package yatwiki3

import (
	"crypto/md5"
	"encoding/hex"
	"net/http"
	"strings"
)

func Author(r *http.Request) string {
	userAgentHash := md5.Sum([]byte(r.UserAgent()))
	ipAddr := strings.TrimRight(strings.TrimRight(r.RemoteAddr, `0123456789`), `:`) // trim trailing port; IPv4 and IPv6-safe

	return ipAddr + "-" + hex.EncodeToString(userAgentHash[:])[:6]
}