cAYMWYkZ

1protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
2{
3   string apikey = HttpUtility.ParseQueryString(request.RequestUri.Query).Get("apikey");
4
5   if (string.IsNullOrWhiteSpace(apikey)) {
6      return SendError("You can't use the API without the key.", HttpStatusCode.Forbidden);
7   } else {
8      return base.SendAsync(request, cancellationToken);
9   }
10}
11
12private Task<HttpResponseMessage> SendError(string error, HttpStatusCode code)
13{
14   var response = new HttpResponseMessage();
15   response.Content = new StringContent(error);
16   response.StatusCode = code;
17            
18   return Task<HttpResponseMessage>.Factory.StartNew(() => response);
19}