HTTP/1.1 200 OK Date: Wed, 01 Dec 2021 06:09:12 GMT Content-Type: text/html; charset=utf-8 Content-Length: 0 Connection: keep-alive Server: Tengine Last-Modified: Thu, 07 Jan 2021 07:50:31 GMT ETag: "5ff6bd47-0" ip_network: 15.46 Accept-Ranges: bytes X-Ser: BC9_lt-guangdong-zhuhai-2-cache-3, BC24_dx-lt-yd-zhejiang-huzhou-3-cache-8, BC109_US-DistColumbia-washingtonDC-1-cache-1, BC122_HK-xianggang-xianggang-4-cache-3