public AuthenticationSignature ComputeSignature(IRequest request)
{
request.TimeStamp = (long)DateTime.UtcNow.ToUnixTimestamp();
string timestamp = DateTime.UtcNow.ToUnixTimestamp().ToString(CultureInfo.InvariantCulture);
string prehash = timestamp + request.Method + request.RequestUrl + request.RequestBody;
byte[] data = Convert.FromBase64String(Secret);
AuthenticationSignature authenticationSignature = new AuthenticationSignature
{
Signature = HashString(prehash, data),
Timestamp = timestamp
};
return(authenticationSignature);
}
public virtual async Task <string> RequestAsync(IRequest request)
{
try
{
await _ioRequestSemaphoreSlim.WaitAsync();
StringContent requestBody = new StringContent("");
HttpResponseMessage response;
Uri absoluteUri;
if (Authentication == null)
{
throw new Exception("Invalid Authentication.");
}
if (string.IsNullOrEmpty(Authentication.Passphrase))
{
request.RequestSignature = Authentication.ComputeSignature(request.RequestQuery);
request.RequestQuery = null;
absoluteUri = request.ComposeRequestUriAbsolute(Authentication.EndpointUrl);
HttpClient.DefaultRequestHeaders.Clear();
HttpClient.DefaultRequestHeaders.Add("X-MBX-APIKEY", Authentication.ApiKey);
HttpClient.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json")); //ACCEPT header
}
else
{
AuthenticationSignature authenticationSignature = Authentication.ComputeSignature(request);
requestBody = request.GetRequestBody();
absoluteUri = request.AbsoluteUri;
HttpClient.DefaultRequestHeaders.Clear();
//The api key as a string.
HttpClient.DefaultRequestHeaders.Add("CB-ACCESS-KEY", Authentication.ApiKey);
//The passphrase you specified when creating the API key.
HttpClient.DefaultRequestHeaders.Add("CB-ACCESS-PASSPHRASE", Authentication.Passphrase);
//The base64-encoded signature (see Signing a Message).
HttpClient.DefaultRequestHeaders.Add("CB-ACCESS-SIGN", authenticationSignature.Signature);
// A timestamp for your request.
HttpClient.DefaultRequestHeaders.Add("CB-ACCESS-TIMESTAMP", authenticationSignature.Timestamp);
//user-agent header
HttpClient.DefaultRequestHeaders.Add("User-Agent", "sefbkn.github.io");
}
switch (request.Method)
{
case "GET":
response = await HttpClient.GetAsync(absoluteUri);
break;
case "POST":
response = await HttpClient.PostAsync(absoluteUri, requestBody);
break;
case "DELETE":
response = await HttpClient.DeleteAsync(absoluteUri);
break;
default:
throw new NotImplementedException("The supplied HTTP method is not supported: " +
request.Method);
}
if (response == null)
{
throw new Exception(
$"null response from RequestAsync \r\n URI:{request.AbsoluteUri} \r\n:Request Body:{requestBody}");
}
return(await response.Content.ReadAsStringAsync());
}
catch (Exception ex)
{
ProcessLogBroadcast?.Invoke(MessageType.Error,
$"Method: RequestAsync\r\nException Stack Trace: {ex.StackTrace}");
await ClientWebSocket.ConnectAsync(Authentication.WebSocketUri, CancellationToken.None);
}
finally
{
_ioRequestSemaphoreSlim.Release();
}
return(null);
}
