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1 /* 2 * $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/SimpleHttpConnectionManager.java,v 1.12 2003/05/12 02:42:42 mbecke Exp $ 3 * $Revision: 1.12 $ 4 * $Date: 2003/05/12 02:42:42 $ 5 * 6 * ==================================================================== 7 * 8 * The Apache Software License, Version 1.1 9 * 10 * Copyright (c) 2002-2003 The Apache Software Foundation. All rights 11 * reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in 22 * the documentation and/or other materials provided with the 23 * distribution. 24 * 25 * 3. The end-user documentation included with the redistribution, if 26 * any, must include the following acknowlegement: 27 * "This product includes software developed by the 28 * Apache Software Foundation (http://www.apache.org/)." 29 * Alternately, this acknowlegement may appear in the software itself, 30 * if and wherever such third-party acknowlegements normally appear. 31 * 32 * 4. The names "The Jakarta Project", "Commons", and "Apache Software 33 * Foundation" must not be used to endorse or promote products derived 34 * from this software without prior written permission. For written 35 * permission, please contact apache@apache.org. 36 * 37 * 5. Products derived from this software may not be called "Apache" 38 * nor may "Apache" appear in their names without prior written 39 * permission of the Apache Group. 40 * 41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * ==================================================================== 54 * 55 * This software consists of voluntary contributions made by many 56 * individuals on behalf of the Apache Software Foundation. For more 57 * information on the Apache Software Foundation, please see 58 * <http://www.apache.org/>;. 59 * 60 * [Additional notices, if required by prior licensing conditions] 61 * 62 */ 63 64 package org.apache.commons.httpclient; 65 66 import java.io.IOException; 67 import java.io.InputStream; 68 69 /*** 70 * A connection manager that provides access to a single HttpConnection. This 71 * manager makes no attempt to provide exclusive access to the contained 72 * HttpConnection. 73 * 74 * @author <a href="mailto:becke@u.washington.edu">Michael Becke</a> 75 * @author Eric Johnson 76 * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a> 77 * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a> 78 * @author Laura Werner 79 * 80 * @since 2.0 81 */ 82 public class SimpleHttpConnectionManager implements HttpConnectionManager { 83 84 /*** The http connection */ 85 private HttpConnection httpConnection; 86 87 /*** 88 * Constructor for SimpleHttpConnectionManager. 89 */ 90 public SimpleHttpConnectionManager() { 91 super(); 92 } 93 94 /*** 95 * @see HttpConnectionManager#getConnection(HostConfiguration) 96 */ 97 public HttpConnection getConnection(HostConfiguration hostConfiguration) { 98 return getConnection(hostConfiguration, 0); 99 } 100 101 /*** 102 * @see HttpConnectionManager#getConnection(HostConfiguration, long) 103 */ 104 public HttpConnection getConnection( 105 HostConfiguration hostConfiguration, long timeout) { 106 107 if (httpConnection == null) { 108 httpConnection = new HttpConnection(hostConfiguration); 109 } else { 110 111 // make sure the host and proxy are correct for this connection 112 // close it and set the values if they are not 113 if (!hostConfiguration.hostEquals(httpConnection) 114 || !hostConfiguration.proxyEquals(httpConnection)) { 115 116 if (httpConnection.isOpen()) { 117 httpConnection.close(); 118 } 119 120 httpConnection.setHost(hostConfiguration.getHost()); 121 httpConnection.setVirtualHost(hostConfiguration.getVirtualHost()); 122 httpConnection.setPort(hostConfiguration.getPort()); 123 httpConnection.setProtocol(hostConfiguration.getProtocol()); 124 httpConnection.setLocalAddress(hostConfiguration.getLocalAddress()); 125 126 httpConnection.setProxyHost(hostConfiguration.getProxyHost()); 127 httpConnection.setProxyPort(hostConfiguration.getProxyPort()); 128 } else { 129 finishLastResponse(httpConnection); 130 } 131 } 132 133 return httpConnection; 134 135 } 136 137 /*** 138 * @see HttpConnectionManager#releaseConnection(org.apache.commons.httpclient.HttpConnection) 139 */ 140 public void releaseConnection(HttpConnection conn) { 141 if (conn != httpConnection) { 142 throw new IllegalStateException("Unexpected close on a different connection."); 143 } 144 145 finishLastResponse(httpConnection); 146 } 147 148 /*** 149 * Since the same connection is about to be reused, make sure the 150 * previous request was completely processed, and if not 151 * consume it now. 152 * @param conn The connection 153 */ 154 static void finishLastResponse(HttpConnection conn) { 155 InputStream lastResponse = conn.getLastResponseInputStream(); 156 if (lastResponse != null) { 157 conn.setLastResponseInputStream(null); 158 try { 159 lastResponse.close(); 160 } catch (IOException ioe) { 161 //FIXME: badness - close to force reconnect. 162 conn.close(); 163 } 164 } 165 } 166 }

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