最新服务器上的版本,以后用这个
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HTTP/1.1 100 Continue

HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 11 Aug 2017 13:22:00 GMT
Content-Type: image/jpeg
Content-Length: 62574
Connection: close
Cache-Control: max-age=7257600
Expires: Fri, 03 Nov 2017 13:22:00 GMT
Strict-Transport-Security: max-age=31536000; includeSubDomains
X-Frame-Option: DENY