author | chegar |
Fri, 16 Sep 2011 12:09:04 -0700 | |
changeset 10596 | 39b3a979e600 |
parent 9775 | 1b128726e887 |
permissions | -rw-r--r-- |
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/* |
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7090158: Networking Libraries don't build with javac -Werror
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* Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.net.www; |
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import java.net.URL; |
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import java.util.*; |
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/** |
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* A class to represent an active connection to an object |
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* represented by a URL. |
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* @author James Gosling |
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*/ |
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abstract public class URLConnection extends java.net.URLConnection { |
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/** The URL that it is connected to */ |
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private String contentType; |
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private int contentLength = -1; |
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protected MessageHeader properties; |
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/** Create a URLConnection object. These should not be created directly: |
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instead they should be created by protocol handers in response to |
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URL.openConnection. |
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@param u The URL that this connects to. |
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*/ |
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public URLConnection (URL u) { |
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super(u); |
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properties = new MessageHeader(); |
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} |
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/** Call this routine to get the property list for this object. |
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* Properties (like content-type) that have explicit getXX() methods |
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* associated with them should be accessed using those methods. */ |
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public MessageHeader getProperties() { |
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return properties; |
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} |
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/** Call this routine to set the property list for this object. */ |
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public void setProperties(MessageHeader properties) { |
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this.properties = properties; |
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} |
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public void setRequestProperty(String key, String value) { |
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if(connected) |
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throw new IllegalAccessError("Already connected"); |
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if (key == null) |
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throw new NullPointerException ("key cannot be null"); |
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properties.set(key, value); |
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} |
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/** |
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* The following three methods addRequestProperty, getRequestProperty, |
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* and getRequestProperties were copied from the superclass implementation |
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* before it was changed by CR:6230836, to maintain backward compatibility. |
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*/ |
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public void addRequestProperty(String key, String value) { |
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if (connected) |
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throw new IllegalStateException("Already connected"); |
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if (key == null) |
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throw new NullPointerException ("key is null"); |
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} |
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public String getRequestProperty(String key) { |
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if (connected) |
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throw new IllegalStateException("Already connected"); |
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return null; |
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} |
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public Map<String,List<String>> getRequestProperties() { |
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if (connected) |
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throw new IllegalStateException("Already connected"); |
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return Collections.emptyMap(); |
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} |
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public String getHeaderField(String name) { |
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try { |
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getInputStream(); |
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} catch (Exception e) { |
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return null; |
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} |
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return properties == null ? null : properties.findValue(name); |
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} |
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/** |
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* Return the key for the nth header field. Returns null if |
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* there are fewer than n fields. This can be used to iterate |
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* through all the headers in the message. |
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*/ |
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public String getHeaderFieldKey(int n) { |
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try { |
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getInputStream(); |
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} catch (Exception e) { |
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return null; |
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} |
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MessageHeader props = properties; |
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return props == null ? null : props.getKey(n); |
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} |
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/** |
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* Return the value for the nth header field. Returns null if |
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* there are fewer than n fields. This can be used in conjunction |
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* with getHeaderFieldKey to iterate through all the headers in the message. |
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*/ |
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public String getHeaderField(int n) { |
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try { |
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getInputStream(); |
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} catch (Exception e) { |
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return null; |
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} |
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MessageHeader props = properties; |
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return props == null ? null : props.getValue(n); |
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} |
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/** Call this routine to get the content-type associated with this |
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* object. |
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*/ |
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public String getContentType() { |
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if (contentType == null) |
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contentType = getHeaderField("content-type"); |
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if (contentType == null) { |
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String ct = null; |
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try { |
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ct = guessContentTypeFromStream(getInputStream()); |
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} catch(java.io.IOException e) { |
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} |
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String ce = properties.findValue("content-encoding"); |
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if (ct == null) { |
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ct = properties.findValue("content-type"); |
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if (ct == null) |
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if (url.getFile().endsWith("/")) |
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ct = "text/html"; |
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else |
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ct = guessContentTypeFromName(url.getFile()); |
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} |
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/* |
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* If the Mime header had a Content-encoding field and its value |
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* was not one of the values that essentially indicate no |
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* encoding, we force the content type to be unknown. This will |
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* cause a save dialog to be presented to the user. It is not |
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* ideal but is better than what we were previously doing, namely |
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* bringing up an image tool for compressed tar files. |
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*/ |
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if (ct == null || ce != null && |
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!(ce.equalsIgnoreCase("7bit") |
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|| ce.equalsIgnoreCase("8bit") |
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|| ce.equalsIgnoreCase("binary"))) |
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ct = "content/unknown"; |
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setContentType(ct); |
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} |
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return contentType; |
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} |
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/** |
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* Set the content type of this URL to a specific value. |
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* @param type The content type to use. One of the |
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* content_* static variables in this |
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* class should be used. |
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* eg. setType(URL.content_html); |
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*/ |
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public void setContentType(String type) { |
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contentType = type; |
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properties.set("content-type", type); |
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} |
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/** Call this routine to get the content-length associated with this |
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* object. |
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*/ |
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public int getContentLength() { |
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try { |
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getInputStream(); |
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} catch (Exception e) { |
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return -1; |
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} |
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int l = contentLength; |
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if (l < 0) { |
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try { |
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l = Integer.parseInt(properties.findValue("content-length")); |
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setContentLength(l); |
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} catch(Exception e) { |
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} |
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} |
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return l; |
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} |
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/** Call this routine to set the content-length associated with this |
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* object. |
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*/ |
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protected void setContentLength(int length) { |
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contentLength = length; |
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properties.set("content-length", String.valueOf(length)); |
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} |
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/** |
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* Returns true if the data associated with this URL can be cached. |
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*/ |
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public boolean canCache() { |
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return url.getFile().indexOf('?') < 0 /* && url.postData == null |
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REMIND */ ; |
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} |
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/** |
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* Call this to close the connection and flush any remaining data. |
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* Overriders must remember to call super.close() |
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*/ |
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public void close() { |
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url = null; |
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} |
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private static HashMap<String,Void> proxiedHosts = new HashMap<>(); |
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public synchronized static void setProxiedHost(String host) { |
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proxiedHosts.put(host.toLowerCase(), null); |
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} |
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public synchronized static boolean isProxiedHost(String host) { |
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return proxiedHosts.containsKey(host.toLowerCase()); |
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} |
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} |