Getting a remote file with Mac OS behind NTLM proxy

Question

Hello
I need to get a file from a server, in this case using an Applet but I do not think it to be much pertinence to this case.
I have standard code that works perfectly in all OS except on Mac when it is behind a NTLM proxy.
The code is the following:
public String urlConnection(String url) {
          URL conf;
          StringBuilder sb = new StringBuilder();
          try {
               conf = new URL(url);
             URLConnection cc = conf.openConnection();
             BufferedReader in = new BufferedReader(
                                     new InputStreamReader(
                                     cc.getInputStream()));
             sb = new StringBuilder();
             String inputLine;
             while ((inputLine = in.readLine()) != null)
                 //System.out.println(inputLine);
                  sb.append(inputLine);
             in.close();       
          } catch (MalformedURLException e) {
               logger.error("MalformedURLException", e);
               return "Erro";
          } catch (IOException e) {
               logger.error("IOException", e);
               return "Erro";
        return sb.toString(); //Insted of returning bytes I do intend to return a string, but the return type of the method it is not the issue
     }As I stated, this code works perfectly for 95% of the users accessing the applet.
But behind the NTLM proxy I get a "liveconnect: Java: Returning a null"
Is there some other way to remotly access a file to see if I can go arround this situation?
Thank you
Brian

Answer 1

It is in fact HTTPs and not HTTP.
However, this does not has any problem in Windows and Linux, only on mac and only behind the NTLM proxy...
The stack trace is:
network: Connecting http://A/generic/javascript/java/lang/ObjectBeanInfo.class with proxy=DIRECT
network: Connecting http://A/generic/javascript/java/lang/ObjectBeanInfo.class with cookie "ASP.NET_SessionId=2kvabj55dmof3meqgsw2g445; Start=true;
liveconnect: Java: Obj is <applet.AppletTest>
liveconnect: Java: method is <public String urlConnection(String url)>
liveconnect: Java: method has 1 arguments.
liveconnect: JavaScript: caller and callee have same origin
liveconnect: JavaScript: default security policy = http://A/generic/javascript/index.htm
Ola
network: Connecting https://Cliente/config_final.xml with proxy=HTTP @ proxy.Cliente.pt/20.0.0.251:8080
network: Searching for authentication for protocol=https, siteName="proxy.Cliente.pt", port = 8080, scheme=ntlm, realm=, requestingURL="https://Cliente/config_final.xml, isProxy = yes
network: Found username=Cliente\utilizadorTeste
liveconnect: Java: Returning a null