@Override
 public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception {
   Channel ch = e.getChannel();
   Throwable cause = e.getCause();
   if (cause instanceof TooLongFrameException) {
     sendError(ctx, HttpResponseStatus.BAD_REQUEST);
     return;
   }
   if (cause != null) {
     if (cause.getClass().equals(IOException.class)) {
       LOGGER.debug("Connection error: " + cause);
       StartStopListenerDelegate startStopListenerDelegate =
           (StartStopListenerDelegate) ctx.getAttachment();
       if (startStopListenerDelegate != null) {
         LOGGER.debug("Premature end, stopping...");
         startStopListenerDelegate.stop();
       }
     } else if (!cause.getClass().equals(ClosedChannelException.class)) {
       LOGGER.debug("Caught exception: " + cause);
     }
   }
   if (ch.isConnected()) {
     sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR);
   }
   e.getChannel().close();
 }
  private void writeResponse(
      ChannelHandlerContext ctx, MessageEvent e, RequestV2 request, InetAddress ia) {
    // Decide whether to close the connection or not.
    boolean close =
        HttpHeaders.Values.CLOSE.equalsIgnoreCase(
                nettyRequest.headers().get(HttpHeaders.Names.CONNECTION))
            || nettyRequest.getProtocolVersion().equals(HttpVersion.HTTP_1_0)
                && !HttpHeaders.Values.KEEP_ALIVE.equalsIgnoreCase(
                    nettyRequest.headers().get(HttpHeaders.Names.CONNECTION));

    // Build the response object.
    HttpResponse response;
    if (request.getLowRange() != 0 || request.getHighRange() != 0) {
      response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.PARTIAL_CONTENT);
    } else {
      String soapAction = nettyRequest.headers().get("SOAPACTION");

      if (soapAction != null && soapAction.contains("X_GetFeatureList")) {
        LOGGER.debug("Invalid action in SOAPACTION: " + soapAction);
        response =
            new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.INTERNAL_SERVER_ERROR);
      } else {
        response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
      }
    }

    StartStopListenerDelegate startStopListenerDelegate =
        new StartStopListenerDelegate(ia.getHostAddress());
    // Attach it to the context so it can be invoked if connection is reset unexpectedly
    ctx.setAttachment(startStopListenerDelegate);

    try {
      request.answer(response, e, close, startStopListenerDelegate);
    } catch (IOException e1) {
      LOGGER.trace("HTTP request V2 IO error: " + e1.getMessage());
      // note: we don't call stop() here in a finally block as
      // answer() is non-blocking. we only (may) need to call it
      // here in the case of an exception. it's a no-op if it's
      // already been called
      startStopListenerDelegate.stop();
    }
  }
  public void answer(OutputStream output, StartStopListenerDelegate startStopListenerDelegate)
      throws IOException {
    this.output = output;

    long CLoverride = -2; // 0 and above are valid Content-Length values, -1 means omit
    if (lowRange != 0 || highRange != 0) {
      output(output, http10 ? HTTP_206_OK_10 : HTTP_206_OK);
    } else {
      if (soapaction != null && soapaction.contains("X_GetFeatureList")) {
        //  If we don't return a 500 error, Samsung 2012 TVs time out.
        output(output, HTTP_500);
      } else {
        output(output, http10 ? HTTP_200_OK_10 : HTTP_200_OK);
      }
    }

    StringBuilder response = new StringBuilder();
    DLNAResource dlna = null;
    boolean xbox = mediaRenderer.isXBOX();

    // Samsung 2012 TVs have a problematic preceding slash that needs to be removed.
    if (argument.startsWith("/")) {
      logger.trace("Stripping preceding slash from: " + argument);
      argument = argument.substring(1);
    }

    if ((method.equals("GET") || method.equals("HEAD")) && argument.startsWith("console/")) {
      output(output, "Content-Type: text/html");
      response.append(HTMLConsole.servePage(argument.substring(8)));
    } else if ((method.equals("GET") || method.equals("HEAD")) && argument.startsWith("get/")) {
      String id = argument.substring(argument.indexOf("get/") + 4, argument.lastIndexOf("/"));
      id = id.replace("%24", "$"); // popcorn hour ?
      List<DLNAResource> files =
          PMS.get().getRootFolder(mediaRenderer).getDLNAResources(id, false, 0, 0, mediaRenderer);
      if (transferMode != null) {
        output(output, "TransferMode.DLNA.ORG: " + transferMode);
      }
      if (files.size() == 1) {
        // DNLAresource was found.
        dlna = files.get(0);
        String fileName = argument.substring(argument.lastIndexOf("/") + 1);

        if (fileName.startsWith("thumbnail0000")) {
          // This is a request for a thumbnail file.
          output(output, "Content-Type: " + dlna.getThumbnailContentType());
          output(output, "Accept-Ranges: bytes");
          output(output, "Expires: " + getFUTUREDATE() + " GMT");
          output(output, "Connection: keep-alive");
          if (mediaRenderer.isMediaParserV2()) {
            dlna.checkThumbnail();
          }
          inputStream = dlna.getThumbnailInputStream();
        } else if (fileName.indexOf("subtitle0000") > -1) {
          // This is a request for a subtitle file
          output(output, "Content-Type: text/plain");
          output(output, "Expires: " + getFUTUREDATE() + " GMT");
          List<DLNAMediaSubtitle> subs = dlna.getMedia().getSubtitleTracksList();

          if (subs != null && !subs.isEmpty()) {
            // TODO: maybe loop subs to get the requested subtitle type instead of using the first
            // one
            DLNAMediaSubtitle sub = subs.get(0);
            if (sub.isExternal()) {
              inputStream = new java.io.FileInputStream(sub.getExternalFile());
            }
          }
        } else {
          // This is a request for a regular file.
          String name = dlna.getDisplayName(mediaRenderer);
          inputStream =
              dlna.getInputStream(
                  Range.create(lowRange, highRange, timeseek, timeRangeEnd), mediaRenderer);
          if (inputStream == null) {
            // No inputStream indicates that transcoding / remuxing probably crashed.
            logger.error("There is no inputstream to return for " + name);
          } else {
            startStopListenerDelegate.start(dlna);
            output(output, "Content-Type: " + getRendererMimeType(dlna.mimeType(), mediaRenderer));

            if (!configuration.isDisableSubtitles()) {
              // Some renderers (like Samsung devices) allow a custom header for a subtitle URL
              String subtitleHttpHeader = mediaRenderer.getSubtitleHttpHeader();

              if (subtitleHttpHeader != null && !"".equals(subtitleHttpHeader)) {
                // Device allows a custom subtitle HTTP header; construct it
                List<DLNAMediaSubtitle> subs = dlna.getMedia().getSubtitleTracksList();

                if (subs != null && !subs.isEmpty()) {
                  DLNAMediaSubtitle sub = subs.get(0);
                  String subtitleUrl;
                  String subExtension = sub.getType().getExtension();

                  if (isNotBlank(subExtension)) {
                    subtitleUrl =
                        "http://"
                            + PMS.get().getServer().getHost()
                            + ':'
                            + PMS.get().getServer().getPort()
                            + "/get/"
                            + id
                            + "/subtitle0000."
                            + subExtension;
                  } else {
                    subtitleUrl =
                        "http://"
                            + PMS.get().getServer().getHost()
                            + ':'
                            + PMS.get().getServer().getPort()
                            + "/get/"
                            + id
                            + "/subtitle0000";
                  }

                  output(output, subtitleHttpHeader + ": " + subtitleUrl);
                }
              }
            }

            final DLNAMediaInfo media = dlna.getMedia();

            if (media != null) {
              if (StringUtils.isNotBlank(media.getContainer())) {
                name += " [container: " + media.getContainer() + "]";
              }

              if (StringUtils.isNotBlank(media.getCodecV())) {
                name += " [video: " + media.getCodecV() + "]";
              }
            }

            PMS.get().getFrame().setStatusLine("Serving " + name);

            // Response generation:
            // We use -1 for arithmetic convenience but don't send it as a value.
            // If Content-Length < 0 we omit it, for Content-Range we use '*' to signify
            // unspecified.

            boolean chunked = mediaRenderer.isChunkedTransfer();

            // Determine the total size. Note: when transcoding the length is
            // not known in advance, so DLNAMediaInfo.TRANS_SIZE will be returned instead.

            long totalsize = dlna.length(mediaRenderer);

            if (chunked && totalsize == DLNAMediaInfo.TRANS_SIZE) {
              // In chunked mode we try to avoid arbitrary values.
              totalsize = -1;
            }

            long remaining = totalsize - lowRange;
            long requested = highRange - lowRange;

            if (requested != 0) {
              // Determine the range (i.e. smaller of known or requested bytes)
              long bytes = remaining > -1 ? remaining : inputStream.available();

              if (requested > 0 && bytes > requested) {
                bytes = requested + 1;
              }

              // Calculate the corresponding highRange (this is usually redundant).
              highRange = lowRange + bytes - (bytes > 0 ? 1 : 0);

              logger.trace(
                  (chunked ? "Using chunked response. " : "") + "Sending " + bytes + " bytes.");

              output(
                  output,
                  "Content-Range: bytes "
                      + lowRange
                      + "-"
                      + (highRange > -1 ? highRange : "*")
                      + "/"
                      + (totalsize > -1 ? totalsize : "*"));

              // Content-Length refers to the current chunk size here, though in chunked
              // mode if the request is open-ended and totalsize is unknown we omit it.
              if (chunked && requested < 0 && totalsize < 0) {
                CLoverride = -1;
              } else {
                CLoverride = bytes;
              }
            } else {
              // Content-Length refers to the total remaining size of the stream here.
              CLoverride = remaining;
            }

            if (contentFeatures != null) {
              output(output, "ContentFeatures.DLNA.ORG: " + dlna.getDlnaContentFeatures());
            }

            if (dlna.getPlayer() == null || xbox) {
              output(output, "Accept-Ranges: bytes");
            }

            output(output, "Connection: keep-alive");
          }
        }
      }
    } else if ((method.equals("GET") || method.equals("HEAD"))
        && (argument.toLowerCase().endsWith(".png")
            || argument.toLowerCase().endsWith(".jpg")
            || argument.toLowerCase().endsWith(".jpeg"))) {
      if (argument.toLowerCase().endsWith(".png")) {
        output(output, "Content-Type: image/png");
      } else {
        output(output, "Content-Type: image/jpeg");
      }
      output(output, "Accept-Ranges: bytes");
      output(output, "Connection: keep-alive");
      output(output, "Expires: " + getFUTUREDATE() + " GMT");
      inputStream = getResourceInputStream(argument);
    } else if ((method.equals("GET") || method.equals("HEAD"))
        && (argument.equals("description/fetch") || argument.endsWith("1.0.xml"))) {
      String profileName = configuration.getProfileName();
      output(output, CONTENT_TYPE);
      output(output, "Cache-Control: no-cache");
      output(output, "Expires: 0");
      output(output, "Accept-Ranges: bytes");
      output(output, "Connection: keep-alive");
      inputStream =
          getResourceInputStream((argument.equals("description/fetch") ? "PMS.xml" : argument));

      if (argument.equals("description/fetch")) {
        byte b[] = new byte[inputStream.available()];
        inputStream.read(b);
        String s = new String(b);
        s = s.replace("[uuid]", PMS.get().usn()); // .substring(0, PMS.get().usn().length()-2));
        s = s.replace("[host]", PMS.get().getServer().getHost());
        s = s.replace("[port]", "" + PMS.get().getServer().getPort());
        if (xbox) {
          logger.debug("DLNA changes for Xbox 360");
          s =
              s.replace(
                  "PS3 Media Server",
                  "PS3 Media Server [" + profileName + "] : Windows Media Connect");
          s =
              s.replace(
                  "<modelName>PMS</modelName>", "<modelName>Windows Media Connect</modelName>");
          s =
              s.replace(
                  "<serviceList>",
                  "<serviceList>"
                      + CRLF
                      + "<service>"
                      + CRLF
                      + "<serviceType>urn:microsoft.com:service:X_MS_MediaReceiverRegistrar:1</serviceType>"
                      + CRLF
                      + "<serviceId>urn:microsoft.com:serviceId:X_MS_MediaReceiverRegistrar</serviceId>"
                      + CRLF
                      + "<SCPDURL>/upnp/mrr/scpd</SCPDURL>"
                      + CRLF
                      + "<controlURL>/upnp/mrr/control</controlURL>"
                      + CRLF
                      + "</service>"
                      + CRLF);

        } else {
          s = s.replace("PS3 Media Server", "PS3 Media Server [" + profileName + "]");
        }
        inputStream = new ByteArrayInputStream(s.getBytes());
      }
    } else if (method.equals("POST")
        && (argument.contains("MS_MediaReceiverRegistrar_control")
            || argument.contains("mrr/control"))) {
      output(output, CONTENT_TYPE_UTF8);
      response.append(HTTPXMLHelper.XML_HEADER);
      response.append(CRLF);
      response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
      response.append(CRLF);
      if (soapaction != null && soapaction.contains("IsAuthorized")) {
        response.append(HTTPXMLHelper.XBOX_2);
        response.append(CRLF);
      } else if (soapaction != null && soapaction.contains("IsValidated")) {
        response.append(HTTPXMLHelper.XBOX_1);
        response.append(CRLF);
      }
      response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
      response.append(CRLF);
    } else if (method.equals("POST") && argument.endsWith("upnp/control/connection_manager")) {
      output(output, CONTENT_TYPE_UTF8);
      if (soapaction != null && soapaction.indexOf("ConnectionManager:1#GetProtocolInfo") > -1) {
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.PROTOCOLINFO_RESPONSE);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      }
    } else if (method.equals("SUBSCRIBE")) {
      if (soapaction == null) {
        // Ignore this
        return;
      }
      output(output, CONTENT_TYPE_UTF8);
      output(output, "Content-Length: 0");
      output(output, "Connection: close");
      output(output, "SID: " + PMS.get().usn());
      output(output, "Server: " + PMS.get().getServerName());
      output(output, "Timeout: Second-1800");
      output(output, "");
      output.flush();
      // output.close();

      String cb = soapaction.replace("<", "").replace(">", "");

      try {
        URL soapActionUrl = new URL(cb);
        String addr = soapActionUrl.getHost();
        int port = soapActionUrl.getPort();
        Socket sock = new Socket(addr, port);
        OutputStream out = sock.getOutputStream();

        output(out, "NOTIFY /" + argument + " HTTP/1.1");
        output(out, "SID: " + PMS.get().usn());
        output(out, "SEQ: " + 0);
        output(out, "NT: upnp:event");
        output(out, "NTS: upnp:propchange");
        output(out, "HOST: " + addr + ":" + port);
        output(out, CONTENT_TYPE_UTF8);
        sock.close();
      } catch (MalformedURLException ex) {
        logger.debug("Cannot parse address and port from soap action \"" + soapaction + "\"", ex);
      }

      if (argument.contains("connection_manager")) {
        response.append(
            HTTPXMLHelper.eventHeader("urn:schemas-upnp-org:service:ConnectionManager:1"));
        response.append(HTTPXMLHelper.eventProp("SinkProtocolInfo"));
        response.append(HTTPXMLHelper.eventProp("SourceProtocolInfo"));
        response.append(HTTPXMLHelper.eventProp("CurrentConnectionIDs"));
        response.append(HTTPXMLHelper.EVENT_FOOTER);
      } else if (argument.contains("content_directory")) {
        response.append(
            HTTPXMLHelper.eventHeader("urn:schemas-upnp-org:service:ContentDirectory:1"));
        response.append(HTTPXMLHelper.eventProp("TransferIDs"));
        response.append(HTTPXMLHelper.eventProp("ContainerUpdateIDs"));
        response.append(
            HTTPXMLHelper.eventProp("SystemUpdateID", "" + DLNAResource.getSystemUpdateId()));
        response.append(HTTPXMLHelper.EVENT_FOOTER);
      }
    } else if (method.equals("POST") && argument.endsWith("upnp/control/content_directory")) {
      output(output, CONTENT_TYPE_UTF8);

      if (soapaction != null && soapaction.indexOf("ContentDirectory:1#GetSystemUpdateID") > -1) {
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.GETSYSTEMUPDATEID_HEADER);
        response.append(CRLF);
        response.append("<Id>").append(DLNAResource.getSystemUpdateId()).append("</Id>");
        response.append(CRLF);
        response.append(HTTPXMLHelper.GETSYSTEMUPDATEID_FOOTER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      } else if (soapaction != null
          && soapaction.indexOf("ContentDirectory:1#GetSortCapabilities") > -1) {
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SORTCAPS_RESPONSE);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      } else if (soapaction != null
          && soapaction.indexOf("ContentDirectory:1#X_GetFeatureList")
              > -1) { // Added for Samsung 2012 TVs
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.UPNP_INVALID_ACTION);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      } else if (soapaction != null
          && soapaction.indexOf("ContentDirectory:1#GetSearchCapabilities") > -1) {
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SEARCHCAPS_RESPONSE);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      } else if (soapaction != null
          && (soapaction.contains("ContentDirectory:1#Browse")
              || soapaction.contains("ContentDirectory:1#Search"))) {
        objectID = getEnclosingValue(content, "<ObjectID>", "</ObjectID>");
        String containerID = null;
        if (isEmpty(objectID) && xbox) {
          containerID = getEnclosingValue(content, "<ContainerID>", "</ContainerID>");
          if (containerID == null || !containerID.contains("$")) {
            objectID = "0";
          } else {
            objectID = containerID;
            containerID = null;
          }
        }
        Object sI = getEnclosingValue(content, "<StartingIndex>", "</StartingIndex>");
        Object rC = getEnclosingValue(content, "<RequestedCount>", "</RequestedCount>");
        browseFlag = getEnclosingValue(content, "<BrowseFlag>", "</BrowseFlag>");
        if (sI != null) {
          startingIndex = Integer.parseInt(sI.toString());
        }
        if (rC != null) {
          requestCount = Integer.parseInt(rC.toString());
        }

        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        if (soapaction != null && soapaction.contains("ContentDirectory:1#Search")) {
          response.append(HTTPXMLHelper.SEARCHRESPONSE_HEADER);
        } else {
          response.append(HTTPXMLHelper.BROWSERESPONSE_HEADER);
        }
        response.append(CRLF);
        response.append(HTTPXMLHelper.RESULT_HEADER);

        response.append(HTTPXMLHelper.DIDL_HEADER);

        if (soapaction != null && soapaction.contains("ContentDirectory:1#Search")) {
          browseFlag = "BrowseDirectChildren";
        }

        // XBOX virtual containers ... doh
        String searchCriteria = null;
        if (xbox
            && configuration.getUseCache()
            && PMS.get().getLibrary() != null
            && containerID != null) {
          if (containerID.equals("7") && PMS.get().getLibrary().getAlbumFolder() != null) {
            objectID = PMS.get().getLibrary().getAlbumFolder().getResourceId();
          } else if (containerID.equals("6") && PMS.get().getLibrary().getArtistFolder() != null) {
            objectID = PMS.get().getLibrary().getArtistFolder().getResourceId();
          } else if (containerID.equals("5") && PMS.get().getLibrary().getGenreFolder() != null) {
            objectID = PMS.get().getLibrary().getGenreFolder().getResourceId();
          } else if (containerID.equals("F")
              && PMS.get().getLibrary().getPlaylistFolder() != null) {
            objectID = PMS.get().getLibrary().getPlaylistFolder().getResourceId();
          } else if (containerID.equals("4") && PMS.get().getLibrary().getAllFolder() != null) {
            objectID = PMS.get().getLibrary().getAllFolder().getResourceId();
          } else if (containerID.equals("1")) {
            String artist = getEnclosingValue(content, "upnp:artist = &quot;", "&quot;)");
            if (artist != null) {
              objectID = PMS.get().getLibrary().getArtistFolder().getResourceId();
              searchCriteria = artist;
            }
          }
        }

        List<DLNAResource> files =
            PMS.get()
                .getRootFolder(mediaRenderer)
                .getDLNAResources(
                    objectID,
                    browseFlag != null && browseFlag.equals("BrowseDirectChildren"),
                    startingIndex,
                    requestCount,
                    mediaRenderer);

        if (searchCriteria != null && files != null) {
          for (int i = files.size() - 1; i >= 0; i--) {
            if (!files.get(i).getName().equals(searchCriteria)) {
              files.remove(i);
            }
          }

          if (files.size() > 0) {
            files = files.get(0).getChildren();
          }
        }

        int minus = 0;
        if (files != null) {
          for (DLNAResource uf : files) {
            if (xbox && containerID != null) {
              uf.setFakeParentId(containerID);
            }

            if (uf.isCompatible(mediaRenderer)
                && (uf.getPlayer() == null || uf.getPlayer().isPlayerCompatible(mediaRenderer))) {
              response.append(uf.getDidlString(mediaRenderer));
            } else {
              minus++;
            }
          }
        }

        response.append(HTTPXMLHelper.DIDL_FOOTER);
        response.append(HTTPXMLHelper.RESULT_FOOTER);
        response.append(CRLF);

        int filessize = 0;
        if (files != null) {
          filessize = files.size();
        }

        response.append("<NumberReturned>").append(filessize - minus).append("</NumberReturned>");
        response.append(CRLF);
        DLNAResource parentFolder = null;

        if (files != null && filessize > 0) {
          parentFolder = files.get(0).getParent();
        }

        if (browseFlag != null
            && browseFlag.equals("BrowseDirectChildren")
            && mediaRenderer.isMediaParserV2()
            && mediaRenderer.isDLNATreeHack()) {
          // with the new parser, files are parsed and analyzed *before*
          // creating the DLNA tree, every 10 items (the ps3 asks 10 by 10),
          // so we do not know exactly the total number of items in the DLNA folder to send
          // (regular files, plus the #transcode folder, maybe the #imdb one, also files can be
          // invalidated and hidden if format is broken or encrypted, etc.).
          // let's send a fake total size to force the renderer to ask following items
          int totalCount = startingIndex + requestCount + 1; // returns 11 when 10 asked

          if (filessize - minus <= 0) { // if no more elements, send startingIndex
            totalCount = startingIndex;
          }

          response.append("<TotalMatches>").append(totalCount).append("</TotalMatches>");
        } else if (browseFlag != null && browseFlag.equals("BrowseDirectChildren")) {
          response
              .append("<TotalMatches>")
              .append(((parentFolder != null) ? parentFolder.childrenNumber() : filessize) - minus)
              .append("</TotalMatches>");
        } else {
          // from upnp spec: If BrowseMetadata is specified in the BrowseFlags then TotalMatches = 1
          response.append("<TotalMatches>1</TotalMatches>");
        }

        response.append(CRLF);
        response.append("<UpdateID>");

        if (parentFolder != null) {
          response.append(parentFolder.getUpdateId());
        } else {
          response.append("1");
        }

        response.append("</UpdateID>");
        response.append(CRLF);
        if (soapaction != null && soapaction.contains("ContentDirectory:1#Search")) {
          response.append(HTTPXMLHelper.SEARCHRESPONSE_FOOTER);
        } else {
          response.append(HTTPXMLHelper.BROWSERESPONSE_FOOTER);
        }
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
        // logger.trace(response.toString());
      }
    }

    output(output, "Server: " + PMS.get().getServerName());

    if (response.length() > 0) {
      byte responseData[] = response.toString().getBytes("UTF-8");
      output(output, "Content-Length: " + responseData.length);
      output(output, "");

      if (!method.equals("HEAD")) {
        output.write(responseData);
        // logger.trace(response.toString());
      }
    } else if (inputStream != null) {
      if (CLoverride > -2) {
        // Content-Length override has been set, send or omit as appropriate
        if (CLoverride > -1 && CLoverride != DLNAMediaInfo.TRANS_SIZE) {
          // Since PS3 firmware 2.50, it is wiser not to send an arbitrary Content-Length,
          // as the PS3 will display a network error and request the last seconds of the
          // transcoded video. Better to send no Content-Length at all.
          output(output, "Content-Length: " + CLoverride);
        }
      } else {
        int cl = inputStream.available();
        logger.trace("Available Content-Length: " + cl);
        output(output, "Content-Length: " + cl);
      }

      if (timeseek > 0 && dlna != null) {
        String timeseekValue = DLNAMediaInfo.getDurationString(timeseek);
        String timetotalValue = dlna.getMedia().getDurationString();
        output(
            output,
            "TimeSeekRange.dlna.org: npt="
                + timeseekValue
                + "-"
                + timetotalValue
                + "/"
                + timetotalValue);
        output(
            output,
            "X-Seek-Range: npt=" + timeseekValue + "-" + timetotalValue + "/" + timetotalValue);
      }

      output(output, "");
      int sendB = 0;

      if (lowRange != DLNAMediaInfo.ENDFILE_POS && !method.equals("HEAD")) {
        sendB =
            sendBytes(inputStream); // , ((lowRange > 0 && highRange > 0)?(highRange-lowRange):-1)
      }

      logger.trace("Sending stream: " + sendB + " bytes of " + argument);
      PMS.get().getFrame().setStatusLine(null);
    } else { // inputStream is null
      if (lowRange > 0 && highRange > 0) {
        output(output, "Content-Length: " + (highRange - lowRange + 1));
      } else {
        output(output, "Content-Length: 0");
      }

      output(output, "");
    }
  }
  /**
   * Construct a proper HTTP response to a received request. After the response has been created, it
   * is sent and the resulting {@link ChannelFuture} object is returned. See <a
   * href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html">RFC-2616</a> for HTTP header
   * field definitions.
   *
   * @param output The {@link HttpResponse} object that will be used to construct the response.
   * @param e The {@link MessageEvent} object used to communicate with the client that sent the
   *     request.
   * @param close Set to true to close the channel after sending the response. By default the
   *     channel is not closed after sending.
   * @param startStopListenerDelegate The {@link StartStopListenerDelegate} object that is used to
   *     notify plugins that the {@link DLNAResource} is about to start playing.
   * @return The {@link ChannelFuture} object via which the response was sent.
   * @throws IOException
   */
  public ChannelFuture answer(
      HttpResponse output,
      MessageEvent e,
      final boolean close,
      final StartStopListenerDelegate startStopListenerDelegate)
      throws IOException {
    ChannelFuture future = null;
    long CLoverride = -2; // 0 and above are valid Content-Length values, -1 means omit
    StringBuilder response = new StringBuilder();
    DLNAResource dlna = null;
    boolean xbox = mediaRenderer.isXBOX();

    // Samsung 2012 TVs have a problematic preceding slash that needs to be removed.
    if (argument.startsWith("/")) {
      LOGGER.trace("Stripping preceding slash from: " + argument);
      argument = argument.substring(1);
    }

    if ((method.equals("GET") || method.equals("HEAD")) && argument.startsWith("console/")) {
      // Request to output a page to the HTLM console.
      output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "text/html");
      response.append(HTMLConsole.servePage(argument.substring(8)));
    } else if ((method.equals("GET") || method.equals("HEAD")) && argument.startsWith("get/")) {
      // Request to retrieve a file

      // Extract the resource id from the argument string.
      String id = argument.substring(argument.indexOf("get/") + 4, argument.lastIndexOf("/"));

      // Some clients escape the separators in their request, unescape them.
      id = id.replace("%24", "$");

      // Retrieve the DLNAresource itself.
      List<DLNAResource> files =
          PMS.get().getRootFolder(mediaRenderer).getDLNAResources(id, false, 0, 0, mediaRenderer);

      if (transferMode != null) {
        output.setHeader("TransferMode.DLNA.ORG", transferMode);
      }

      if (files.size() == 1) {
        // DNLAresource was found.
        dlna = files.get(0);
        String fileName = argument.substring(argument.lastIndexOf("/") + 1);

        if (fileName.startsWith("thumbnail0000")) {
          // This is a request for a thumbnail file.
          output.setHeader(HttpHeaders.Names.CONTENT_TYPE, dlna.getThumbnailContentType());
          output.setHeader(HttpHeaders.Names.ACCEPT_RANGES, "bytes");
          output.setHeader(HttpHeaders.Names.EXPIRES, getFUTUREDATE() + " GMT");
          output.setHeader(HttpHeaders.Names.CONNECTION, "keep-alive");

          if (mediaRenderer.isMediaParserV2()) {
            dlna.checkThumbnail();
          }

          inputStream = dlna.getThumbnailInputStream();
        } else if (fileName.indexOf("subtitle0000") > -1) {
          // This is a request for a subtitle file
          output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "text/plain");
          output.setHeader(HttpHeaders.Names.EXPIRES, getFUTUREDATE() + " GMT");
          List<DLNAMediaSubtitle> subs = dlna.getMedia().getSubtitlesCodes();

          if (subs != null && !subs.isEmpty()) {
            // TODO: maybe loop subs to get the requested subtitle type instead of using the first
            // one
            DLNAMediaSubtitle sub = subs.get(0);
            inputStream = new java.io.FileInputStream(sub.getFile());
          }
        } else {
          // This is a request for a regular file.

          // If range has not been initialized yet and the DLNAResource has its
          // own start and end defined, initialize range with those values before
          // requesting the input stream.
          Range.Time splitRange = dlna.getSplitRange();

          if (range.getStart() == null && splitRange.getStart() != null) {
            range.setStart(splitRange.getStart());
          }

          if (range.getEnd() == null && splitRange.getEnd() != null) {
            range.setEnd(splitRange.getEnd());
          }

          inputStream =
              dlna.getInputStream(
                  Range.create(lowRange, highRange, range.getStart(), range.getEnd()),
                  mediaRenderer);

          // Some renderers (like Samsung devices) allow a custom header for a subtitle URL
          String subtitleHttpHeader = mediaRenderer.getSubtitleHttpHeader();

          if (subtitleHttpHeader != null && !"".equals(subtitleHttpHeader)) {
            // Device allows a custom subtitle HTTP header; construct it
            List<DLNAMediaSubtitle> subs = dlna.getMedia().getSubtitlesCodes();

            if (subs != null && !subs.isEmpty()) {
              DLNAMediaSubtitle sub = subs.get(0);

              int type = sub.getType();

              if (type < DLNAMediaSubtitle.subExtensions.length) {
                String strType = DLNAMediaSubtitle.subExtensions[type - 1];
                String subtitleUrl =
                    "http://"
                        + PMS.get().getServer().getHost()
                        + ':'
                        + PMS.get().getServer().getPort()
                        + "/get/"
                        + id
                        + "/subtitle0000."
                        + strType;
                output.setHeader(subtitleHttpHeader, subtitleUrl);
              }
            }
          }

          String name = dlna.getDisplayName(mediaRenderer);

          if (inputStream == null) {
            // No inputStream indicates that transcoding / remuxing probably crashed.
            LOGGER.error("There is no inputstream to return for " + name);
          } else {
            // Notify plugins that the DLNAresource is about to start playing
            startStopListenerDelegate.start(dlna);

            // Try to determine the content type of the file
            String rendererMimeType = getRendererMimeType(dlna.mimeType(), mediaRenderer);

            if (rendererMimeType != null && !"".equals(rendererMimeType)) {
              output.setHeader(HttpHeaders.Names.CONTENT_TYPE, rendererMimeType);
            }

            final DLNAMediaInfo media = dlna.getMedia();
            if (media != null) {
              if (StringUtils.isNotBlank(media.getContainer())) {
                name += " [container: " + media.getContainer() + "]";
              }

              if (StringUtils.isNotBlank(media.getCodecV())) {
                name += " [video: " + media.getCodecV() + "]";
              }
            }

            PMS.get().getFrame().setStatusLine("Serving " + name);

            // Response generation:
            // We use -1 for arithmetic convenience but don't send it as a value.
            // If Content-Length < 0 we omit it, for Content-Range we use '*' to signify
            // unspecified.

            boolean chunked = mediaRenderer.isChunkedTransfer();

            // Determine the total size. Note: when transcoding the length is
            // not known in advance, so DLNAMediaInfo.TRANS_SIZE will be returned instead.

            long totalsize = dlna.length(mediaRenderer);

            if (chunked && totalsize == DLNAMediaInfo.TRANS_SIZE) {
              // In chunked mode we try to avoid arbitrary values.
              totalsize = -1;
            }

            long remaining = totalsize - lowRange;
            long requested = highRange - lowRange;

            if (requested != 0) {
              // Determine the range (i.e. smaller of known or requested bytes)
              long bytes = remaining > -1 ? remaining : inputStream.available();

              if (requested > 0 && bytes > requested) {
                bytes = requested + 1;
              }

              // Calculate the corresponding highRange (this is usually redundant).
              highRange = lowRange + bytes - (bytes > 0 ? 1 : 0);

              LOGGER.trace(
                  (chunked ? "Using chunked response. " : "") + "Sending " + bytes + " bytes.");

              output.setHeader(
                  HttpHeaders.Names.CONTENT_RANGE,
                  "bytes "
                      + lowRange
                      + "-"
                      + (highRange > -1 ? highRange : "*")
                      + "/"
                      + (totalsize > -1 ? totalsize : "*"));

              // Content-Length refers to the current chunk size here, though in chunked
              // mode if the request is open-ended and totalsize is unknown we omit it.
              if (chunked && requested < 0 && totalsize < 0) {
                CLoverride = -1;
              } else {
                CLoverride = bytes;
              }
            } else {
              // Content-Length refers to the total remaining size of the stream here.
              CLoverride = remaining;
            }

            // Calculate the corresponding highRange (this is usually redundant).
            highRange = lowRange + CLoverride - (CLoverride > 0 ? 1 : 0);

            if (contentFeatures != null) {
              output.setHeader("ContentFeatures.DLNA.ORG", dlna.getDlnaContentFeatures());
            }

            output.setHeader(HttpHeaders.Names.ACCEPT_RANGES, "bytes");
            output.setHeader(HttpHeaders.Names.CONNECTION, "keep-alive");
          }
        }
      }
    } else if ((method.equals("GET") || method.equals("HEAD"))
        && (argument.toLowerCase().endsWith(".png")
            || argument.toLowerCase().endsWith(".jpg")
            || argument.toLowerCase().endsWith(".jpeg"))) {
      if (argument.toLowerCase().endsWith(".png")) {
        output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "image/png");
      } else {
        output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "image/jpeg");
      }
      output.setHeader(HttpHeaders.Names.ACCEPT_RANGES, "bytes");
      output.setHeader(HttpHeaders.Names.CONNECTION, "keep-alive");
      output.setHeader(HttpHeaders.Names.EXPIRES, getFUTUREDATE() + " GMT");
      inputStream = getResourceInputStream(argument);
    } else if ((method.equals("GET") || method.equals("HEAD"))
        && (argument.equals("description/fetch") || argument.endsWith("1.0.xml"))) {
      output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "text/xml; charset=\"utf-8\"");
      output.setHeader(HttpHeaders.Names.CACHE_CONTROL, "no-cache");
      output.setHeader(HttpHeaders.Names.EXPIRES, "0");
      output.setHeader(HttpHeaders.Names.ACCEPT_RANGES, "bytes");
      output.setHeader(HttpHeaders.Names.CONNECTION, "keep-alive");
      inputStream =
          getResourceInputStream((argument.equals("description/fetch") ? "PMS.xml" : argument));
      if (argument.equals("description/fetch")) {
        byte b[] = new byte[inputStream.available()];
        inputStream.read(b);
        String s = new String(b);
        s = s.replace("[uuid]", PMS.get().usn()); // .substring(0, PMS.get().usn().length()-2));
        String profileName = PMS.getConfiguration().getProfileName();
        if (PMS.get().getServer().getHost() != null) {
          s = s.replace("[host]", PMS.get().getServer().getHost());
          s = s.replace("[port]", "" + PMS.get().getServer().getPort());
        }
        if (xbox) {
          LOGGER.debug("DLNA changes for Xbox 360");
          s =
              s.replace(
                  "Universal Media Server",
                  "Universal Media Server [" + profileName + "] : Windows Media Connect");
          s =
              s.replace(
                  "<modelName>UMS</modelName>", "<modelName>Windows Media Connect</modelName>");
          s =
              s.replace(
                  "<serviceList>",
                  "<serviceList>"
                      + CRLF
                      + "<service>"
                      + CRLF
                      + "<serviceType>urn:microsoft.com:service:X_MS_MediaReceiverRegistrar:1</serviceType>"
                      + CRLF
                      + "<serviceId>urn:microsoft.com:serviceId:X_MS_MediaReceiverRegistrar</serviceId>"
                      + CRLF
                      + "<SCPDURL>/upnp/mrr/scpd</SCPDURL>"
                      + CRLF
                      + "<controlURL>/upnp/mrr/control</controlURL>"
                      + CRLF
                      + "</service>"
                      + CRLF);
        } else {
          s = s.replace("Universal Media Server", "Universal Media Server [" + profileName + "]");
        }

        if (!mediaRenderer.isPS3()) {
          // hacky stuff. replace the png icon by a jpeg one. Like mpeg2 remux,
          // really need a proper format compatibility list by renderer
          s = s.replace("<mimetype>image/png</mimetype>", "<mimetype>image/jpeg</mimetype>");
          s = s.replace("/images/thumbnail-256.png", "/images/thumbnail-120.jpg");
          s = s.replace(">256<", ">120<");
        }
        response.append(s);
        inputStream = null;
      }
    } else if (method.equals("POST")
        && (argument.contains("MS_MediaReceiverRegistrar_control")
            || argument.contains("mrr/control"))) {
      output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "text/xml; charset=\"utf-8\"");
      response.append(HTTPXMLHelper.XML_HEADER);
      response.append(CRLF);
      response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
      response.append(CRLF);
      if (soapaction != null && soapaction.contains("IsAuthorized")) {
        response.append(HTTPXMLHelper.XBOX_2);
        response.append(CRLF);
      } else if (soapaction != null && soapaction.contains("IsValidated")) {
        response.append(HTTPXMLHelper.XBOX_1);
        response.append(CRLF);
      }
      response.append(HTTPXMLHelper.BROWSERESPONSE_FOOTER);
      response.append(CRLF);
      response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
      response.append(CRLF);
    } else if (method.equals("POST") && argument.endsWith("upnp/control/connection_manager")) {
      output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "text/xml; charset=\"utf-8\"");
      if (soapaction.indexOf("ConnectionManager:1#GetProtocolInfo") > -1) {
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.PROTOCOLINFO_RESPONSE);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      }
    } else if (method.equals("POST") && argument.endsWith("upnp/control/content_directory")) {
      output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "text/xml; charset=\"utf-8\"");
      if (soapaction.indexOf("ContentDirectory:1#GetSystemUpdateID") > -1) {
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.GETSYSTEMUPDATEID_HEADER);
        response.append(CRLF);
        response.append("<Id>" + DLNAResource.getSystemUpdateId() + "</Id>");
        response.append(CRLF);
        response.append(HTTPXMLHelper.GETSYSTEMUPDATEID_FOOTER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      } else if (soapaction.indexOf("ContentDirectory:1#X_GetFeatureList")
          > -1) { // Added for Samsung 2012 TVs
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SAMSUNG_ERROR_RESPONSE);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      } else if (soapaction.indexOf("ContentDirectory:1#GetSortCapabilities") > -1) {
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SORTCAPS_RESPONSE);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      } else if (soapaction.indexOf("ContentDirectory:1#GetSearchCapabilities") > -1) {
        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SEARCHCAPS_RESPONSE);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
      } else if (soapaction.contains("ContentDirectory:1#Browse")
          || soapaction.contains("ContentDirectory:1#Search")) {
        objectID = getEnclosingValue(content, "<ObjectID>", "</ObjectID>");
        String containerID = null;
        if ((objectID == null || objectID.length() == 0) && xbox) {
          containerID = getEnclosingValue(content, "<ContainerID>", "</ContainerID>");
          if (!containerID.contains("$")) {
            objectID = "0";
          } else {
            objectID = containerID;
            containerID = null;
          }
        }
        Object sI = getEnclosingValue(content, "<StartingIndex>", "</StartingIndex>");
        Object rC = getEnclosingValue(content, "<RequestedCount>", "</RequestedCount>");
        browseFlag = getEnclosingValue(content, "<BrowseFlag>", "</BrowseFlag>");

        if (sI != null) {
          startingIndex = Integer.parseInt(sI.toString());
        }

        if (rC != null) {
          requestCount = Integer.parseInt(rC.toString());
        }

        response.append(HTTPXMLHelper.XML_HEADER);
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_HEADER);
        response.append(CRLF);

        if (soapaction.contains("ContentDirectory:1#Search")) {
          response.append(HTTPXMLHelper.SEARCHRESPONSE_HEADER);
        } else {
          response.append(HTTPXMLHelper.BROWSERESPONSE_HEADER);
        }

        response.append(CRLF);
        response.append(HTTPXMLHelper.RESULT_HEADER);
        response.append(HTTPXMLHelper.DIDL_HEADER);

        if (soapaction.contains("ContentDirectory:1#Search")) {
          browseFlag = "BrowseDirectChildren";
        }

        // XBOX virtual containers ... d'oh!
        String searchCriteria = null;
        if (xbox
            && PMS.getConfiguration().getUseCache()
            && PMS.get().getLibrary() != null
            && containerID != null) {
          if (containerID.equals("7") && PMS.get().getLibrary().getAlbumFolder() != null) {
            objectID = PMS.get().getLibrary().getAlbumFolder().getResourceId();
          } else if (containerID.equals("6") && PMS.get().getLibrary().getArtistFolder() != null) {
            objectID = PMS.get().getLibrary().getArtistFolder().getResourceId();
          } else if (containerID.equals("5") && PMS.get().getLibrary().getGenreFolder() != null) {
            objectID = PMS.get().getLibrary().getGenreFolder().getResourceId();
          } else if (containerID.equals("F")
              && PMS.get().getLibrary().getPlaylistFolder() != null) {
            objectID = PMS.get().getLibrary().getPlaylistFolder().getResourceId();
          } else if (containerID.equals("4") && PMS.get().getLibrary().getAllFolder() != null) {
            objectID = PMS.get().getLibrary().getAllFolder().getResourceId();
          } else if (containerID.equals("1")) {
            String artist = getEnclosingValue(content, "upnp:artist = &quot;", "&quot;)");
            if (artist != null) {
              objectID = PMS.get().getLibrary().getArtistFolder().getResourceId();
              searchCriteria = artist;
            }
          }
        }

        List<DLNAResource> files =
            PMS.get()
                .getRootFolder(mediaRenderer)
                .getDLNAResources(
                    objectID,
                    browseFlag != null && browseFlag.equals("BrowseDirectChildren"),
                    startingIndex,
                    requestCount,
                    mediaRenderer);
        if (searchCriteria != null && files != null) {
          for (int i = files.size() - 1; i >= 0; i--) {
            if (!files.get(i).getName().equals(searchCriteria)) {
              files.remove(i);
            }
          }
          if (files.size() > 0) {
            files = files.get(0).getChildren();
          }
        }

        int minus = 0;
        if (files != null) {
          for (DLNAResource uf : files) {
            if (xbox && containerID != null) {
              uf.setFakeParentId(containerID);
            }
            if (uf.isCompatible(mediaRenderer)
                && (uf.getPlayer() == null || uf.getPlayer().isPlayerCompatible(mediaRenderer))) {
              response.append(uf.toString(mediaRenderer));
            } else {
              minus++;
            }
          }
        }

        response.append(HTTPXMLHelper.DIDL_FOOTER);
        response.append(HTTPXMLHelper.RESULT_FOOTER);
        response.append(CRLF);
        int filessize = 0;
        if (files != null) {
          filessize = files.size();
        }
        response.append("<NumberReturned>").append(filessize - minus).append("</NumberReturned>");
        response.append(CRLF);
        DLNAResource parentFolder = null;
        if (files != null && filessize > 0) {
          parentFolder = files.get(0).getParent();
        }
        if (browseFlag != null
            && browseFlag.equals("BrowseDirectChildren")
            && mediaRenderer.isMediaParserV2()
            && mediaRenderer.isDLNATreeHack()) {
          // with the new parser, files are parsed and analyzed *before* creating the DLNA tree,
          // every 10 items (the ps3 asks 10 by 10),
          // so we do not know exactly the total number of items in the DLNA folder to send
          // (regular files, plus the #transcode folder, maybe the #imdb one, also files can be
          // invalidated and hidden if format is broken or encrypted, etc.).
          // let's send a fake total size to force the renderer to ask following items
          int totalCount = startingIndex + requestCount + 1; // returns 11 when 10 asked
          if (filessize - minus <= 0) // if no more elements, send the startingIndex
          {
            totalCount = startingIndex;
          }
          response.append("<TotalMatches>").append(totalCount).append("</TotalMatches>");
        } else if (browseFlag != null && browseFlag.equals("BrowseDirectChildren")) {
          response
              .append("<TotalMatches>")
              .append(((parentFolder != null) ? parentFolder.childrenNumber() : filessize) - minus)
              .append("</TotalMatches>");
        } else { // from upnp spec: If BrowseMetadata is specified in the BrowseFlags then
          // TotalMatches = 1
          response.append("<TotalMatches>1</TotalMatches>");
        }
        response.append(CRLF);
        response.append("<UpdateID>");
        if (parentFolder != null) {
          response.append(parentFolder.getUpdateId());
        } else {
          response.append("1");
        }
        response.append("</UpdateID>");
        response.append(CRLF);
        if (soapaction.contains("ContentDirectory:1#Search")) {
          response.append(HTTPXMLHelper.SEARCHRESPONSE_FOOTER);
        } else {
          response.append(HTTPXMLHelper.BROWSERESPONSE_FOOTER);
        }
        response.append(CRLF);
        response.append(HTTPXMLHelper.SOAP_ENCODING_FOOTER);
        response.append(CRLF);
        // LOGGER.trace(response.toString());
      }
    } else if (method.equals("SUBSCRIBE")) {
      output.setHeader("SID", PMS.get().usn());
      output.setHeader("TIMEOUT", "Second-1800");
      String cb = soapaction.replace("<", "").replace(">", "");
      String faddr = cb.replace("http://", "").replace("/", "");
      String addr = faddr.split(":")[0];
      int port = Integer.parseInt(faddr.split(":")[1]);
      Socket sock = new Socket(addr, port);
      OutputStream out = sock.getOutputStream();
      out.write(("NOTIFY /" + argument + " HTTP/1.1").getBytes());
      out.write(CRLF.getBytes());
      out.write(("SID: " + PMS.get().usn()).getBytes());
      out.write(CRLF.getBytes());
      out.write(("SEQ: " + 0).getBytes());
      out.write(CRLF.getBytes());
      out.write(("NT: upnp:event").getBytes());
      out.write(CRLF.getBytes());
      out.write(("NTS: upnp:propchange").getBytes());
      out.write(CRLF.getBytes());
      out.write(("HOST: " + faddr).getBytes());
      out.write(CRLF.getBytes());
      out.flush();
      out.close();
      if (argument.contains("connection_manager")) {
        response.append(
            HTTPXMLHelper.eventHeader("urn:schemas-upnp-org:service:ConnectionManager:1"));
        response.append(HTTPXMLHelper.eventProp("SinkProtocolInfo"));
        response.append(HTTPXMLHelper.eventProp("SourceProtocolInfo"));
        response.append(HTTPXMLHelper.eventProp("CurrentConnectionIDs"));
        response.append(HTTPXMLHelper.EVENT_FOOTER);
      } else if (argument.contains("content_directory")) {
        response.append(
            HTTPXMLHelper.eventHeader("urn:schemas-upnp-org:service:ContentDirectory:1"));
        response.append(HTTPXMLHelper.eventProp("TransferIDs"));
        response.append(HTTPXMLHelper.eventProp("ContainerUpdateIDs"));
        response.append(
            HTTPXMLHelper.eventProp("SystemUpdateID", "" + DLNAResource.getSystemUpdateId()));
        response.append(HTTPXMLHelper.EVENT_FOOTER);
      }
    } else if (method.equals("NOTIFY")) {
      output.setHeader(HttpHeaders.Names.CONTENT_TYPE, "text/xml");
      output.setHeader("NT", "upnp:event");
      output.setHeader("NTS", "upnp:propchange");
      output.setHeader("SID", PMS.get().usn());
      output.setHeader("SEQ", "0");
      response.append("<e:propertyset xmlns:e=\"urn:schemas-upnp-org:event-1-0\">");
      response.append("<e:property>");
      response.append("<TransferIDs></TransferIDs>");
      response.append("</e:property>");
      response.append("<e:property>");
      response.append("<ContainerUpdateIDs></ContainerUpdateIDs>");
      response.append("</e:property>");
      response.append("<e:property>");
      response
          .append("<SystemUpdateID>")
          .append(DLNAResource.getSystemUpdateId())
          .append("</SystemUpdateID>");
      response.append("</e:property>");
      response.append("</e:propertyset>");
    }

    output.setHeader("Server", PMS.get().getServerName());

    if (response.length() > 0) {
      // A response message was constructed; convert it to data ready to be sent.
      byte responseData[] = response.toString().getBytes("UTF-8");
      output.setHeader(HttpHeaders.Names.CONTENT_LENGTH, "" + responseData.length);

      // HEAD requests only require headers to be set, no need to set contents.
      if (!method.equals("HEAD")) {
        // Not a HEAD request, so set the contents of the response.
        ChannelBuffer buf = ChannelBuffers.copiedBuffer(responseData);
        output.setContent(buf);
      }

      // Send the response to the client.
      future = e.getChannel().write(output);

      if (close) {
        // Close the channel after the response is sent.
        future.addListener(ChannelFutureListener.CLOSE);
      }
    } else if (inputStream != null) {
      // There is an input stream to send as a response.

      if (CLoverride > -2) {
        // Content-Length override has been set, send or omit as appropriate
        if (CLoverride > -1 && CLoverride != DLNAMediaInfo.TRANS_SIZE) {
          // Since PS3 firmware 2.50, it is wiser not to send an arbitrary Content-Length,
          // as the PS3 will display a network error and request the last seconds of the
          // transcoded video. Better to send no Content-Length at all.
          output.setHeader(HttpHeaders.Names.CONTENT_LENGTH, "" + CLoverride);
        }
      } else {
        int cl = inputStream.available();
        LOGGER.trace("Available Content-Length: " + cl);
        output.setHeader(HttpHeaders.Names.CONTENT_LENGTH, "" + cl);
      }

      if (range.isStartOffsetAvailable() && dlna != null) {
        // Add timeseek information headers.
        String timeseekValue = DLNAMediaInfo.getDurationString(range.getStartOrZero());
        String timetotalValue = dlna.getMedia().getDurationString();
        String timeEndValue =
            range.isEndLimitAvailable()
                ? DLNAMediaInfo.getDurationString(range.getEnd())
                : timetotalValue;
        output.setHeader(
            "TimeSeekRange.dlna.org",
            "npt=" + timeseekValue + "-" + timeEndValue + "/" + timetotalValue);
        output.setHeader(
            "X-Seek-Range", "npt=" + timeseekValue + "-" + timeEndValue + "/" + timetotalValue);
      }

      // Send the response headers to the client.
      future = e.getChannel().write(output);

      if (lowRange != DLNAMediaInfo.ENDFILE_POS && !method.equals("HEAD")) {
        // Send the response body to the client in chunks.
        ChannelFuture chunkWriteFuture =
            e.getChannel().write(new ChunkedStream(inputStream, BUFFER_SIZE));

        // Add a listener to clean up after sending the entire response body.
        chunkWriteFuture.addListener(
            new ChannelFutureListener() {
              @Override
              public void operationComplete(ChannelFuture future) {
                try {
                  PMS.get().getRegistry().reenableGoToSleep();
                  inputStream.close();
                } catch (IOException e) {
                  LOGGER.debug("Caught exception", e);
                }

                // Always close the channel after the response is sent because of
                // a freeze at the end of video when the channel is not closed.
                future.getChannel().close();
                startStopListenerDelegate.stop();
              }
            });
      } else {
        // HEAD method is being used, so simply clean up after the response was sent.
        try {
          PMS.get().getRegistry().reenableGoToSleep();
          inputStream.close();
        } catch (IOException ioe) {
          LOGGER.debug("Caught exception", ioe);
        }

        if (close) {
          // Close the channel after the response is sent
          future.addListener(ChannelFutureListener.CLOSE);
        }

        startStopListenerDelegate.stop();
      }
    } else {
      // No response data and no input stream. Seems we are merely serving up headers.
      if (lowRange > 0 && highRange > 0) {
        // FIXME: There is no content, so why set a length?
        output.setHeader(HttpHeaders.Names.CONTENT_LENGTH, "" + (highRange - lowRange + 1));
      } else {
        output.setHeader(HttpHeaders.Names.CONTENT_LENGTH, "0");
      }

      // Send the response headers to the client.
      future = e.getChannel().write(output);

      if (close) {
        // Close the channel after the response is sent.
        future.addListener(ChannelFutureListener.CLOSE);
      }
    }

    // Log trace information
    Iterator<String> it = output.getHeaderNames().iterator();

    while (it.hasNext()) {
      String headerName = it.next();
      LOGGER.trace("Sent to socket: " + headerName + ": " + output.getHeader(headerName));
    }

    return future;
  }