private void RequestResult <T>(IDictionary <string, string> parameters, string adminEndpoint, Action <AdminResult <T> > callback, IDictionary <string, string> postData = null)
{
var uri = new Uri(string.Format("{0}{1}?{2}", _serverUrl, adminEndpoint, GetQueryString(parameters)), UriKind.Absolute);
bool isPost = postData != null;
WebRequest webRequest = WebRequest.Create(uri);
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.Method = isPost ? "POST" : "GET";
//webRequest.Accept = "text/plain";
Action <IAsyncResult> getResponse = asyncResult =>
{
var result = new AdminResult <T>();
try
{
using (var response = webRequest.EndGetResponse(asyncResult))
{
try
{
using (var reader = new StreamReader(response.GetResponseStream()))
{
string responseString = reader.ReadToEnd();
var json = JObject.Parse(responseString);
var jsonToken = json["status"];
if (jsonToken != null)
{
// If a request has a status property, only worry about
// the requests that come back with {"status": "error", otherstuff }
if (jsonToken.ToString() == "error")
{
var exception = ServiceException.Parse(json);
result.Exception = exception;
}
}
else
{
result.Result = JsonConvert.DeserializeObject <T>(responseString);
}
if (callback != null)
{
callback(result);
}
}
}
catch (Exception e)
{
result.Exception = e;
result.Status = RequestStatus.Error;
}
}
}
catch (Exception e)
{
result.Exception = e;
result.Status = RequestStatus.Error;
}
};
Action <IAsyncResult> postResponse = asyncResult =>
{
try
{
if (postData != null)
{
var encoding = new UTF8Encoding();
var bytes = encoding.GetBytes(GetQueryString(postData));
using (
Stream os =
webRequest.EndGetRequestStream(asyncResult))
{
os.Write(bytes, 0, bytes.Length);
}
}
webRequest.BeginGetResponse(ar2 => getResponse(ar2), null);
}
catch (Exception e)
{
AdminResult <T> result = new AdminResult <T>();
result.Exception = e;
result.Status = RequestStatus.Error;
if (callback != null)
{
callback(result);
}
}
};
if (isPost)
{
webRequest.BeginGetRequestStream(ar => postResponse(ar), null);
}
else
{
webRequest.BeginGetResponse(ar => getResponse(ar), null);
}
}
internal static void SetAdminResult <T>(this TaskCompletionSource <T> source, AdminResult <T> result)
{
if (source == null)
{
return;
}
if (result == null)
{
return;
}
if (result.Exception != null)
{
source.SetException(result.Exception);
}
else
{
source.SetResult(result.Result);
}
}