proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_buffering off;
client_max_body_size 0;
proxy_connect_timeout  3600s;
proxy_read_timeout  3600s;
proxy_send_timeout  3600s;
send_timeout  3600s;
proxy_redirect default;
proxy_set_header X-Real-IP  $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;