I am a beginner in HTTP and web sockets.
I'm trying to test an HTTP connection via Telnet with PuTTY.
I do a connection to www.geekthis.net
(for example) at port 80.
It connect and when I write GET /index.php HTTP/1.0
and press Enter.
It returns a 408 error "request time out".
Did you sent an empty line after the GET?
Basically you need two "enters" after the GET.