# Collaboration Server Updated **URL:** \ **Category:** HOOPS Visualize Web\ **Tags:** code, webviewer\ **Created:** [January 29, 2023, 1:10pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514 "2023-01-29T13:10:18Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![guido](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/guido/32/115_2.png) [@guido](https://forum.techsoft3d.com/u/guido)\ **Post date:** [January 29, 2023, 1:10pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/1 "2023-01-29T13:10:18Z")
![camcollab](https://us1.discourse-cdn.com/flex020/uploads/techsoft3d/original/1X/9e9b8958eed2eda3dbaf199a4a360790d804ce25.gif) A few months ago, we have released a [node library](https://forum.techsoft3d.com/t/add-collaboration-to-any-hoops-communicator-based-application/1085) to easily add real-time collaboration to any HOOPS Communicator based application. Since then quite a few new features have been added to the Collaboration server: - A new plugin architecture that makes it easier to extend the functionality of the library - Support for Persistent Room Data - More robust support for geometry creation - Ability to disable syncing for cameras and selection - Two plugins for displaying user-avatars (see above GIF) and support for the new [textbox class](https://forum.techsoft3d.com/t/new-textbox-markup-released/1276). You can download the library and learn more here: > **[GitHub - techsoft3d/ts3d-hc-collabServer](https://github.com/techsoft3d/ts3d-hc-collabServer)** > > Contribute to techsoft3d/ts3d-hc-collabServer development by creating an account on GitHub. ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [December 30, 2024, 9:15am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/2 "2024-12-30T09:15:50Z")
I am unable to open the demo url in the readme file. Is there a video or other way to view it live demo of the this library? After I run it, the following interface appears. How can I operate it to achieve collaboration? ![image](https://us1.discourse-cdn.com/flex020/uploads/techsoft3d/original/2X/9/9184d1f648da1aeedacdc89a7a68821c268996f9.png) ---
**Author:** ![tino](https://avatars.discourse-cdn.com/v4/letter/t/9dc877/32.png) [@tino](https://forum.techsoft3d.com/u/tino)\ **Post date:** [December 30, 2024, 12:08pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/3 "2024-12-30T12:08:24Z")
Hello @619944680, The collaborator demo is effectively a screen mirroring application so you will need two screens (or two browser tabs) viewing the same model. You can also check out the [Collaborator Demo](https://labs.techsoft3d.com/project/collaborator-demo) as part of our cloud demo suite. Thanks, Tino ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [December 30, 2024, 2:02pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/4 "2024-12-30T14:02:19Z")
Hello,Tino. I want to download the code package from the GitHub connection in [Collaborator Demo](https://labs.techsoft3d.com/project/collaborator-demo/), but GitHub has been unable to open it. Excuse me, is the link invalid? It is also possible that I am unable to access foreign websites. If the link has not expired, please let me know. Thanks. ---
**Author:** ![tino](https://avatars.discourse-cdn.com/v4/letter/t/9dc877/32.png) [@tino](https://forum.techsoft3d.com/u/tino)\ **Post date:** [December 30, 2024, 2:40pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/5 "2024-12-30T14:40:14Z")
Are you getting an error when you click on _Download ZIP_ in the GitHub repo: > **[GitHub - techsoft3d/Collaborator](https://github.com/techsoft3d/Collaborator)** > > Contribute to techsoft3d/Collaborator development by creating an account on GitHub. ![image](https://us1.discourse-cdn.com/flex020/uploads/techsoft3d/original/2X/2/2e49edd2ccc5260bbd91cdd66c1c47af5dca8559.png) ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [December 31, 2024, 12:57am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/6 "2024-12-31T00:57:15Z")
Yes, it may be that my network here cannot access GitHub. I asked my colleague to help me download it. ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [December 31, 2024, 7:28am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/7 "2024-12-31T07:28:44Z")
Hi,Tino, I followed the steps in the compressed readme file and finally executed ‘npm’. The error is as follows: ![0abcf91fc244bf553a455e13cbc9c86](https://us1.discourse-cdn.com/flex020/uploads/techsoft3d/original/2X/5/5d9eb4ded11068158d31d20cefe8bbbb06fc041e.png) I will follow the prompts to install Express again,but it still reports an error, The error message after installing Express is as follows: ![921162a67723e92d32824b60f1234e5](https://us1.discourse-cdn.com/flex020/uploads/techsoft3d/original/2X/d/ddecb696610190747d628ae33ae5c98af5a698f1.png) Is there anything else I need to configure to run this code package? Thanks. ---
**Author:** ![tino](https://avatars.discourse-cdn.com/v4/letter/t/9dc877/32.png) [@tino](https://forum.techsoft3d.com/u/tino)\ **Post date:** [December 31, 2024, 12:33pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/8 "2024-12-31T12:33:37Z")
The version _techsoft3d/Collaborator_ is an older version and has largely been superseded by _techsoft3d/ts3d-hc-collabServer_. Besides the core mirroring feature, the latter version includes camera synchronization and basic chat functionality — in addition to a more robust and familiar model browser. It looks like based on your screenshot, you were able to get _ts3d-hc-collabServer_ up and running. Is this not the case? ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [January 2, 2025, 1:00am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/9 "2025-01-02T01:00:53Z")
> [@tino](#): > > ts3d-hc-collabServer At first, I was running ts3d hc collabServer. Later, when I saw the GitHub link in [Collaborator Demo](https://labs.techsoft3d.com/project/collaborator-demo/), I thought techsoft3d/Collaborator was the latest.Then I can run normally. Thanks. ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [January 3, 2025, 2:45am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/10 "2025-01-03T02:45:42Z")
Hello, Tino. I want to set a user as the owner of a room, and the room owner can set which users to collaborate with. Can it be achieved? Thanks. ---
**Author:** ![tino](https://avatars.discourse-cdn.com/v4/letter/t/9dc877/32.png) [@tino](https://forum.techsoft3d.com/u/tino)\ **Post date:** [January 3, 2025, 12:00pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/11 "2025-01-03T12:00:10Z")
Yes, this should be possible. The collaboration demo is using a 3rd party application called [Socket.IO](https://socket.io/) for the communicaton features of the room. You will have to do the necessary research to implement the desired functionalities. ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [January 11, 2025, 3:03am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/12 "2025-01-11T03:03:44Z")
I am trying to use the collaboration library and SocketIo has successfully connected, and the following code has been added, `hcCollab.initialize(hwv, null, 'http://192.270.1.25:5655/') hcCollab.registerMessageReceivedCallback(hcCollabMessageReceived) hcCollab.connect('default', 'User' + Math.floor(Math.random() * 9999))` there are no errors reported, But the two scenes are not synchronized. What could be the possible reason？ ---
**Author:** ![tino](https://avatars.discourse-cdn.com/v4/letter/t/9dc877/32.png) [@tino](https://forum.techsoft3d.com/u/tino)\ **Post date:** [January 11, 2025, 2:56pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/13 "2025-01-11T14:56:08Z")
@619944680, When viewing the model, are you able to see the users: ![image](https://us1.discourse-cdn.com/flex020/uploads/techsoft3d/original/2X/e/e2c6fc2a12bd209061495d3ebd71ec31c2fec811.png) If not, the URL may not be correct. On that note, the octet `270` seems to be out of range as I believe in an IPv4 address, the values are range-bound to 0 to 255. Thanks, Tino ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [January 13, 2025, 12:59am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/14 "2025-01-13T00:59:52Z")
Yes,I can see the users,users can also send messages to each other. It’s just that the model scene cannot be mirrored. ---
**Author:** ![tino](https://avatars.discourse-cdn.com/v4/letter/t/9dc877/32.png) [@tino](https://forum.techsoft3d.com/u/tino)\ **Post date:** [January 13, 2025, 1:11am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/15 "2025-01-13T01:11:43Z")
If there have been no other changes to the code, I would expect mirroring to work given that different users are being displayed in the viewer. One follow-up question is regarding the IPv4 address you provided ([http://192.270.1.25:5655](http://192.270.1.25:5655)). Is this correct? The octet `270` is beyond the range of 0 to 255. ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [January 13, 2025, 3:10am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/16 "2025-01-13T03:10:30Z")
> [@tino](#): > > IPv4 address The IPv4 address was randomly written by me in the post, and in my code, it is the address where I run the SoketIo service.This demo is actually running locally on my computer. I recorded a short video in the compressed file, and in the video, I can see the users. Users can send and receive messages, but the model scene cannot be mirrored, and the browser console does not report any errors. May I ask which part of the code the mirroring depends on for execution? I would like to check if I have made any changes to the code that executes the mirroring . [20250113\_110707.zip](https://forum.techsoft3d.com/uploads/short-url/AnRFD9xnmdMeGbwVwVZJ8YxR817.zip) (566.3 KB) ---
**Author:** ![tino](https://avatars.discourse-cdn.com/v4/letter/t/9dc877/32.png) [@tino](https://forum.techsoft3d.com/u/tino)\ **Post date:** [January 13, 2025, 3:26am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/17 "2025-01-13T03:26:47Z")
Please see the function `handleMessage(message)` in hcCollab.js. Also, please review the notes/README section of the [GitHub post](https://github.com/techsoft3d/ts3d-hc-collabServer) for additional context that may be relevant to your application. ---
**Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [January 14, 2025, 9:17am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/18 "2025-01-14T09:17:34Z")
> [@tino](#): > > handleMessage I found that the if judgment in the function `handleMessage(message)` method keeps returning. ![1736845789308](https://us1.discourse-cdn.com/flex020/uploads/techsoft3d/original/2X/b/b64b0a3a135f1e19b7641b9d542f9c0138c641cf.png) Causing the code of the subsequent to fail to execute.Here is the code I used to establish a connection with the collaboration server. ![1736846023749](https://us1.discourse-cdn.com/flex020/uploads/techsoft3d/original/2X/f/fa3827e499503c7bd7fab37744abaa5e6c5745c3.png) Is the function `hcCollabmessageReceived` written incorrectly? ---
**Author:** ![tino](https://avatars.discourse-cdn.com/v4/letter/t/9dc877/32.png) [@tino](https://forum.techsoft3d.com/u/tino)\ **Post date:** [January 14, 2025, 1:08pm UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/19 "2025-01-14T13:08:11Z")
Given that you’ve identified that the `if` statement is returning early, perhaps take a look at this function for clues: ```auto async function processCallbacks(message,send =false) { for (let i=0; i **Author:** ![619944680](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/619944680/32/516_2.png) [@619944680](https://forum.techsoft3d.com/u/619944680)\ **Post date:** [January 15, 2025, 5:58am UTC](https://forum.techsoft3d.com/t/collaboration-server-updated/1514/20 "2025-01-15T05:58:45Z") Okay, maybe I overlooked some code during the process of customizing the hcCollab project. I will try as you suggested. Thanks,Tino. 😉