name.equals("Cookie", ignoreCase = true) ||
    name.equals("Proxy-Authorization", ignoreCase = true) ||
    name.equals("Set-Cookie", ignoreCase = true)

internal fun Char.parseHexDigit(): Int =
  when (this) {
    in '0'..'9' -> this - '0'
    in 'a'..'f' -> this - 'a' + 10
    in 'A'..'F' -> this - 'A' + 10
    else -> -1
  }