1upstream backends {
 2BACKENDS
 3}
 4
 5server {
 6	listen 80;
 7	location / {
 8		proxy_pass_header Server;
 9		proxy_set_header Host $http_host;
10		proxy_set_header X-Real-IP $remote_addr;
11		proxy_set_header X-Scheme $scheme;
12		proxy_pass http://backends;
13		proxy_next_upstream error;
14	}
15}