OpenSSH8.2p1 Ubuntu 4ubuntu0.11\r\n

SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.11\r\n

HTTP/1.1 403 Forbidden 
Content-Type: text/plain; charset=utf-8
Proxy-Authenticate: Basic realm=""

errorMsg: Unsupported protocol

HTTP/1.1 407 Proxy Authentication Required
Content-Type: text/plain; charset=utf-8
Proxy-Authenticate: Basic realm="proxy"

HTTP/1.1 407 Proxy Authentication Required
Content-Type: text/plain; charset=utf-8
Proxy-Authenticate: Basic realm="proxy"

HTTP/1.1 407 Proxy Authentication Required
Content-Type: text/plain; charset=utf-8
Proxy-Authenticate: Basic realm="proxy"

HTTP/1.1 407 Proxy Authentication Required
Proxy-Authenticate: Basic realm=""

HTTP/1.1 407 Proxy Authentication Required
Proxy-Authenticate: Basic realm=""

Proxy Authentication Required