HTTP/1.0 407 Proxy Authentication Required
Proxy-Authenticate: Basic realm="proxy"
Connection: close
Content-type: text/html; charset=utf-8

\xc3\xbf\xc3\xbbUDo you want ANSI color? (Y/n) 

SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.7

-ERR client ip is not in whitelist

HTTP/1.1 200 OK
content-type: application/json; charset=UTF-8
content-length: 534