/*
 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/HttpRequestInterceptor.java $
 * $Revision: 618367 $
 * $Date: 2008-02-04 10:26:06 -0800 (Mon, 04 Feb 2008) $
 *
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * 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/>.
 *
 */

package org.apache.http;

import java.io.IOException;

import org.apache.http.protocol.HttpContext;


/**
 * Processes a request.
 * Provides the ability to process a request before it is sent
 * to the server or after it has received on the server side.
 *
 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
 *
 *
 * <!-- empty lines above to avoid 'svn diff' context problems -->
 * @version $Revision: 618367 $
 * 
 * @since 4.0
 */
public interface HttpRequestInterceptor {

    /**
     * Processes a request.
     * On the client side, this step is performed before the request is
     * sent to the server. On the server side, this step is performed
     * on incoming messages before the message body is evaluated.
     *
     * @param request   the request to preprocess
     * @param context   the context for the request
     *
     * @throws IOException      in case of an IO problem
     * @throws HttpException    in case of a protocol or other problem
     */
    void process(HttpRequest request, HttpContext context) 
        throws HttpException, IOException;
    
}