snippets/proxy_common.conf

proxy_http_version 1.1;
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header Forwarded "$proxy_add_forwarded;proto=$scheme";
proxy_set_header X-Forwarded-Host $host:$server_port;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;