When you edit or create a new web- or file-based data source (i.e. JSON, XML or OData) in the Connection Editor, you can optionally set the Authentication Protocol. In Report Designer this is done by selecting the protocol itself and then setting the properties for that protocol. 

Open the Connection Editor and edit or create a new Web/File data source connection. In the Authentication Protocol field, select the protocol you want from the dropdown menu, then fill in the properties fields for that protocol. The Connection Editor interface will look slightly different depending on the type of data source connection.  

To access the Authentication Protocol for an Import Tag, open the Tag Editor and navigate to the Properties pane. In the Tag Properties, click the [...] button to bring up the Connection String interface.

There is no URL in the Import Tag credentials because the Import Tag itself provides the URL (in the Query Pane).  

In your Report Template in Report Designer, create an [Input Parameter]. Note the parameter's name and default value, you will use them later. When output from the Template, the value entered into the Input Parameter will be of the form:

“AccessProvider=Basic;Username=username;Password=password;”

Open your Import Tag and navigate to the Properties Pane. Open the Connection String interface, click on Use Variable, and select the variable name from the dropdown menu.

Now locate the Engine code you're using; either open Catapult, or navigate to where the Windward Report Engine Samples are stored on your machine (by default in C:\Users\%USERNAME%\Documents\Windward DotNet Engine Samples). 

Find the Advanced section/folder, and open the Variables example. Here is the basic information that will need to be added to your code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using net.windward.util;
using net.windward.util.AccessProviders;
using WindwardReportsDrivers.net.windward.AccessProviders;
using WindwardReportsDrivers.net.windward.AccessProviders.protocols;
using Convert = System.Convert;
namespace SampleAccessProvider
{
    public class SampleHttpAccessProvider : HttpAccessProvider
    {
        private static readonly string USERNAME = "Username";
        private static readonly string PASSWORD = "Password";
        /// <summary>
        /// This provides a list of the properties that are needed for this connection.
        /// This list will be used to form the property grid for this connection in AutoTag.
        /// </summary>
        public override List<PropertyInfo> Properties
        {
            get
            {
                return new List<PropertyInfo>
                {
                    //Arguments for property info constructor.
                    //arg 1: prompt for the property: This is the way the property will be displayed in the connection grid.
                    //arg 2: Property discription: This will be used for tool tips in the AutoTag UI.
                    //arg 3: Property Key: The name of this property to be used in the connection string. (ex [email protected])
                    //arg 4: Default value: A default value for this property.
                    //arg 5: Property type: the type this property needs to be when passed for the connection. (note: if you specify integer all values provided must be parsable as integers)
                    //arg 6: IsPassword: Only used to determine if property should be masked in the ui.
                    new PropertyInfo("Username", "The username for the connection", USERNAME, "",typeof(string), false),
                    new PropertyInfo("Password", "The password for the connection", PASSWORD, "", typeof(string), true)
                };
            }
        }


        /// <summary>
        /// returns the properties from the connection string as a Dictionary
        /// </summary>
        /// <param name="connectionString"></param>
        /// <returns></returns>
        public override Dictionary<string, string> GetConnectionStringProperties(string connectionString)
        {
            Dictionary<string, string> dict = new Dictionary<string, string>();
            //grab any properties you have defined as required in your in your properties list.
            string username = StringUtils.getConnectionStringProperty(connectionString, USERNAME);
            dict.Add(USERNAME, username);
            string password = StringUtils.getConnectionStringProperty(connectionString, PASSWORD);
            dict.Add(PASSWORD, password);
           
            //the url that will be used for this connection
            string connectionUrl = StringUtils.getConnectionStringProperty(connectionString,
                BaseAccessProvider.CONNECTION_URL);
            dict.Add(CONNECTION_URL, connectionUrl);


            //you will also need the type of this provider.
            dict.Add(CONNECTION_ACCESS_PROVIDER, Name);


            return dict;
        }


        /// <summary>
        /// Returns a connection string using the provided properties
        /// </summary>
        /// <param name="properties"></param>
        /// <returns></returns>
        public override string CreateConnectionString(Dictionary<string, string> properties)
        {
            StringBuilder connStrBuilder = new StringBuilder();
            //add our access provider to the string
            connStrBuilder.Append(string.Format("{0}={1};", CONNECTION_ACCESS_PROVIDER, Name));
            if(properties.ContainsKey(CONNECTION_URL))
                connStrBuilder.Append(string.Format("{0}={1};", CONNECTION_URL, properties[CONNECTION_URL]));
            if (properties.ContainsKey(USERNAME))
                connStrBuilder.Append(string.Format("{0}={1};", USERNAME, properties[USERNAME]));
            if (properties.ContainsKey(PASSWORD))
                connStrBuilder.Append(string.Format("{0}={1};", USERNAME, properties[USERNAME]));


            return connStrBuilder.ToString();
        }


        /// <summary>
        /// The name of this access provider.
        /// </summary>
        public override string Name { get { return "BasicHttpAccessProviderExample"; } }


        /// <summary>
        /// A Description of what this access provider is for.
        /// </summary>
        public override string Description { get
            {
                return "An example of an AccessProvider implementing basic http authentication.";
            }
        }
       
        /// <summary>
        /// Handles building your custom request.
        /// </summary>
        /// <param name="url">The url to make the request from</param>
        /// <param name="credentials">If you use the static user name and password strings from BaseFullAccessProvider to define your props your credentails will be here</param>
        /// <param name="headers">http headers for "content-type" and "accept" if applicable</param>
        /// <param name="allProps">A dictionary of all the properties you have defined for your connection.</param>
        /// <returns></returns>
        public override ResponseHttp Request(string url, NetworkCredential credentials, IDictionary<string, string> headers, Dictionary<string, string> allProps)
        {
            HttpWebRequest request = (HttpWebRequest)BuildRequest(url, headers);




            //set up basic authentication
            request.KeepAlive = true;
            // this part is not used until after a request is refused, but we add it anyways
            CredentialCache myCache = new CredentialCache();
            myCache.Add(new Uri(url), "Basic", credentials);
            request.Credentials = myCache;


            // this is how we put the uname/pw in the first request (avoids 2 tries to succeed)
            string cre = string.Format("{0}:{1}", allProps[USERNAME], allProps[PASSWORD]);
            byte[] bytes = Encoding.ASCII.GetBytes(cre);
            string base64 = Convert.ToBase64String(bytes);
            request.Headers.Add("Authorization", "Basic " + base64);


            return new ResponseHttp(request.GetResponse(), url);
        }
    }
}