Hello.
I have a Nginx server which acts as a reverse proxy for a given number of
different domains and I’m trying to enable http3 for a subset of them.
I placed the directives:
> http3 on;
> listen xx.xx.xx.xx:443 default_server quic reuseport;
> quic_retry on;
in the default.conf file and then, only for those domains which I want http3
enabled I also add in the corresponding virtual host:
> http3 on;
> listen xx.xx.xx.xx:443 quic;
> quic_retry on;
In the server section and
> add_header Alt-Svc 'h3=":8443"; ma=86400';
Inside the location.
Now, what happens is that if I try to open the sites *with* http3 enabled,
everything works as expected. If I try to open a site *without* http3 enabled,
sometimes I have an SSL error because the server returns the “default virtual
host” certificate.
It seems related to the type of browser.
Is it an expected behaviour or I am doing something wrong with the server
configuration?
Nginx version: nginx/1.26.1 on ubuntu 22.04
Thanks.
Riccardo
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