java proxy and web service authentication

Question

I am trying to access a web service that requires authentication but I am also behind a proxy which requires its own authentication. Able to get pass the proxy server as I can get results when the web service URL has no authentication. However when a web service requires authentication it simply does not work. i get the following error:

Exception in thread "main" java.net.ProtocolException: Server redirected too many  times

Here's my code below:

Authenticator auth = new Authenticator() {
    public PasswordAuthentication getPasswordAuthentication() {

    if(getRequestorType() == Authenticator.RequestorType.PROXY)
    {   //for proxy
      return (new PasswordAuthentication("user", "pass".toCharArray()));
    }
    else
    {  // for web service   
     return (new PasswordAuthentication("user2", "pass2".toCharArray())); 
     }
     }
     };
    Authenticator.setDefault(auth);
    SocketAddress addr = new
                         InetSocketAddress("proxy addr", port no);

    Proxy proxy = new Proxy(Proxy.Type.HTTP, addr);
    URL url = new URL("...");
    URLConnection yc = query.openConnection(proxy);
    BufferedReader in = new BufferedReader(
                            new InputStreamReader(
                            yc.getInputStream()));
    String inputLine;

    while ((inputLine = in.readLine()) != null) 
        System.out.println(inputLine);
    in.close();

This is my first question here. Any help would be much appreciated.

Your request call went into a redirect loop which can happen for a couple of reasons. To narrow them down can you please post the full HTTP request + response made to the service ? — Deepak Bala
– Deepak Bala, Commented Mar 31, 2013 at 15:59
@DeepakBala i am getting response code 302 and the redirect location is the same as the http request url. btw here's the HTTP request: api.datamarket.azure.com/Data.ashx/Bing/Search/… — user2229167
– user2229167, Commented Mar 31, 2013 at 18:43

Deepak Bala · Accepted Answer · 2013-03-31 19:30:17Z

2

The URLs are not the same. The request URL uses HTTP and the redirect URL uses HTTPS. What is probably happening is that the service sends the redirect request to the proxy, but the proxy still keeps requesting the HTTP URL over and over. Some proxies are known to exhibit this kind of behavior.

Switch to using HTTPS in the initial request. My HTTP calls to the server in question resulted in a redirect to HTTPS while the HTTPS calls resulted in a 401.

HTTP/1.1 401 The authorization type you provided is not supported. Only Basic and OAuth are supported

answered Mar 31, 2013 at 19:30

Deepak Bala

11.2k2 gold badges40 silver badges49 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user2229167 Over a year ago

tried your suggestion and it worked! can't thank you enough for that. i just looked back at the documentation for the server and it said to use https - i have no clue how i missed that. However the authorization seems to be working for me, i don't understand much about Basic and OAuth but will look it up to learn more. You saved a lot of my time. Cheers

Collectives™ on Stack Overflow

java proxy and web service authentication

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related