1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/protocol/RequestConnControl.java $ 3 * $Revision: 496070 $ 4 * $Date: 2007-01-14 04:18:34 -0800 (Sun, 14 Jan 2007) $ 5 * 6 * ==================================================================== 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * distributed with this work for additional information 10 * regarding copyright ownership. The ASF licenses this file 11 * to you under the Apache License, Version 2.0 (the 12 * "License"); you may not use this file except in compliance 13 * with the License. You may obtain a copy of the License at 14 * 15 * http://www.apache.org/licenses/LICENSE-2.0 16 * 17 * Unless required by applicable law or agreed to in writing, 18 * software distributed under the License is distributed on an 19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20 * KIND, either express or implied. See the License for the 21 * specific language governing permissions and limitations 22 * under the License. 23 * ==================================================================== 24 * 25 * This software consists of voluntary contributions made by many 26 * individuals on behalf of the Apache Software Foundation. For more 27 * information on the Apache Software Foundation, please see 28 * <http://www.apache.org/>. 29 * 30 */ 31 32 package org.apache.http.protocol; 33 34 import java.io.IOException; 35 36 import org.apache.http.HttpException; 37 import org.apache.http.HttpRequest; 38 import org.apache.http.HttpRequestInterceptor; 39 40 /** 41 * A request interceptor that suggests connection keep-alive to the server. 42 * 43 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a> 44 * 45 * @version $Revision: 496070 $ 46 * 47 * @since 4.0 48 */ 49 public class RequestConnControl implements HttpRequestInterceptor { 50 51 public RequestConnControl() { 52 super(); 53 } 54 55 public void process(final HttpRequest request, final HttpContext context) 56 throws HttpException, IOException { 57 if (request == null) { 58 throw new IllegalArgumentException("HTTP request may not be null"); 59 } 60 if (!request.containsHeader(HTTP.CONN_DIRECTIVE)) { 61 // Default policy is to keep connection alive 62 // whenever possible 63 request.addHeader(HTTP.CONN_DIRECTIVE, HTTP.CONN_KEEP_ALIVE); 64 } 65 } 66 67 } 68
