id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
2582	HTTP3 working with curl but not in Browser	florian.s.senf@…		"Hello,

I configured HTTP/3 for nginx 1.25. It's working when I call my website via curl. But it's showing here https://http3check.net/ that no connection could be established.

This is a clip of my conf file:
server {
        listen 443 ssl; 
        listen [::]:443 ssl;  
	listen 443 quic reuseport;  
	server_name ...

	http2 on;
	http3 on;
	http3_hq on;
	quic_retry on;
	ssl_early_data on;
	quic_gso on;
	quic_host_key /etc/ssl/..._2023.key;
	add_header X-protocol $server_protocol always;

....

}
In the curl response it's showing: 
HTTP/3 200 
x-protocol: HTTP/3.0

But the browser check on https://http3check.net/ saying that it's not working.

Any idea for that?

Thank you!
Florian"	defect	new	major	nginx-1.27	http/3	1.25.x				Linux ubuntu 5.15.0-91-generic #101-Ubuntu SMP Tue Nov 14 13:30:08 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.25.3
built with OpenSSL 1.1.1f  31 Mar 2020
TLS SNI support enabled
configure arguments: --with-cc-opt='-g -O2 -fdebug-prefix-map=/build/nginx-n37Hz9/nginx-1.25.3=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -Wdate-time -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -fPIC' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --modules-path=/usr/lib/nginx/modules --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-compat --with-debug --with-pcre-jit --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_v2_module --with-http_v3_module --with-http_dav_module --with-http_slice_module --with-threads --with-http_addition_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_sub_module"