coyoteconnector.java

Tomcat 4.1与WebServer集成组件的源代码包.

/*
 * $Header: /home/cvs/jakarta-tomcat-connectors/coyote/src/java/org/apache/coyote/tomcat4/CoyoteConnector.java,v 1.20.2.1 2003/02/09 22:30:02 remm Exp $
 * $Revision: 1.20.2.1 $
 * $Date: 2003/02/09 22:30:02 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */


package org.apache.coyote.tomcat4;


import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.AccessControlException;
import java.util.Stack;
import java.util.Vector;
import java.util.Enumeration;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.UnrecoverableKeyException;
import java.security.KeyManagementException;

import org.apache.tomcat.util.IntrospectionUtils;

import org.apache.coyote.ActionCode;
import org.apache.coyote.ActionHook;
import org.apache.coyote.Adapter;
import org.apache.coyote.InputBuffer;
import org.apache.coyote.OutputBuffer;
import org.apache.coyote.ProtocolHandler;

import org.apache.catalina.Connector;
import org.apache.catalina.Container;
import org.apache.catalina.HttpRequest;
import org.apache.catalina.HttpResponse;
import org.apache.catalina.Lifecycle;
import org.apache.catalina.LifecycleEvent;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.Logger;
import org.apache.catalina.Request;
import org.apache.catalina.Response;
import org.apache.catalina.Service;
import org.apache.catalina.net.DefaultServerSocketFactory;
import org.apache.catalina.net.ServerSocketFactory;
import org.apache.catalina.util.LifecycleSupport;
import org.apache.catalina.util.StringManager;


/**
 * Implementation of a Coyote connector for Tomcat 4.x.
 *
 * @author Craig R. McClanahan
 * @author Remy Maucherat
 * @version $Revision: 1.20.2.1 $ $Date: 2003/02/09 22:30:02 $
 */


public final class CoyoteConnector
    implements Connector, Lifecycle {


    // ----------------------------------------------------- Instance Variables


    /**
     * The <code>Service</code> we are associated with (if any).
     */
    private Service service = null;


    /**
     * The accept count for this Connector.
     */
    private int acceptCount = 10;


    /**
     * The IP address on which to bind, if any.  If <code>null</code>, all
     * addresses on the server will be bound.
     */
    private String address = null;


    /**
     * The input buffer size we should create on input streams.
     */
    private int bufferSize = 2048;


    /**
     * The Container used for processing requests received by this Connector.
     */
    protected Container container = null;


    /**
     * The set of processors that have ever been created.
     */
    private Vector created = new Vector();


    /**
     * The current number of processors that have been created.
     */
    private int curProcessors = 0;


    /**
     * The debugging detail level for this component.
     */
    private int debug = 0;


    /**
     * The "enable DNS lookups" flag for this Connector.
     */
    private boolean enableLookups = false;


    /**
     * The server socket factory for this component.
     */
    private ServerSocketFactory factory = null;


    /**
     * Descriptive information about this Connector implementation.
     */
    private static final String info =
        "org.apache.coyote.tomcat4.CoyoteConnector2/1.0";


    /**
     * The lifecycle event support for this component.
     */
    protected LifecycleSupport lifecycle = new LifecycleSupport(this);


    /**
     * The minimum number of processors to start at initialization time.
     */
    protected int minProcessors = 5;


    /**
     * The maximum number of processors allowed, or <0 for unlimited.
     */
    private int maxProcessors = 20;


    /**
     * Linger value on the incoming connection.
     * Note : a value inferior to 0 means no linger.
     */
    private int connectionLinger = Constants.DEFAULT_CONNECTION_LINGER;


    /**
     * Timeout value on the incoming connection.
     * Note : a value of 0 means no timeout.
     */
    private int connectionTimeout = Constants.DEFAULT_CONNECTION_TIMEOUT;


    /**
     * The port number on which we listen for requests.
     */
    private int port = 8080;


    /**
     * The server name to which we should pretend requests to this Connector
     * were directed.  This is useful when operating Tomcat behind a proxy
     * server, so that redirects get constructed accurately.  If not specified,
     * the server name included in the <code>Host</code> header is used.
     */
    private String proxyName = null;


    /**
     * The server port to which we should pretent requests to this Connector
     * were directed.  This is useful when operating Tomcat behind a proxy
     * server, so that redirects get constructed accurately.  If not specified,
     * the port number specified by the <code>port</code> property is used.
     */
    private int proxyPort = 0;


    /**
     * The redirect port for non-SSL to SSL redirects.
     */
    private int redirectPort = 443;


    /**
     * The request scheme that will be set on all requests received
     * through this connector.
     */
    private String scheme = "http";


    /**
     * The secure connection flag that will be set on all requests received
     * through this connector.
     */
    private boolean secure = false;


    /**
     * The string manager for this package.
     */
    private StringManager sm =
        StringManager.getManager(Constants.Package);


    /**
     * Has this component been initialized yet?
     */
    private boolean initialized = false;


    /**
     * Has this component been started yet?
     */
    private boolean started = false;


    /**
     * The shutdown signal to our background thread
     */
    private boolean stopped = false;


    /**
     * The background thread.
     */
    private Thread thread = null;


    /**
     * Use TCP no delay ?
     */
    private boolean tcpNoDelay = true;


    /**
     * Flag to disable setting a seperate time-out for uploads.
     * If <code>true</code>, then the <code>timeout</code> parameter is
     * ignored.  If <code>false</code>, then the <code>timeout</code>
     * parameter is used to control uploads.
     */
    private boolean disableUploadTimeout = false;

    /**
     * Maximum number of Keep-Alive requests to honor per connection.
     */
    private int maxKeepAliveRequests = 100;


    /**
     * Compression value.
     */
    private String compression = "off";


    /**
     * Coyote Protocol handler class name.
     * Defaults to the Coyote HTTP/1.1 protocolHandler.
     */
    private String protocolHandlerClassName = 
        "org.apache.coyote.http11.Http11Protocol";


    /**
     * Use URI validation for Tomcat 4.0.x.
     */
    private boolean useURIValidationHack = true;


    /**
     * Coyote protocol handler.
     */
    private ProtocolHandler protocolHandler = null;


    /**
     * Coyote adapter.
     */
    private Adapter adapter = null;


    // ------------------------------------------------------------- Properties


    /**
     * Return the <code>Service</code> with which we are associated (if any).
     */
    public Service getService() {

        return (this.service);

    }


    /**
     * Set the <code>Service</code> with which we are associated (if any).
     *
     * @param service The service that owns this Engine
     */
    public void setService(Service service) {

        this.service = service;

    }


    /**
     * Return the connection linger for this Connector.
     */
    public int getConnectionLinger() {

        return (connectionLinger);

    }


    /**
     * Set the connection linger for this Connector.
     *
     * @param count The new connection linge
     */
    public void setConnectionLinger(int connectionLinger) {

        this.connectionLinger = connectionLinger;

    }


    /**
     * Return the connection timeout for this Connector.
     */
    public int getConnectionTimeout() {

        return (connectionTimeout);

    }


    /**
     * Set the connection timeout for this Connector.
     *
     * @param count The new connection timeout
     */
    public void setConnectionTimeout(int connectionTimeout) {

        this.connectionTimeout = connectionTimeout;

    }


    /**
     * Return the accept count for this Connector.
     */
    public int getAcceptCount() {

        return (acceptCount);

    }


    /**
     * Set the accept count for this Connector.
     *
     * @param count The new accept count
     */
    public void setAcceptCount(int count) {

        this.acceptCount = count;

    }


    /**
     * Return the bind IP address for this Connector.
     */
    public String getAddress() {

        return (this.address);

    }


    /**
     * Set the bind IP address for this Connector.
     *
     * @param address The bind IP address
     */
    public void setAddress(String address) {

        this.address = address;

    }


    /**
     * Is this connector available for processing requests?
     */
    public boolean isAvailable() {

        return (started);

    }


    /**
     * Return the input buffer size for this Connector.
     */
    public int getBufferSize() {

        return (this.bufferSize);

    }


    /**
     * Set the input buffer size for this Connector.
     *
     * @param bufferSize The new input buffer size.
     */
    public void setBufferSize(int bufferSize) {

        this.bufferSize = bufferSize;

    }


    /**
     * Return the Container used for processing requests received by this
     * Connector.
     */
    public Container getContainer() {

        return (container);

    }


    /**
     * Set the Container used for processing requests received by this
     * Connector.
     *
     * @param container The new Container to use
     */
    public void setContainer(Container container) {

        this.container = container;

    }


    /**
     * Get the value of compression.
     */
    public String getCompression() {

        return (compression);

    }


    /**
     * Set the value of compression.
     * 
     * @param compression The new compression value, which can be "on", "off"
     * or "force"
     */
    public void setCompression(String compression) {

        this.compression = compression;

    }


    /**
     * Return the current number of processors that have been created.
     */
    public int getCurProcessors() {

        return (curProcessors);

    }


    /**
     * Return the debugging detail level for this component.
     */
    public int getDebug() {

        return (debug);

    }


    /**
     * Set the debugging detail level for this component.
     *
     * @param debug The new debugging detail level
     */
    public void setDebug(int debug) {

        this.debug = debug;

    }


    /**
     * Return the "enable DNS lookups" flag.
     */
    public boolean getEnableLookups() {

        return (this.enableLookups);

    }


    /**
     * Set the "enable DNS lookups" flag.
     *