}
  }

  fun readBoolean(): Boolean {
    if (bytesLeft != 1L) throw ProtocolException("unexpected length: $bytesLeft at $this")
    return source.readByte().toInt() != 0
  }

  fun readBigInteger(): BigInteger {
    if (bytesLeft == 0L) throw ProtocolException("unexpected length: $bytesLeft at $this")
    val byteArray = source.readByteArray(bytesLeft)
    return BigInteger(byteArray)
  }