protected override System.Threading.Tasks.Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
{
string normalizedUri;
string authHeader;
string normalizedParameters;
var url = AuthBase.GenerateSignature(
request.RequestUri,
ApiKey,
ApiSecret,
UserToken,
UserSecret,
request.Method.Method,
AuthBase.GenerateTimeStamp(),
AuthBase.GenerateNonce(),
out normalizedUri,
out normalizedParameters,
out authHeader);
request.Headers.Authorization = new AuthenticationHeaderValue("OAuth", authHeader);
return(base.SendAsync(request, cancellationToken));
}