HTTP/2: allow unlimited number of requests in connection

[Maxim Dounin]

Hello!

On Wed, Jun 26, 2019 at 07:41:27PM +0200, Michael Würtinger wrote:

> Hello,
> 
> we're running a gRPC service behind an NGINX load balancer and we
> often see that the connection gets shut down with a GOAWAY message.
> Since our request deadlines are quite small and it takes some time to
> re-establish a connection this often leads to many failed requests.
> 
> After analyzing the situation we realized that it is caused by the
> "http2_max_requests" option which defaults to 1000. After setting this
> to a ridiculously high value our problems disappeared.
> 
> While there probably are use cases where limiting the life time of a
> connection makes sense we were wondering why it is not possible to
> disable this functionality and let a connection just live as long as
> possible?
> 
> The following patch allows to do just that by setting http2_max_requests to 0.

No, thank you.  Closing connections periodically is required to 
free associated memory, and shouldn't be disabled.

-- 
Maxim Dounin
http://mdounin.ru/