/*
* Created on May 26, 2004
*
* Paros and its related class files.
*
* Paros is an HTTP/HTTPS proxy for assessing web application security.
* Copyright (C) 2003-2004 Chinotec Technologies Company
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the Clarified Artistic License
* as published by the Free Software Foundation.
*
* 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
* Clarified Artistic License for more details.
*
* You should have received a copy of the Clarified Artistic License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// ZAP: 2012/03/15 Added the method getProxyListenerOrder.
// ZAP: 2012/06/17 Documented the interface.
// ZAP: 2012/12/27 Extend from ArrangeableListener.
// ZAP: 2016/09/22 JavaDoc tweaks
package org.parosproxy.paros.core.proxy;
import org.parosproxy.paros.network.HttpMessage;
/**
* A listener that will be notified when a new request is ready to be forwarded
* to the server and when a new response is ready to be forwarded to the client.
*
* @see OverrideMessageProxyListener
* @see ConnectRequestProxyListener
*/
// ZAP: Changed the JavaDoc.
public interface ProxyListener extends ArrangeableProxyListener {
/**
* Notifies the listener that a new request was received from the client and
* is ready to be forwarded to the server.
* <p>
* The {@code HttpMessage} {@code msg} can be modified (only the request
* should be modified). If the return value is {@code true} the message
* <i>may be</i> forwarded and the following listeners will be notified, if
* the value is {@code false} the message <i>will not</i> be forwarded and
* no more listeners will be notified.
* <p>
* <strong>Note:</strong> In the presence of more than one listener there
* are <i>no</i> guarantees that:
* <ul>
* <li>the {@code HttpMessage} {@code msg} is equal to the one forwarded to
* the server, as the following listeners may modify it;</li>
* <li>the message will really be forwarded to the server, even if the
* return value is {@code true}, as the following listeners may return
* {@code false}.</li>
* </ul>
*
* @param msg
* the {@code HttpMessage} that may be forwarded to the server
* @return {@code true} if the message should be forwarded to the server,
* {@code false} otherwise
*/
// ZAP: Added the JavaDoc.
boolean onHttpRequestSend(HttpMessage msg);
/**
* Notifies the listener that a new response was received from the server
* and is ready to be forwarded to the client.
* <p>
* The {@code HttpMessage} {@code msg} can be modified (only the response
* should be modified). If the return value is {@code true} the message
* <i>may be</i> forwarded and the following listeners will be notified, if
* the value is {@code false} the message <i>will not</i> be forwarded and
* no more listeners will be notified.
* <p>
* <strong>Note:</strong> In the presence of more than one listener there
* are <i>no</i> guarantees that:
* <ul>
* <li>the {@code HttpMessage} {@code msg} is equal to the one forwarded to
* the client, as the following listeners may modify it;</li>
* <li>the message will really be forwarded to the client, even if the
* return value is {@code true}, as the following listeners may return
* {@code false}.</li>
* </ul>
*
* @param msg
* the {@code HttpMessage} that may be forwarded to the client
* @return {@code true} if the message should be forwarded to the client,
* {@code false} otherwise
*/
// ZAP: Added the JavaDoc.
boolean onHttpResponseReceive(HttpMessage msg);
}