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* $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0.1/httpcore/src/main/java/org/apache/http/protocol/RequestDate.java $
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* $Date: 2009-02-14 18:12:18 +0100 (Sat, 14 Feb 2009) $
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* ====================================================================
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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package org.apache.http.protocol;
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import java.io.IOException;
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import org.apache.http.HttpException;
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import org.apache.http.HttpRequest;
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import org.apache.http.HttpEntityEnclosingRequest;
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import org.apache.http.HttpRequestInterceptor;
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* RequestDate interceptor is responsible for adding <code>Date</code> header
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* to the outgoing requests This interceptor is optional for client side
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* protocol processors.
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* @version $Revision: 744532 $
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public class RequestDate implements HttpRequestInterceptor {
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private static final HttpDateGenerator DATE_GENERATOR = new HttpDateGenerator();
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public RequestDate() {
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public void process(final HttpRequest request, final HttpContext context)
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throws HttpException, IOException {
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if (request == null) {
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throw new IllegalArgumentException
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("HTTP request may not be null.");
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if ((request instanceof HttpEntityEnclosingRequest) &&
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!request.containsHeader(HTTP.DATE_HEADER)) {
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String httpdate = DATE_GENERATOR.getCurrentDate();
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request.setHeader(HTTP.DATE_HEADER, httpdate);