Thread: Trouble with POST using RestSharp -Rest api

I'm having some trouble getting the NewOrder api to work


The Server Always Returns "Invalid" Api key , The Get Method Works !


https://hitbtc.com/api
post url: /api/1/trading/new_order?nonce=1395049771755&apikey=f6ab189hd7a20 07e01d95667de3c493d


post data: clientOrderId=11111112&symbol=BTCUSD&side=buy&pric e=0.1&quantity=100&type=limit&timeInForce=GTC


php example; https://gist.github.com/hitbtc-com/10885873
sorce

Code:

 using RestSharp;
using System;
using System.Linq;
using System.Security.Cryptography;
using System.Text;




namespace Hitbtc.Api.Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            const string apiKey = "xxx";
            const string secretKey = "yyy";
            var client = new RestClient("https://api.hitbtc.com");


            var VARrequest = new RestRequest("/api/1/trading/new_order", Method.POST);
            VARrequest.AddParameter("nonce", GetNonce());
            VARrequest.AddParameter("apikey", apiKey);
            string sign = CalculateSignature(client.BuildUri(VARrequest).PathAndQuery, secretKey);
            VARrequest.AddHeader("X-Signature", sign);
            VARrequest.RequestFormat = DataFormat.Json;
            VARrequest.AddBody(new
            {
              clientOrderId = "58f32654-723a-4b60-ad6b",
              symbol = "BTCUSD",
              side = "buy",
              quantity = "0.01",
              type = "limit" ,
              price = "788.56",
              timeInForce = "GTC" });
           
            var VARresponse = client.Execute(VARrequest);


            Console.WriteLine(VARresponse.Content);
            System.Threading.Thread.Sleep(5000);
        }




        private static long GetNonce()
        {
            return DateTime.Now.Ticks * 10 / TimeSpan.TicksPerMillisecond; // use millisecond timestamp or whatever you want
        }


        public static string CalculateSignature(string text, string secretKey)
        {
            using (var hmacsha512 = new HMACSHA512(Encoding.UTF8.GetBytes(secretKey)))
            {
                hmacsha512.ComputeHash(Encoding.UTF8.GetBytes(text));
                return string.Concat(hmacsha512.Hash.Select(b => b.ToString("x2")).ToArray()); // minimalistic hex-encoding and lower case
            }
        }
    }
}