nginx.conf

server {
	listen		443 ssl http2;
	listen		[::]:443 ssl http2;

	server_name	webdav.club1.fr;

	ssl_certificate /etc/letsencrypt/live/club1.fr/fullchain.pem;
	ssl_certificate_key /etc/letsencrypt/live/club1.fr/privkey.pem;

	client_max_body_size 1G;

	# Client autodiscover using .well-known
	rewrite ^/.well-known/caldav$ / redirect;
	rewrite ^/.well-known/carddav$ / redirect;

	# Fake NextCloud for Gnome-online-accounts
	rewrite ^/remote.php/carddav / redirect;
	rewrite ^/remote.php/caldav / redirect;
	rewrite ^/remote.php/webdav / redirect;
	#rewrite ^/remote.php/carddav/?(.*)$ /$1 redirect;
	#rewrite ^/remote.php/caldav/?(.*)$ /$1 redirect;
	#rewrite ^/remote.php/webdav/?(.*)$ /$1 redirect;


	include proxy_params;

	location /files {
		# This header must be present in all responses
		add_header access-control-allow-origin * always;

		# OPTIONS requests are preflight for cross-origin requests in web browsers (drive.club1.fr)
		if ($request_method = OPTIONS) {
			# CORS headers for JS frontend
			add_header access-control-allow-origin *;
			add_header access-control-allow-methods GET,POST,PUT,PATCH,DELETE,OPTIONS,PROPFIND,PROPPATCH,MOVE,COPY,MKCOL,LOCK,UNLOCK;
			add_header access-control-allow-credentials true;
			add_header access-control-allow-headers authorization,dnt,user-agent,keep-alive,content-type,accept,origin,depth,destination;

			# Tell client that this preflight info is valid for 100h
			add_header access-control-max-age 360000;

			# DAV header
			add_header dav 1,2,3,extended-mkcol,sabredav-partialupdate;

			# Allways return OK as browsers do not use auth credentials on preflight
			return 204;
		}
		proxy_pass http://127.0.0.1:8080;
	}

	location / {
		proxy_pass http://127.0.0.1:8080;
	}

	access_log /var/log/nginx/webdav_access.log;
	error_log /var/log/nginx/webdav_error.log;
}