net.go

package main

import (
	"fmt"
	"net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "Method: %s\n", r.Method)
}

func main() {
	http.HandleFunc("/", handler)
	http.ListenAndServe(":8080", nil)
}

output

$ telnet 127.0.0.1 8080
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GEM / HTTP/1.1
Host: example.org

HTTP/1.1 200 OK
Content-Type: text/plain; charset=utf-8
Content-Length: 12
Date: Tue, 20 Aug 2013 01:37:33 GMT

Method: GEM
LINK / HTTP/1.1

HTTP/1.1 200 OK
Content-Type: text/plain; charset=utf-8
Content-Length: 13
Date: Tue, 20 Aug 2013 01:37:48 GMT

Method: LINK
PUN / HTTP/1.1
Host: example.org

HTTP/1.1 200 OK
Content-Type: text/plain; charset=utf-8
Content-Length: 12
Date: Tue, 20 Aug 2013 01:37:57 GMT

Method: PUN
POSH / HTTP/1.1

HTTP/1.1 200 OK
Content-Type: text/plain; charset=utf-8
Content-Length: 13
Date: Tue, 20 Aug 2013 01:38:04 GMT

Method: POSH