code: func resolvedPeerAddrs(ss []string) (ret []torrent.Peer, err error) {
  	for _, s := range ss {
  		var addr *net.TCPAddr
  		addr, err = net.ResolveTCPAddr("tcp", s)
  		if err != nil {
  			return
  		}
  		ret = append(ret, torrent.Peer{
  			IP:   addr.IP,
  			Port: addr.Port,
  		})
  	}
  	return
  }
docs: // fmt.Fprintf(os.Stderr, "Usage: %s \n", os.Args[0])