public async Task InvokeAsync(HttpContext context, IRequestRateLimiter requestRateLimiter, RequestRateLimiterSettings settings)
{
if (!context.Request.Headers.ContainsKey(settings.ApiKeyHeader))
{
throw new Exception();
}
var apiKey = context.Request.Headers[settings.ApiKeyHeader];
if (!string.IsNullOrWhiteSpace(apiKey))
{
if (!requestRateLimiter.CanPerformRequest(apiKey))
{
context.Response.StatusCode = 429;
await context.Response.WriteAsync("Too many requests");
}
}
await _next(context);
}