Call a REST Web Service - Xamarin

private async Task<JsonValue> FetchWeatherAsync (string url)
{
    // Create an HTTP web request using the URL:
    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create (new Uri (url));
    request.ContentType = "application/json";
    request.Method = "GET";

    // Send the request to the server and wait for the response:
    using (WebResponse response = await request.GetResponseAsync ())
    {
        // Get a stream representation of the HTTP web response:
        using (Stream stream = response.GetResponseStream ())
        {
            // Use this stream to build a JSON document object:
            JsonValue jsonDoc = await Task.Run (() => JsonObject.Load (stream));
            Console.Out.WriteLine("Response: {0}", jsonDoc.ToString ());

            // Return the JSON document:
            return jsonDoc;
        }
    }
}