HttpSchemes.HTTPS : HttpSchemes.HTTP);
absoluteURI.append("://");
absoluteURI.append(host);
// Avoid adding default ports
if (!(secure && port == 443 || !secure && port == 80))
absoluteURI.append(":").append(port);
absoluteURI.append(uri);
uri = absoluteURI.toString();
}
Authentication auth = _destination.getProxyAuthentication();
if (auth != null)
auth.setCredentials(_exchange);
}
_generator.setRequest(method, uri);
_parser.setHeadResponse(HttpMethods.HEAD.equalsIgnoreCase(method));
HttpFields requestHeaders = _exchange.getRequestFields();
if (_exchange.getVersion() >= HttpVersions.HTTP_1_1_ORDINAL)
{
if (!requestHeaders.containsKey(HttpHeaders.HOST_BUFFER))
requestHeaders.add(HttpHeaders.HOST_BUFFER,_destination.getHostHeader());
}
Buffer requestContent = _exchange.getRequestContent();
if (requestContent != null)
{
requestHeaders.putLongField(HttpHeaders.CONTENT_LENGTH, requestContent.length());
_generator.completeHeader(requestHeaders,false);
_generator.addContent(new View(requestContent),true);
_exchange.setStatus(HttpExchange.STATUS_WAITING_FOR_RESPONSE);
}
else
{
InputStream requestContentStream = _exchange.getRequestContentSource();
if (requestContentStream != null)
{
_generator.completeHeader(requestHeaders, false);
}
else
{
requestHeaders.remove(HttpHeaders.CONTENT_LENGTH);
_generator.completeHeader(requestHeaders, true);
_exchange.setStatus(HttpExchange.STATUS_WAITING_FOR_RESPONSE);
}
}
}
}
protected void reset() throws IOException
{
_connectionHeader = null;
_parser.reset();
_generator.reset();
_http11 = true;
}
private class Handler extends HttpParser.EventHandler
{
@Override
public void startRequest(Buffer method, Buffer url, Buffer version) throws IOException
{
// System.out.println( method.toString() + "///" + url.toString() +
// "///" + version.toString() );
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