else -> InetAddress.getByName(domainName)
          }
        }

        else -> throw ProtocolException("unsupported address type: $addressType")
      }

    val port = fromSource.readShort() and 0xffff

    when (command) {
      COMMAND_CONNECT -> {
        val toSocket = Socket(toAddress, port)
        val localAddress = toSocket.localAddress.address
        if (localAddress.size != 4) {