original.scala

  def encodeMapResponse(results: List[Match]): HttpResponse = {
    val response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK)
    val stream = new ByteArrayOutputStream(1024)
    val w = new ObjectOutputStream(stream)
    try {
      w.writeObject(results)
    } catch {
      case e:IOException => Console.err.println(id + ": " + e)
    }
    w.close

    val content = stream.toByteArray.toString

    response.setContent(copiedBuffer(content, UTF_8))

    response
  }

  def decodeMapResponse(response: HttpResponse): List[Match] = {
    var list = List[Match]()

    val cbuf:ChannelBuffer = response.getContent()
    Console.err.println(cbuf.toString("UTF-8"))
    if (cbuf.readable) {
      val stream = new ByteArrayInputStream(cbuf.toString("UTF-8").getBytes())
      val w = new ObjectInputStream(stream)
      try {
	list = w.readObject.asInstanceOf[List[Match]]
      } catch {
	case e:IOException => Console.err.println(e)
      }
      w.close
    }

    list
  }

revised.scala

  def encodeMapResponse(results: List[Match]): HttpResponse = {
    val response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK)
    val stream = new ByteArrayOutputStream(1024)
    val w = new ObjectOutputStream(stream)
    try {
      w.writeObject(results)
    } catch {
      case e:IOException => Console.err.println(id + ": " + e)
    }
    w.flush
    w.close

    val content = stream.toByteArray()

    val cbuf = ChannelBuffers.copiedBuffer(content)

    response.setContent(cbuf)

    response
  }

  def decodeMapResponse(response: HttpResponse): List[Match] = {
    var list = List[Match]()

    val cbuf:ChannelBuffer = response.getContent()
    var bytes = new Array[Byte](cbuf.readableBytes())

    cbuf.getBytes(cbuf.readerIndex(), bytes, 0, cbuf.readableBytes())

    if (cbuf.readable) {
      val stream = new ByteArrayInputStream(bytes)
      val w = new ObjectInputStream(stream)
      try {
	list = w.readObject.asInstanceOf[List[Match]]
      } catch {
	case e:IOException => Console.err.println(e)
      }
      w.close
    }

    list
  }