gistfile1.txt

 public class IWantJSONDammit : DelegatingHandler
    {
        protected override Task<HttpResponseMessage> SendAsync(
            HttpRequestMessage request, CancellationToken cancellationToken)
        {

            request.Headers.Accept.Clear();
            request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

            return base.SendAsync(request,cancellationToken);
        }
    }