public async Task Invoke(HttpContext httpContext)
{
// compute identity from request
var identity = SetIdentity(httpContext);
var key = ComputeCounterKey(identity);
var canProcess = true;
lock (lockObj)
{
canProcess = _handler.Acquire(key, _options.Total, _options.PerSencond);
}
if (canProcess)
{
await _next.Invoke(httpContext);
return;
}
httpContext.Response.StatusCode = 429;
await httpContext.Response.WriteAsync("up to limit");
await _next.Invoke(httpContext);
}