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

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

Socks4A

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

nginx1.16.0

HTTP/1.1 200 OK
Server: nginx/1.16.0
Date: Thu, 16 Jan 2025 05:21:30 GMT
Content-Type: text/html
Content-Length: 2
Last-Modified: Fri, 17 Mar 2023 12:19:23 GMT
Connection: keep-alive
ETag: "64145acb-2"
Accept-Ranges: bytes

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