regarding Http response header and response commited

[Brij Garg]

HTTP response consists of the status line, one or
more headers, a blank line, and the actual document, in that order

and

In HTTP version 2.2 with buffering enabled, you can
set headers until the buffer fills up and is actually sent to the client.

Keep these two point in mind,
my code is

 
package myservlets;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
 
public class firstServlet extends HttpServlet
{
String text;
String url;
public void doPost(HttpServletRequest request, HttpServletResponse response) throws 
 
ServletException , IOException
{
PrintWriter out = response.getWriter();
out.write("garg");
out.flush();
response.setContentType("text/html");
}
}

In this code I am setting response header after response has been committed.Therefore this code should give IllegalStateException.

But i am getting output as "garg".

Need your comments on my understanding of this concept.
Thanks
[ August 21, 2008: Message edited by: Bear Bibeault ]

[David O'Meara]

You're assumption is that the setContentType method will throw the Exception if the reponse is already commited, but the API says otherwise (namely)

Sets the content type of the response being sent to the client, if the response has not been committed yet.

Therefore the content type just gets missed, but no error is reported.

[Ulf Dittmer]

By the way, there is no "HTTP 2.2"; the latest HTTP version is 1.1. Do you mean Servlet API version? If so, that's been obsolete for many years; we're at 2.5 now.
[ August 21, 2008: Message edited by: Ulf Dittmer ]