I have an error when trying to hit a web services that gives me weather updates. I used to be able to hit it using visual webpart in SP2010. Now I get the exception: an exception occurred during a webclient request. Inner exception: "The ServicePointManager does not support proxies with the https scheme.". when I look into the url of the web api it has changed from http proxy to https, but I would like to know how I would force my app to accept the https scheme? here is bit of my code

protected void GetWeatherInfo(string url)
        //txtCity.Text = "Cape Town";
        // var city = "Cape Town";
        //string appId = "<App Id>";
        string url1 = string.Format(url);
        using (WebClient client = new WebClient())
            WebProxy proxyObj = new WebProxy(url);

            proxyObj.Credentials = CredentialCache.DefaultCredentials;

            client.Proxy = proxyObj;
                client.Encoding = System.Text.Encoding.UTF8;
                string json = client.DownloadString(url);

                WeatherInfo weatherInfo = (new JavaScriptSerializer()).Deserialize<WeatherInfo>(json);
                lblCity_Country.Text = weatherInfo.city.name + "," + weatherInfo.city.country;
                imgCountryFlag.ImageUrl = string.Format("http://openweathermap.org/images/flags/{0}.png", weatherInfo.city.country.ToLower());
                lblDescription.Text = weatherInfo.list[0].weather[0].description;
                imgWeatherIcon.ImageUrl = string.Format("http://openweathermap.org/img/w/{0}.png", weatherInfo.list[0].weather[0].icon);
                lblTempMin.Text = string.Format("{0}°С", Math.Round(weatherInfo.list[0].temp.min, 1));
                lblTempMax.Text = string.Format("{0}°С", Math.Round(weatherInfo.list[0].temp.max, 1));
                lblTempDay.Text = string.Format("{0}°С", Math.Round(weatherInfo.list[0].temp.day, 1));
                lblTempNight.Text = string.Format("{0}°С", Math.Round(weatherInfo.list[0].temp.night, 1));
                lblHumidity.Text = weatherInfo.list[0].humidity.ToString();
                tblWeather.Visible = true;
            catch (Exception ex)
                string excep = ex.Message;


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