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2

How can I get the "Realm" message sent in the WWW-Authenticate header by a server requesting HTTP Basic authentication?

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closed as not a real question by minitech♦, DaveShaw, Kyle Trauberman, casperOne♦ Dec 9 '11 at 3:58

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.
1  
Reiterating the title doesn't really help. Can you please go into a bit more detail? –  minitech♦ Dec 8 '11 at 19:57
1  
it's clear enough . i get the help i want . thanks –  T4mer Dec 10 '11 at 0:23

2 Answers 2

up vote 5 down vote accepted

Not really sure what the issue the down-voters have with this question really is.

Here's the rough code to get the WWW-Authenticate header that contains the Basic authentication realm. Extracting the actual realm value from the header is left as an exercise, but should be quite straightforward (e.g. using regular expression).

public static string GetRealm(string url)
{
    var request = (HttpWebRequest)WebRequest.Create(url);
    try
    {
        using (request.GetResponse())
        {
            return null;
        }
    }
    catch (WebException e)
    {
        if (e.Response == null) return null;
        var auth = e.Response.Headers[HttpResponseHeader.WwwAuthenticate];
        if (auth == null) return null;
        // Example auth value:
        // Basic realm="Some realm"
        return ...Extract the value of "realm" here (with a regex perhaps)...
    }
}
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that's really help. thanks a lot –  T4mer Dec 10 '11 at 0:20
    
Yes. This is exactly what I needed. I use this to help determine whether or not I'm about to connect to a web service that is hosted in a Kerberos website. –  DaleyKD Apr 30 '13 at 19:44
up vote 1 down vote

I'm assuming you want to create a Web Request with Basic Authentication.

If that's the correct assumption, the following code is what you need:

// Create a request to a URL
WebRequest myReq = WebRequest.Create(url);
string usernamePassword = "username:password";
//Use the CredentialCache so we can attach the authentication to the request
CredentialCache mycache = new CredentialCache();
mycache.Add(new Uri(url), "Basic", new NetworkCredential("username", "password"));
myReq.Credentials = mycache;
myReq.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(usernamePassword)));
//Send and receive the response
WebResponse wr = myReq.GetResponse();
Stream receiveStream = wr.GetResponseStream();
StreamReader reader = new StreamReader(receiveStream, Encoding.UTF8);
string content = reader.ReadToEnd();
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