Name: skT45625 Date: 06/13/2000


java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

and

java version "1.3.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b07)
Java HotSpot(TM) Client VM (build 1.3.0beta-b04, mixed mode)

Compile the following code:

import java.net.*;
import java.io.*;

public class KeepAlive
{
   public static final void main(String args[])
   {
      try {
         URL url = new URL("http://server/cgi-bin/dump.pl");
         for(int i = 0; i < 10; i++) {
            System.out.println("++++++++++++++++++++++++++++++++++++++++");
            System.out.println("Request " + i);
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            conn.setRequestProperty("Content-type","magnus-internal/praja");
            conn.setRequestProperty("Content-Encoding","java-serialized");
            conn.setUseCaches(false);
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("POST");
            conn.connect();
         
            PrintStream os = new PrintStream(conn.getOutputStream());
            os.println("Hello=world");
            
            os.flush();
            os.close();

            BufferedReader reader = new BufferedReader(new InputStreamReader
(conn.getInputStream()));
            String line;
            while((line = reader.readLine()) != null) {
               System.out.println(line);
            }
            reader.close();
            conn.disconnect();
         }
      }
      catch(Exception e) {
         e.printStackTrace();
      }
   }
}

Install the following CGI on the server (Apache 1.3.12 on Linux):

#!/usr/bin/perl

print "Content-Type: text/html\r\n";
print "\r\n";
print "\r\n";
print "Content type = ", $ENV{'CONTENT_TYPE'}, "\n";
exit 0;

Run the client code. You get the following results:

++++++++++++++++++++++++++++++++++++++++
Request 0

Content type = magnus-internal/praja
++++++++++++++++++++++++++++++++++++++++
Request 1

Content type = application/x-www-form-urlencoded
++++++++++++++++++++++++++++++++++++++++
Request 2

Content type = magnus-internal/praja
++++++++++++++++++++++++++++++++++++++++
Request 3

Content type = application/x-www-form-urlencoded
++++++++++++++++++++++++++++++++++++++++
Request 4

Content type = magnus-internal/praja
++++++++++++++++++++++++++++++++++++++++
Request 5

Content type = application/x-www-form-urlencoded
++++++++++++++++++++++++++++++++++++++++
Request 6

Content type = magnus-internal/praja
++++++++++++++++++++++++++++++++++++++++
Request 7

Content type = application/x-www-form-urlencoded
++++++++++++++++++++++++++++++++++++++++
Request 8

Content type = magnus-internal/praja
++++++++++++++++++++++++++++++++++++++++
Request 9

Content type = application/x-www-form-urlencoded

Note that the content-type which was set is lost every alternate request.

Now try the same code with a HTTP server that doesn't support keep-alive (e.g.,
the one which comes with TomCat 3.1). It works as expected (no www-form-url-
encoded).

Or, try with Apache, but with disconnect() commented out. It works as expected
again.

TCP dump shows that with disconnect(), the client opens a new socket connection
to the server every time. Without disconnect(), the same socket is reused.

Please don't close this bug like you have others reporting similar problems.
Yes, there are lost headers. And, yes, Java loses it (I can verify this with
tcpdump). That sounds like a bug to me.
(Review ID: 105912)
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