solve nginx 504 Gateway Time-out

            proxy_set_header remote_addr $E_remote_addr;

            proxy_set_header X-Forwarded-For $E_proxy_add_x_forwarded_for;

            proxy_http_version 1.1;

            proxy_connect_timeout 4s;

            proxy_read_timeout 30s;

            proxy_send_timeout 12s;

            proxy_connect_timeout 300s;

            proxy_read_timeout 300s;

            proxy_send_timeout 300s;

            proxy_set_header Upgrade $E_http_upgrade;

            proxy_set_header Connection "upgrade";

            }