HTTP/3 with multiple server blocks

[Jonny Barnes]

If I understand the link correctly, I want to only set options on the
`default_server`.

So I know have three vhosts setup, the first is a generic https redirector
and looks like:
>server {
>    listen 80;
>    listen [::]:80;
>    return 301 https://$host$request_uri;
>}

The next starts:
>server {
>    listen 443 http3 default_server reuseport;
>    listen [::]:443 http3 default_server reuseport;
>
>    listen 443 ssl http2;
>    listen [::]:443 ssl http2;
>
>    server_name foo;
>
>    add_header Alt-Svc '$http3=":443"; ma=15';

And the second:
>server {
>    listen 443;
>    listen [::]:443;
>
>    server_name bar;
>
> add_header Alt-Svc '$http3=":443"; ma=15';

The nginx config test passes, but everything is served over HTTP/2.

Is there something obvious I’m missing here?

On Mon, 2 Nov 2020 at 13:39, Sergey Kandaurov <pluknet at nginx.com> wrote:

>
> > On 30 Oct 2020, at 22:21, Jonny Barnes <jonnybarnes at gmail.com> wrote:
> >
> > Can we do this?
> >
> > First issue is if I add the line `listen 443 http3 resueport` to more
> than one server {} block the nginx conf test gives the following error:
> >
> > > nginx: [emerg] duplicate listen options for 0.0.0.0:443 in
> /usr/local/nginx/conf/sites-enabled/legolas:2
> > > nginx: configuration file /usr/local/nginx/conf/nginx.conf test failed
>
> That's expected behaviour, see for detailed explanation:
> https://trac.nginx.org/nginx/ticket/1912
>
> >
> > It seemingly works if i only have it for one of my server blocks. But I
> can‘t get my firefox browser to connect with HTTP/3. It does connect to
> quic.nginx.org over HTTP/3.
>
> You may want to hint Firefox about QUIC protocol using Alt-Svc.
>
> --
> Sergey Kandaurov
>
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