private async Task HandleServerTimingAsTrailerHeaderAsync(HttpContext context, IServerTiming serverTiming)
{
context.Response.DeclareTrailer(HeaderNames.ServerTiming);
serverTiming.SetServerTimingDeliveryMode(ServerTimingDeliveryMode.Trailer);
await _next(context);
context.Response.SetServerTimingTrailer(new ServerTimingHeaderValue(serverTiming.Metrics));
}
private Task HandleServerTimingAsResponseHeaderAsync(HttpContext context, IServerTiming serverTiming)
{
context.Response.OnStarting(() => {
if (serverTiming.Metrics.Count > 0)
{
context.Response.SetServerTiming(new ServerTimingHeaderValue(serverTiming.Metrics));
}
return(_completedTask);
});
serverTiming.SetServerTimingDeliveryMode(ServerTimingDeliveryMode.ResponseHeader);
return(_next(context));
}