How to make a HTTP 1.1 request manually

[ATC]

For debugging CGI scripts etc. it is sometimes necessary to perform HTTP queries manually using telnet. However, the HTTP 1.1 protocol is very specific as to how these requests should be formatted and few servers have useful error messages.

[ATC]

The correct format is:
"GET /path/to/document.extension HTTP/1.1"
"HOST: hostname.domain.tld"
"(blank line)"

More info can be found in RFC2068