Setting Remote User Header

[Michael Schwartz]

I have an application that uses the 
javax.servlet.http.HttpServletRequest.getRemoteUser() method to pick up 
what user was previously authenticated. 
I wrote the code below, but request.getRemoteUser() in my JSP still 
returns null. Do I need to write a class that implements AuthScheme to do 
this?

                HttpClient client = new HttpClient();
                HttpMethod method = new GetMethod(url);
                method.setRequestHeader("REMOTE_USER", testUser);
                String responseBody = null;
                try{
                        client.executeMethod(method);
                        responseBody = method.getResponseBodyAsString();
                } catch (HttpException he) {
                        System.err.println(
                                "Http error connecting to '" + url + "'");
                        System.err.println(he.getMessage());
                } catch (IOException ioe) {
                        System.err.println(
                                "Unable to connect to '" + url + "'");
                }


Thanks in advance. 

Mike Schwartz