proxy_redirect     off;

proxy_set_header   Host $http_host;
proxy_set_header   X-Real-IP $remote_addr;
proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header   X-Forwarded-Host $server_name;
proxy_set_header   X-Forwarded-Proto $protocol;

proxy_connect_timeout       1200;
proxy_send_timeout          1200;
proxy_read_timeout          1200;
send_timeout                1200;