Wolfgang,
Attached is a small program to test things out with sample output from
Kaffe and Blackdown java.
I've added a test-case for another small bug with the .getHeaderFieldKey()
method; it's throwing exceptions that it shouldn't.
best,
rhw
On Fri, 8 Jul 2005, Wolfgang Baer wrote:
> Hi Robert,
>
> thanks for your bug report - can you write a small testcase so I can
> test it against the kaffe cvs version if it is maybe already solved.
>
> There was a lot of bug fixes on the URL/HTTP stuff the last weeks in
> gnu classpath.
>
> If not I will forward the bug report upstream.
>
> Thanks,
>
> Wolfgang
>
/***
* HTTPBugDemo.java
* @author [EMAIL PROTECTED]
* @author Robert H. Warren
* With thanks to [EMAIL PROTECTED]
*
* Problem: java.net.HttpURLConnection (or
* gnu.java.net.protocol.http.HTTPURLConnection) is not handling gzip'ed
* connections properly and reporting the gzipped content length all the
* way to the InputStream. This is a problem because HttpURLConnection is
* decompressing the stream along the way but still using the compressed
* length to drive the read() and available() methods. The resulting data
* is therefore truncated about halfway.
*
* Minor Problem: Method getHeaderFieldKey(int n) is throwing
* java.util.NoSuchElementException when an invalid header number is
* requested. According to the API, it should return a null instead.
*
* ----- Sample code and output follows -----
*
* For reference:
*
* [EMAIL PROTECTED]:~$ lynx -source http://www.gutenberg.org/etext/11751 | wc
-c
* 9122
*
* With kaffe:
*
* [EMAIL PROTECTED]:~$ kaffe -version
* Kaffe Virtual Machine
*
* Copyright (c) 1996-2004 Kaffe.org project contributors (please see the
* source code for a full list of contributors). All rights reserved. Portions
* Copyright (c) 1996-2002 Transvirtual Technologies, Inc.
*
* The Kaffe virtual machine is free software, licensed under the terms of
* the GNU General Public License. Kaffe.org is a an independent, free
software
* community project, not directly affiliated with Transvirtual Technologies,
* Inc. Kaffe is a Trademark of Transvirtual Technologies, Inc. Kaffe comes
* with ABSOLUTELY NO WARRANTY.
*
* Engine: Just-in-time v3 Version: 1.1.5 Java Version: 1.1
*
*
*
*
* [EMAIL PROTECTED]:~$ kaffe HTTPBugDemo
* Response code is 200
* Content type (classfile) :text/html; charset=UTF-8
* Content encoding (classfile): gzip
* Content length (classfile) : 3006
* Key [Date] value [Tue, 12 Jul 2005 20:10:45 GMT]
* Key [Server] value [Apache/1.3.33 (Unix) PHP/4.3.11]
* Key [Cache-Control] value [max-age=90000]
* Key [Expires] value [Wed, 13 Jul 2005 21:10:45 GMT]
* Key [X-Powered-By] value [PHP/4.3.11]
* Key [Content-Encoding] value [gzip]
* Key [Vary] value [Accept-Encoding]
* Key [Content-Length] value [3006]
* Key [Connection] value [close]
* Key [Content-Type] value [text/html; charset=UTF-8]
* java.util.NoSuchElementException
* at java.util.LinkedHashMap$1.next (LinkedHashMap.java:475)
* at gnu.java.net.protocol.http.HTTPURLConnection.
* getHeaderFieldKey (HTTPURLConnection.java:547)
* at HTTPBugDemo.main (HTTPBugDemo.java:34)
* Data has 3006 bytes.
*
*
* Using the blackdown java:
*
* [EMAIL PROTECTED]:~$ java -version
* java version "1.4.2-02"
* Java(TM) 2 Runtime Environment, Standard Edition (build Blackdown-1.4.2-02)
* Java HotSpot(TM) Client VM (build Blackdown-1.4.2-02, mixed mode)
*
*
* [EMAIL PROTECTED]:~$ java HTTPBugDemo
* Response code is 200
* Content type (classfile) :text/html; charset=UTF-8
* Content encoding (classfile): null
* Content length (classfile) : 9122
* Key [Date] value [Tue, 12 Jul 2005 20:13:30 GMT]
* Key [Server] value [Apache/1.3.33 (Unix) PHP/4.3.11]
* Key [Cache-Control] value [max-age=90000]
* Key [Expires] value [Wed, 13 Jul 2005 21:13:30 GMT]
* Key [X-Powered-By] value [PHP/4.3.11]
* Key [Vary] value [Accept-Encoding]
* Key [Content-Length] value [9122]
* Key [Connection] value [close]
* Key [Content-Type] value [text/html; charset=UTF-8]
* Data has 9122 bytes.
*
*
*
*
*
*
*
***/
public class HTTPBugDemo {
public static void main(String argv[]) throws java.lang.Exception {
java.net.URL URL_TEXT = new
java.net.URL("http://www.gutenberg.org/etext/11751";);
byte[] StoredHTMLData = null;
byte[] CurrentHTMLData = null;
java.net.HttpURLConnection WebServerInfo = null;
java.io.InputStream WebServerData = null;
WebServerInfo = (java.net.HttpURLConnection) URL_TEXT.openConnection();
WebServerInfo.setRequestProperty("Connection", "close");
WebServerInfo.setFollowRedirects(true);
int response_code = WebServerInfo.getResponseCode();
System.err.println("Response code is " + response_code);
if (response_code==404) {
throw (new java.lang.Exception("Page Missing."));
}
WebServerData = WebServerInfo.getInputStream();
int TotalBytesRead =0;
CurrentHTMLData = new byte[0];
int BytesToRead = WebServerData.available();
System.err.println("Content type (classfile)
:"+WebServerInfo.getContentType());
System.err.println("Content encoding (classfile):
"+WebServerInfo.getContentEncoding());
System.err.println("Content length (classfile) :
"+WebServerInfo.getContentLength());
String HeaderName = new String();
int HeaderNumber=1;
while (HeaderName != null) {
try {
HeaderName = WebServerInfo.getHeaderFieldKey(HeaderNumber);
} catch (java.lang.Exception hn) {
HeaderName = null;
hn.printStackTrace();
}
if (HeaderName != null) {
String HeaderValue = WebServerInfo.getHeaderField(HeaderName);
System.err.println("Key ["+HeaderName+"] value ["+HeaderValue+"]");
HeaderNumber++;
}//if
}//while
byte[] ReadBuffer = null;
int BlockSize = 4096;
while (BytesToRead>=0) {
BytesToRead = BlockSize;
ReadBuffer = new byte[BlockSize];
BytesToRead = WebServerData.read(ReadBuffer);
if (BytesToRead>=0) {
TotalBytesRead = TotalBytesRead + BytesToRead;
byte[] TempBuffer = new byte[CurrentHTMLData.length+BytesToRead];
java.lang.System.arraycopy(CurrentHTMLData,0,TempBuffer,0,CurrentHTMLData.length);
java.lang.System.arraycopy(ReadBuffer,0,TempBuffer,(CurrentHTMLData.length),BytesToRead);
CurrentHTMLData=TempBuffer;
}
}//while
WebServerData.close();
WebServerInfo.disconnect();
System.out.println("Data has "+CurrentHTMLData.length+" bytes.");
}//main
}//class
