asmxwebservicebasicauthentication

http://stackoverflow.com/questions/10861568/asmx-web-service-basic-authentication

//-----------------------------------------------------

public class BasicAuthHttpModule:IHttpModule
{
    voidIHttpModule.Init(HttpApplication context)
    {
        context.AuthenticateRequest+=newEventHandler(OnAuthenticateRequest);
    }

    voidOnAuthenticateRequest(object sender,EventArgs e)
    {
        string header =HttpContext.Current.Request.Headers["Authorization"];

        if(header !=null&& header.StartsWith("Basic"))  //if has header
        {
            string encodedUserPass = header.Substring(6).Trim();  //remove the "Basic"
            Encoding encoding =Encoding.GetEncoding("iso-8859-1");
            string userPass = encoding.GetString(Convert.FromBase64String(encodedUserPass));
            string[] credentials = userPass.Split(':');
            string username = credentials[0];
            string password = credentials[1];

            if(!MyUserValidator.Validate(username, password))
            {
                HttpContext.Current.Response.StatusCode=401;
                HttpContext.Current.Response.End();
            }
        }
        else
        {
            //send request header for the 1st round
            HttpContext context =HttpContext.Current;
            context.Response.StatusCode=401;
            context.Response.AddHeader("WWW-Authenticate",String.Format("Basic realm=\"{0}\"",string.Empty));
        }
    }

    voidIHttpModule.Dispose()
    {
    }
}

staticvoidMain(string[] args)
{
    var proxy =newService1.Service1()
                    {
                        Credentials=newNetworkCredential("user1","p@ssw0rd"),
                        PreAuthenticate=true
                    };
    try
    {
        var result = proxy.HelloWorld();
        Console.WriteLine(result);
    }
    catch(Exception e)
    {
        Console.WriteLine(e.Message);
    }
    Console.ReadKey();
}

The fiddler results:

POST http://www.mywebsite.com/Service1.asmx HTTP/1.1
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; MS Web Services Client Protocol 2.0.50727.4927)
VsDebuggerCausalityData: uIDPo+drc57U77xGu/ZaOdYvw6IAAAAA8AjKQNpkV06FEWDEs2Oja2C+h3kM7dlDvnFfE1VlIIIACQAA
Content-Type: text/xml; charset=utf-8
SOAPAction: "http://www.mywebsite.com/HelloWorld"
Host: www.mywebsite.com
Content-Length: 291
Expect: 100-continue
Connection: Keep-Alive

<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><HelloWorld xmlns="http://www.mywebsite.com/" /></soap:Body></soap:Envelope>
HTTP/1.1 401 Unauthorized
Cache-Control: private
Content-Type: text/html
Server: Microsoft-IIS/7.5
WWW-Authenticate: Basic realm=""
X-AspNet-Version: 4.0.30319
WWW-Authenticate: Basic realm="www.mywebsite.com"
X-Powered-By: ASP.NET
Date: Sun, 03 Jun 2012 07:14:40 GMT
Content-Length: 1293
------------------------------------------------------------------

POST http://www.mywebsite.com/Service1.asmx HTTP/1.1
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; MS Web Services Client Protocol 2.0.50727.4927)
VsDebuggerCausalityData: uIDPo+drc57U77xGu/ZaOdYvw6IAAAAA8AjKQNpkV06FEWDEs2Oja2C+h3kM7dlDvnFfE1VlIIIACQAA
Content-Type: text/xml; charset=utf-8
SOAPAction: "http://www.mywebsite.com/HelloWorld"
Authorization: Basic dXNlcjE6cEBzc3cwcmQ=
Host: www.mywebsite.com
Content-Length: 291
Expect: 100-continue

<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><HelloWorld xmlns="http://www.mywebsite.com/" /></soap:Body></soap:Envelope>
HTTP/1.1 401 Unauthorized
Content-Type: text/html
Server: Microsoft-IIS/7.5
WWW-Authenticate: Basic realm="www.mywebsite.com"
X-Powered-By: ASP.NET
Date: Sun, 03 Jun 2012 07:14:41 GMT
Content-Length: 1293

//---------------------------------------------------------------

publicclassBasicAuthHttpModule:IHttpModule
{
    publicvoidDispose()
    {
    }

    public void Init(HttpApplication application)
    { application.AuthenticateRequest+=new
            EventHandler(this.OnAuthenticateRequest);
        application.EndRequest+=new
            EventHandler(this.OnEndRequest);
    }

    public void OnAuthenticateRequest(object source,EventArgs
                        eventArgs)
    {
        HttpApplication app =(HttpApplication)source;

        string authHeader = app.Request.Headers["Authorization"];
        if(!string.IsNullOrEmpty(authHeader))
        {
            string authStr = app.Request.Headers["Authorization"];

            if(authStr ==null|| authStr.Length==0)
            {
                return;
            }

            authStr = authStr.Trim();
            if(authStr.IndexOf("Basic",0)!=0)
            {
                return;
            }

            authStr = authStr.Trim();

            string encodedCredentials = authStr.Substring(6);

            byte[] decodedBytes =
            Convert.FromBase64String(encodedCredentials);
            string s =newASCIIEncoding().GetString(decodedBytes);

            string[] userPass = s.Split(newchar[]{':'});
            string username = userPass[0];
            string password = userPass[1];

            if(!MyUserValidator.Validate(username, password))
            {
                DenyAccess(app);
                return;
            }
        }
        else
        {
            app.Response.StatusCode=401;
            app.Response.End();
        }
    }
    publicv oid OnEndRequest(object source,EventArgs eventArgs)
    {
        if(HttpContext.Current.Response.StatusCode==401)
        {
            HttpContext context =HttpContext.Current;
            context.Response.StatusCode=401;
            context.Response.AddHeader("WWW-Authenticate","Basic Realm");
        }
    }

    private void DenyAccess(HttpApplication app)
    {
        app.Response.StatusCode=401;
        app.Response.StatusDescription="Access Denied";
        app.Response.Write("401 Access Denied");
        app.CompleteRequest();
    }
}

//--------------------------------------------------------

 string url = "http://rasnote/wconnect/admin/wc.wc?_maintain~ShowStatus";
    HttpWebRequest req = HttpWebRequest.Create(url) as HttpWebRequest;

    string user = "ricks";
    string pwd = "secret";
    string domain = "www.west-wind.com";

    string auth = "Basic " + Convert.ToBase64String(System.Text.Encoding.Default.GetBytes(user + ":" + pwd));
    req.PreAuthenticate = true;
    req.Headers.Add("Authorization", auth);
    req.UserAgent = ": Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 (.NET CLR 4.0.20506)";
    WebResponse resp = req.GetResponse();
    resp.Close();

//-----------------------------------------------------