BExIS.Dim.Helpers.BasicWebService.Call C# (CSharp) 메소드

        public static async Task<string> Call(string url, string user,string password, string parameters="")
        {
            string returnValue = "";

            try
            {
                using (var client = new HttpClient())
                {
                    //generate url

                    client.BaseAddress = new Uri(url);
                    client.DefaultRequestHeaders.Accept.Clear();
                    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

                    //[email protected]:WSTest
                    var byteArray = Encoding.ASCII.GetBytes(user+":"+password);

                    // "basic "+ Convert.ToBase64String(byteArray)
                    AuthenticationHeaderValue ahv = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray));
                    client.DefaultRequestHeaders.Authorization = ahv;

                    string requesturl = url + parameters;
                    HttpResponseMessage response = await client.GetAsync(requesturl);
                    response.EnsureSuccessStatusCode();
                    returnValue = ((HttpResponseMessage)response).Content.ReadAsStringAsync().Result;
                }
                return returnValue;
            }
            catch (Exception e)
            {
                throw (e);
            }
        }
    }