Cookie not always created in client

From: Andres Denkberg (Andres_at_myvideo.co.il)
Date: 07/24/03 

Date: Thu, 24 Jul 2003 20:23:28 +0300

I have the following login code:

private void Login()

{

  string strRole;

  string sVirtualDir = ConfigurationSettings.AppSettings["WebSite"];

  // Initialize FormsAuthentication, for what it's worth

  FormsAuthentication.Initialize();

  UserAdmin oUser = new UserAdmin( UserName.Text, Password.Text );

  strRole = oUser.Role;

  if( strRole == "Normal" )

  {

      Response.Redirect( sVirtualDir + "/MF/users/Default.asp" );

  }

  else if( strRole == "Conference" || strRole == "Administrator" )

  {

    ApplicationLog.WriteInfo( "Loggin - " + UserName.Text + "/" + strRole );

    // Create a new ticket used for authentication

    FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(

                        1, // Ticket version

                        UserName.Text, // Username associated with ticket

                        DateTime.Now, // Date/time issued

                        DateTime.Now.AddMinutes(20), // Date/time to expire

                        true, // "true" for a persistent user cookie

                        strRole, // User-data, in this case the roles

                        FormsAuthentication.FormsCookiePath ); // Path cookie valid for

    // Hash the cookie for transport

    string hash = FormsAuthentication.Encrypt( ticket );

    HttpCookie cookie = new HttpCookie(

                                FormsAuthentication.FormsCookieName, // Name of auth cookie

                                hash); // Hashed ticket

    if( ticket.IsPersistent )

        cookie.Expires = ticket.Expiration;

    // Add the cookie to the list for outgoing response

    Response.Cookies.Add( cookie );

    // Add Customer ID to the session

    HttpContext.Current.Session.Add( "CustomerID", oUser.CustomerAttached );

    // Redirect to requested URL, or homepage if no previous page requested

    string returnUrl = Request.QueryString["ReturnUrl"];

    if( returnUrl == null )

    {

        if( strRole == "Administrator" )

            returnUrl = sVirtualDir + "/Admin/Default.aspx";

        else

        {

            returnUrl = sVirtualDir + "/Conference/MsgManagement/ViewMessages.aspx";

        }

    }

    ApplicationLog.WriteInfo( "returnUrl = " + returnUrl );

    if( Request.Path.ToLower().LastIndexOf( "comtec" ) != -1 )

        HttpContext.Current.Session["Comtec"] = true;

    else

        HttpContext.Current.Session["Comtec"] = null;

    // Don't call FormsAuthentication.RedirectFromLoginPage since it could

    // replace the authentication ticket (cookie) we just added

    Response.Redirect( returnUrl );

  }

  else

  {

      // Never tell the user if just the username is password is incorrect.

      // That just gives them a place to start, once they've found one or

      // the other is correct!

      ErrorLabel.Text = "Username / password incorrect. Please try again.";

      ErrorLabel.Visible = true;

  }

}

 

It works well but in some cases the cookie its not created in the client machine and the user is redirected back to the login page, it happens always in the same client machines. The browsers used by the client machines accept cookies, so the problem it's not with the cookie authorization. I don't know what is the problem I have check everything that could cause this problem.

 

I appreciate any help