iCal from API GET AirBnb returns "The remote server returned an error: (403) Forbidden" ASP.NET

Question

I want to import dates from iCal that provides AirBnb. I am developing ASP.NET MVC app with some nugget called iCal.Net.

The code:

public ActionResult Index()
    {

        const string airbnbCalendar = "https://www.airbnb.com/calendar/ical/1111111.ics?s=zkdjhfkjsdzkhfkkjsadjkfhskjdfhjk";

        Calendar calendar;
        using (var client = new WebClient())
        {
            byte[] file = null;

            file = client.DownloadData(airbnbCalendar);
            Stream stream = new MemoryStream(file);
            calendar = Calendar.Load(stream);
        }

        return View();
    }

I am getting an error on line client.DownloadData(airbnbCalendar):

The remote server returned an error: (403) Forbidden

I've googled a little bit, and I found that for some reason I must "imitate" a web browser for that request. Here is the link to the airbnb forum

How can I transform my request to the CURL request? In order to airbnb gives me proper data?

P.S. When I copy airbnb url to the browser, I get proper .ics file

For security reason I've altered url address.

Answer 1

The User-Agent is transferred via request-header. So add an appropriate header to the webclient like shown here.