# HTTP/2 Gateway **URL:** \ **Category:** NGINX\ **Created:** [December 6, 2015, 3:00pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578 "2015-12-06T15:00:53Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Rafa\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Post date:** [December 6, 2015, 3:00pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/1 "2015-12-06T15:00:53Z")
Hi, i’ve tried to use nginx as http/2 gateway for backends which only supporting HTTP 1.1. If a backend is already HTTP/2 ready, than HTTP/2 should be used. When i test my configuration (simple proxy\_pass / upstream), the connection from nginx to the backend is always HTTP 1.1 (even if the backend supports HTTP/2). Is there a possiblity to speak HTTP/2 also to the backends? I’ve used “proxy\_http\_version 1.1” in my configuration (no other setting (higher version or protocol auto-negotiation) available). Regards, Bjoern ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 7, 2015, 3:14am UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/2 "2015-12-07T03:14:36Z")
Hello! On Sun, Dec 06, 2015 at 03:00:23PM +0100, [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I’ve used “proxy\_http\_version 1.1” in my configuration (no other setting > (higher version or protocol auto-negotiation) available). No, talking to backends using the HTTP/2 protocol is not supported by proxy module. – Maxim D. > **[nginx](http://nginx.org/)** ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 11, 2015, 11:03pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/3 "2015-12-11T23:03:56Z")
Is HTTP/2 proxy support planned for the near future? Nicholas ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 14, 2015, 5:17pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/4 "2015-12-14T17:17:59Z")
Hello! On Fri, Dec 11, 2015 at 10:03:15PM +0000, Nicholas Capo wrote: > Is HTTP/2 proxy support planned for the near future? Short answer: No, there are no plans. Long answer: There is almost no sense to implement it, as the main HTTP/2 benefit is that it allows multiplexing many requests within a single connection, thus [almost] removing the limit on number of simalteneous requests - and there is no such limit when talking to your own backends. Moreover, things may even become worse when using HTTP/2 to backends, due to single TCP connection being used instead of multiple ones. On the other hand, implementing HTTP/2 protocol and request multiplexing within a single connection in the upstream module will require major changes to the upstream module. Due to the above, there are no plans to implement HTTP/2 support in the upstream module, at least in the foreseeable future. If you still think that talking to backends via HTTP/2 is something needed - feel free to provide patches. – Maxim D. > **[nginx](http://nginx.org/)** ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 14, 2015, 6:57pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/5 "2015-12-14T18:57:18Z")
“multiplexing” seems to be a good use case for upstream proxying. We don’t have control how fast end users adopting HTTP/2, so we may still have tons of HTTP/1.x requests coming in, but we can certainly upgrade upstream servers that we control to support HTTP/2. If nginx upstream proxy module can also support HTTP/2, we will be able to take advantage of “multiplexing” the connection between nginx and upstream. Thanks! Frank ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 14, 2015, 7:16pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/6 "2015-12-14T19:16:00Z")
On Monday 14 December 2015 09:57:02 Frank L. wrote: > “multiplexing” seems to be a good use case for upstream proxying. We don’t > have control how fast end users adopting HTTP/2, so we may still have tons > of HTTP/1.x requests coming in, but we can certainly upgrade upstream > servers that we control to support HTTP/2. If nginx upstream proxy module > can also support HTTP/2, we will be able to take advantage of > “multiplexing” the connection between nginx and upstream. [..] What’s the advantage? wbr, Valentin V. Bartenev ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 14, 2015, 7:20pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/7 "2015-12-14T19:20:05Z")
Hello! On Mon, Dec 14, 2015 at 09:57:02AM -0800, Frank L. wrote: > “multiplexing” seems to be a good use case for upstream proxying. We don’t > have control how fast end users adopting HTTP/2, so we may still have tons > of HTTP/1.x requests coming in, but we can certainly upgrade upstream > servers that we control to support HTTP/2. If nginx upstream proxy module > can also support HTTP/2, we will be able to take advantage of > “multiplexing” the connection between nginx and upstream. As already said, “advantage” is mostly nonexistent when considering connections between nginx and upstreams, or even disadvantage in some cases. But if you think that it will be beneficial - feel free to provide patches. – Maxim D. > **[nginx](http://nginx.org/)** ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 15, 2015, 10:40am UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/8 "2015-12-15T10:40:46Z")
On Monday 14 December 2015 18:24:01 Nicholas Capo wrote: > My specific use case is to support an HTTP/2 application behind a load > balancer (reverse proxy). > > Also as a backend LB between services that could use a long running HTTP/2 > connection to do their communication. > > Places where I need an LB, but also know that both ends would /prefer/ to > use HTTP/2. Can you name such applications that are only able to talk HTTP/2? HTTP/2 isn’t a better and shiny version of HTTP, it’s completely different transport layer with a number of disadvantages as well. wbr, Valentin V. Bartenev ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 15, 2015, 6:07pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/9 "2015-12-15T18:07:40Z")
I think what they are asking is to support the transport layer so that they don’t have to support both protocols on whatever endpoint they are developing. Maybe I’m wrong and someone has grand plans about multiplexing requests to an upstream with http/2, but I haven’t seen anyone ask for that explicitly yet. On Tue, Dec 15, 2015 at 4:40 AM, Valentin V. Bartenev [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 15, 2015, 6:32pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/10 "2015-12-15T18:32:12Z")
> Can you name such applications that are only able to talk HTTP/2? The developers I support would like to use GRPC [1] which is HTTP/2 only. I need to provide an HA/LB system to support them. I’m not saying this would be easy to implement, only that I need it 🙂 Thank you for your help, Nicholas [1] [GitHub - grpc/grpc: C++ based gRPC (C++, Python, Ruby, Objective-C, PHP, C#) · GitHub](https://github.com/grpc/grpc) ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [December 14, 2015, 7:24pm UTC](https://www.ruby-forum.com/t/http-2-gateway/243578/11 "2015-12-14T19:24:45Z")
My specific use case is to support an HTTP/2 application behind a load balancer (reverse proxy). Also as a backend LB between services that could use a long running HTTP/2 connection to do their communication. Places where I need an LB, but also know that both ends would /prefer/ to use HTTP/2. Nicholas On Mon, Dec 14, 2015 at 12:15 PM Valentin V. Bartenev [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)