Created
March 22, 2021 11:37
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package main | |
import ( | |
"flag" | |
"log" | |
"net" | |
"net/http" | |
) | |
var addr = flag.String("l", ":8000", "Listening address") | |
var dir = flag.String("d", ".", "serving directory") | |
var v4 = flag.Bool("4", false, "serving ipv4 only") | |
var v6 = flag.Bool("6", false, "serving ipv6 only") | |
func main() { | |
flag.Parse() | |
fs := http.FileServer(http.Dir(*dir)) | |
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { | |
log.Printf("%s %s %s %s", r.RemoteAddr, r.Method, r.URL.Path, r.UserAgent()) | |
fs.ServeHTTP(w, r) | |
}) | |
var ln net.Listener | |
var err error | |
switch { | |
case *v4 && !*v6: | |
log.Printf("Listening on %v (ipv4)", *addr) | |
ln, err = net.Listen("tcp4", *addr) | |
case *v6 && !*v4: | |
log.Printf("Listening on %v (ipv6)", *addr) | |
ln, err = net.Listen("tcp6", *addr) | |
default: | |
log.Printf("Listening on %v", *addr) | |
ln, err = net.Listen("tcp", *addr) | |
} | |
if err != nil { | |
log.Fatal(err) | |
} | |
err = http.Serve(ln, nil) | |
if err != nil { | |
log.Fatal(err) | |
} | |
} |
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