' The following example uses the System, System.Net, 
' and System.IO namespaces.

Public Shared Sub RequestMutualAuth(ByVal resource As Uri)
    ' Create a new HttpWebRequest object for the specified resource.
    Dim request As WebRequest = CType(WebRequest.Create(resource), WebRequest)
    ' Request mutual authentication.
    request.AuthenticationLevel = AuthenticationLevel.MutualAuthRequested
    ' Supply client credentials.
    request.Credentials = CredentialCache.DefaultCredentials
    Dim response As HttpWebResponse = CType(request.GetResponse(), HttpWebResponse)
    ' Determine whether mutual authentication was used.
    Console.WriteLine("Is mutually authenticated? {0}", response.IsMutuallyAuthenticated)
    ' Read and display the response.
    Dim streamResponse As Stream = response.GetResponseStream()
    Dim streamRead As New StreamReader(streamResponse)
    Dim responseString As String = streamRead.ReadToEnd()
    Console.WriteLine(responseString)
    ' Close the stream objects.
    streamResponse.Close()
    streamRead.Close()
    ' Release the HttpWebResponse.
    response.Close()
End Sub

// The following example uses the System, System.Net, 
// and System.IO namespaces.

public static void RequestMutualAuth(Uri resource)
{
    // Create a new HttpWebRequest object for the specified resource.
    WebRequest request=(WebRequest) WebRequest.Create(resource);
    // Request mutual authentication.
   request.AuthenticationLevel = AuthenticationLevel.MutualAuthRequested;
    // Supply client credentials.
    request.Credentials = CredentialCache.DefaultCredentials;
    HttpWebResponse response = (HttpWebResponse) request.GetResponse();
    // Determine whether mutual authentication was used.
    Console.WriteLine("Is mutually authenticated? {0}", response.IsMutuallyAuthenticated);
    // Read and display the response.
    Stream streamResponse = response.GetResponseStream();
    StreamReader streamRead = new StreamReader(streamResponse);
    string responseString = streamRead.ReadToEnd();
   Console.WriteLine(responseString);
    // Close the stream objects.
    streamResponse.Close();
    streamRead.Close();
    // Release the HttpWebResponse.
    response.Close();
}

// The following example uses the System, System.Net, 
// and System.IO namespaces.
static void RequestMutualAuth( Uri^ resource )
{
   // Create a new HttpWebRequest object for the specified resource.
   WebRequest^ request = dynamic_cast<WebRequest^>(WebRequest::Create( resource ));

   // Request mutual authentication.
   request->AuthenticationLevel = AuthenticationLevel::MutualAuthRequested;

   // Supply client credentials.
   request->Credentials = CredentialCache::DefaultCredentials;
   HttpWebResponse^ response = dynamic_cast<HttpWebResponse^>(request->GetResponse());

   // Determine whether mutual authentication was used.
   Console::WriteLine( L"Is mutually authenticated? {0}", response->IsMutuallyAuthenticated );

   // Read and display the response.
   Stream^ streamResponse = response->GetResponseStream();
   StreamReader^ streamRead = gcnew StreamReader( streamResponse );
   String^ responseString = streamRead->ReadToEnd();
   Console::WriteLine( responseString );

   // Close the stream objects.
   streamResponse->Close();
   streamRead->Close();

   // Release the HttpWebResponse.
   response->Close();
}