Fediversity/matrix/nginx/revproxy.conf

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

	# For the federation port
	listen 8448 ssl;
	listen [::]:8448 ssl;

	ssl_certificate /etc/letsencrypt/live/matrix.example.com/fullchain.pem;
	ssl_certificate_key /etc/letsencrypt/live/matrix.example.com/privkey.pem;
	include /etc/letsencrypt/options-ssl-nginx.conf;
	ssl_dhparam /etc/ssl/dhparams.pem;

	server_name matrix.example.com;

	# Abuse reports get forwarded to Draupnir, listening on port 8082
	location ~ ^/_matrix/client/(r0|v3)/rooms/([^/]*)/report/(.*)$ {
		# The r0 endpoint is deprecated but still used by many clients.
		# As of this writing, the v3 endpoint is the up-to-date version.
		
		# Alias the regexps, to ensure that they're not rewritten.
		set $room_id $2;
		set $event_id $3;
		proxy_pass http://[::1]:8082/api/1/report/$room_id/$event_id;
	}

	# Reports that need to reach Synapse (not really sure if this is used)
	location /_synapse/admin/v1/event_reports {
		proxy_pass http://localhost:8008;
		proxy_set_header X-Forwarded-For $remote_addr;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_set_header Host $host;
		client_max_body_size 50M;
		proxy_http_version 1.1;
	}
	location ~ ^/_synapse/admin/v1/rooms/([^/]*)/context/(.*)$ {
		set $room_id $2;
		set $event_id $3;
		proxy_pass http://localhost:8008/_synapse/admin/v1/rooms/$room_id/context/$event_id;
		proxy_set_header X-Forwarded-For $remote_addr;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_set_header Host $host;
		client_max_body_size 50M;
		proxy_http_version 1.1;
	}

	# If you want the server version to be public:
	location ~ ^/_synapse/admin/v1/server_version$ {
		proxy_pass http://localhost:8008;
		proxy_set_header X-Forwarded-For $remote_addr;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_set_header Host $host;
		client_max_body_size 50M;
		proxy_http_version 1.1;
	}
		
	# The rest of the admin endpoint shouldn't be public
	location ~ ^/_synapse/admin {
		allow 127.0.0.1;
		allow ::1;
		allow 111.222.111.222;
		allow dead:beef::/48;
		deny all;

		proxy_pass http://localhost:8008;
		proxy_set_header X-Forwarded-For $remote_addr;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_set_header Host $host;
		client_max_body_size 50M;
		proxy_http_version 1.1;
	}

	location ~ ^(/_matrix|/_synapse/client) {
		proxy_pass http://localhost:8008;
		proxy_set_header X-Forwarded-For $remote_addr;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_set_header Host $host;
		client_max_body_size 50M;
		proxy_http_version 1.1;
	}

	access_log /var/log/nginx/matrix-access.log;
	error_log /var/log/nginx/matrix-error.log;
}