public override object OnActionExecuting(IWebApi api)
{
if (api.RequestValues["nocache"] != null)
{
api.SetHeader("Cache-Control", "no-cache");
return(null);
}
var _key = GetIdempotentKey(api);
var value = api.Cache.AddOrGetExisting(_key, "toomanyrequest", DateTimeOffset.Now.AddSeconds(2));
var now = DateTime.UtcNow;
if (value != null)
{
if (value.ToString().Equals("toomanyrequest"))
{
api.SetHeader("Cache-Control", "no-cache");
return(new ApiException(ExceptionCode.TooManyRequests));
}
DateTime ifModifiedSince;
DateTime.TryParse(api.RequestValues.Headers["If-Modified-Since"], out ifModifiedSince);
var expire = ifModifiedSince.AddSeconds(_seconds);
var sec = _seconds;
if (expire > now)
{
sec = (int)(expire - now).TotalSeconds;
}
api.SetHeader("Cache-Control", "max-age=" + sec);
api.SetHeader("Expires", "-1");
api.SetHeader("ETag", _key);
return(value);
}
api.OnError += Api_OnError;
api.SetHeader("Cache-Control", "max-age=" + _seconds);
api.SetHeader("Expires", now.AddSeconds(_seconds).ToString("r"));
api.SetHeader("ETag", _key);
return(null);
}
public override object OnActionExecuting(IWebApi api)
{
api.SetHeader("Cache-Control", "no-cache");
return(null);
}