Question

I am trying to piece together a solution to a problem.
Basically I am using Silverlight 4 with C# 4.0 to access the world of warcraft armoury.
If anyone has done this – please oh please provide the working .net 4.0 code.

The code I am attempting to run is (e.Error contains a securtiy error):

private void button10_Click(object sender, RoutedEventArgs e)
        {
            string url = @"http://eu.wowarmory.com/guild-info.xml?r=Eonar&n=Gifted and Talented"; 
            WebClient wc = new WebClient();

            // HOW DO I ADD A USER AGENT STRING (RESPONSE MAY VARY (I.E. HTML VS XML) IF PAGE THINKS CALL IS NOT CAPABABLE OF SUPPORTING XML TRANSFORMATIONS) 
            //wc.ResponseHeaders["User-Agent"] = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)";

            wc.DownloadStringCompleted += new DownloadStringCompletedEventHandler(wc_DownloadStringCompleted);
            wc.DownloadStringAsync(new Uri(url));    
        }

        void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            if (e.Error == null)
            {
                string result = e.Result;

                XDocument ArmouryXML = XDocument.Parse(result);

                ShowGuildies(ArmouryXML);
            }
            else
            {
                MessageBox.Show("Something is complaining about security but not sure what!");
            }
        } 

Notes:

1. C# 4.0
2. The armoury is an XML file – but i believe it reverts to html should the request not be from a browser that supports XML transformation. But i don’t think I am getting this far.
3. The armoury has a cross domain policy file on it – this may be the cause of the error (not sure!
4. I have uploaded to a production server
5. I am testing it locally using IIS website
6. I am going insane!
7. Websites have made the suggestion that this problem can be overcome by creating a WebProxy – but I haven’t the first clue how to do this.

It would be great if someone could take on this challenge and show us all that it is possible. I’d prefer a non-proxy solution first, then try a proxy.

The error details:

e.Error = {System.Security.SecurityException —> System.Security.SecurityException: Security error.
at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult)
at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClass5.

Any intelligent master coders out there who can solve this in their sleep?

Thanks if you can help.

Answer 1

SOLVED – used a WCF service to act as a proxy due to cross domain security and header modification restrictions. Thanks for all the advice.