proxy_set_header X-Forwarded-By $server_addr;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Port $server_port;
proxy_set_header Host $http_host;
proxy_set_header Upgrade $http_upgrade;
proxy_http_version 1.1;