This is what I tried
telnet www.google.com 80
Get HTTP/1.1 Host:www.google.com
This I what I receive back
HTTP/1.0 400 Bad
After issuing the request:
GET / HTTP/1.1
you also need input an empty line to show that your request has ended, otherwise, nothing will be returned.
Reference: http://blog.nullspace.io/day-208.html
$ telnet www.google.com 80
Trying 173.194.38.82...
Connected to www.google.com.
Escape character is '^]'.
GET / HTTP/1.1
HTTP/1.1 302 Found
Location: http://www.google.co.jp/
Cache-Control: private
Content-Type: text/html; charset=UTF-8
[.... skipped ....]