Final message in server events not being pushed until heartbeat

问题

We are having an issue with the final message sent over service stack waiting until the next heart beat to be sent. We believe it to be similar to :

Servicestack server sent events

However, res.Write() is now deprecated and res.WriteAsync() throws:

System.InvalidOperationException: This operation cannot be performed after the response has been submitted

I have also tried to solve the issue stated in the above thread by using :

// Remove url compression https://stackoverflow.com/questions/53559038/asp-net-core-disable-response-decompression
// because of https://stackoverflow.com/questions/25960723/servicestack-server-sent-events
services.AddResponseCompression(options =>
{
    var gzip = options.Providers.OfType<GzipCompressionProvider>().FirstOrDefault();
    if (gzip != null)
    {
       options.Providers.Remove(gzip);
    }
});

Would appreciate a push in the correct direction to addressing this issue as the currently accepted solution to this issue is no longer viable.

来源：https://stackoverflow.com/questions/58165887/final-message-in-server-events-not-being-pushed-until-heartbeat