$ telnet www.seznam.cz 80
Trying 77.75.76.3...
Connected to www.seznam.cz.
Escape character is '^]'.
GET / HTTP/1.1
HTTP/1.1 400 Bad Request
Connection: close
Content-Type: text/html
Content-Length: 349
Date: Wed, 24 Dec 2008 16:09:47 GMT
Server: lighttpd/1.4.13-szn13
400 - Bad Request
400 - Bad Request
Connection closed by foreign host.