}
                    ip = (ip << 8) + b;
                }
                while (i < data.length && Character.isWhitespace(data[i])) {
                    i++;
                }
                j = i;
                while (j < data.length && !Character.isWhitespace(data[j])) {
                    j++;
                }

                name = new Name(line.substring(i, j), 0x20, null);

                    }
                    ip = (ip << 8) + b;
                }
                while (i < data.length && Character.isWhitespace(data[i])) {
                    i++;
                }
                j = i;
                while (j < data.length && !Character.isWhitespace(data[j])) {
                    j++;
                }

                name = new Name(tc.getConfig(), line.substring(i, j), 0x20, null);

    for (i in 0 until 16) {
      if (prefix.exhausted()) {
        break
      }
      val codePoint = prefix.readUtf8CodePoint()
      if (Character.isISOControl(codePoint) && !Character.isWhitespace(codePoint)) {
        return false
      }
    }
    return true
  } catch (_: EOFException) {
    return false // Truncated UTF-8 sequence.
  }

    private static void notBlank(String str, String message) {
        final int strLen = str != null ? str.length() : 0;
        if (strLen > 0) {
            for (int i = 0; i < strLen; i++) {
                if (!Character.isWhitespace(str.charAt(i))) {
                    return;
                }
            }
        }
        throw new IllegalArgumentException(message);
    }