Async JSON Response

AsyncJsonResponse.cs

public interface IResponse
{
	bool IsSuccess { get; set; }

	string ErrorMessage { get; set; }
}
...
public static Task<T> GetResponseAsync<T>(string url, string method = "POST") where T: IResponse, new()
{
	try
	{
            	var request = WebRequest.CreateHttp(url);
			request.Method = method;
			request.ContentType = "application/json";
			request.Expect = "application/json";
		var r = request.GetResponseAsync();
		var p = r.ContinueWith<T>(t =>
		{
			try
			{
		                using (Stream stream = t.Result.GetResponseStream())
		                {
		                    var serializer = JsonSerializer.CreateDefault();
		                    JsonReader reader = new JsonTextReader(new StreamReader(stream));
		                    return serializer.Deserialize<T>(reader);
		                }
			}
			catch(Exception ex)
			{
				return new T() { IsSuccess = false, ErrorMessage = ex.Message };
			}
            	});
		return p;
	}
	catch(Exception ex) {
		return Task.FromResult(new T () { IsSuccess = false, ErrorMessage = ex.Message });
	}
}