Free Online Conference and Collaboration Tool with build in WebRTC MCU/SFU running in NodeJS

• Online Conferences with up to 6 participants per room (all Audio / Video)
• Online Conferences with up to 250 participants per room (all Audio / only Moderator video)
• Screenshare
• PDF and HTML5 Presentations
• Collaborative Whiteboard (can also be hosted standalone)
• Youtube viewer
• 3D Object viewer
• User interactions with draggable items (like Textboxes, Drawings...)
• Fileshare
• Text Chat
• Etherpad in IFrame (Must be hosted on its own)
• much more...

1. install nodeJs
2. run: npm install
3. run: node server.js
4. surf to: https://127.0.0.1:8080

Note:

• To serve it online you need a reverse proxy and deliver with https (look at "Behind a reverse Proxy" below)
• On some linux systems you need to install some extra deps to run puppeteer: here.

1. build . -t acc
2. run: docker run -d --net=host acc
3. surf to https://yourIp:8080

Note:

• To serve it online you need a reverse proxy and deliver with https (look at "Behind a reverse Proxy" below)
• To have all persistent datas (config, rooms, presentations...) outside of docker, you can run it like this:

docker run -d --name acc --net=host -v /home/acc/config:/app/config -v /home/acc/db:/app/db  -v /home/acc/3dObjs:/app/public/3dObjs -v /home/acc/praesis:/app/public/praesis -v /home/acc/profilePics:/app/public/profilePics -v /home/acc/singlefiles:/app/public/singlefiles acc

On the first start a new folder "/config" will be generated. Take a look at "/config/config.json" for all parameters. Change them if you like, and restart the server. If you don't see a config.json inside the /config folder set permitions of to mount:chmod -R 777 /home/acc and restart the container: docker restart acc.

More to come...

• Better error feedback
• More, better docs
• SIP Integration
• Recording of Audio/Video (Prototype working)
• Convert WebRTC Streams to RTMP so we can stream to youtube/twitch live (Prototype working)

• Audio/Video is not Peer2Peer so it will use some server CPU
• Max users per loadbalancer is about 256.
• Video is disabled in rooms with more than 6 People due to hight load (Only enabled for moderator).
• Firefox sometimes has some issues with the WebRTC audio/video, use chrome to be save
• If you are running without docker, conversion to PDF presentaions (From Powerpoint and other Docs) will not work without installing "unoconv" on your own
• Setup a TURN Server if your clients are behind Firewalls and NATs (See configuration/setup below)
• Self made Audio MCU with AudioApi on Chromium-Stack
• Videostreams are shared SFU Style

To setup a loadbalancer just start a second Accelerator server on a different server and change this parameters in your /config/config.json

• "loadBalancerAuthKey": "key", //Change to the same loadBalancerAuthKey as the key on the master server
• "isMaster": false,
• "masterURL": "https://myAcceleratorDomain.tl", //Change this to the URL of your main server
• "enableLocalMCU": true

Loadbalancing scheduling atm:

• All users in the same room using the same loadbalancer (Rooms are not balanced over different servers)
• First stream of room decides which loadbalancer is used for this room (loadbalancer with the least amount of streams at this moment)

1. Setup your TURN Container on an extra Server: HowTo
2. Make a new "iceServers" entry in "/config/config.json"

{
	"urls": "turn:IP_TO_TURN:443",
	"turnServerCredential": "authSecret",
	"username": "webrtcuser"
}

• "username" can be anything you like.
• "turnServerCredential" must be the "authSecret" form the TURN Server installation.

Restart the server.

location /accelerator/ {
	resolver 127.0.0.1 valid=30s;
	proxy_set_header HOST $host;
	proxy_http_version 1.1;
	proxy_set_header Upgrade $http_upgrade;
	proxy_set_header Connection upgrade;
	proxy_pass https://127.0.0.1:8080/;
}

<VirtualHost example.org:443>
...
# Proxy /accelerator/ to accelerator container
ProxyPass "/accelerator/" "https://127.0.0.1:8080/"
ProxyPassReverse "/accelerator/" "https://127.0.0.1:8080/"
...
</VirtualHost>

• University: Reutlingen University
• Faculty: Informatik
• Course of study: Human-Centered Computing (Master)
• Lecture: "Kollaborative Systeme" (Collaborative Environments)

• Raphael Fritsch ([email protected]) | Backend / WebRTC (and generally further development)
• Simone Liegl ([email protected]) | Frontend / Design / UX
• Sebastian Hirth | Frontend / Backend / Logo

• Gabriela Tullius ([email protected]) | swuxLab
• Peter Hertkorn ([email protected]) | swuxLab

license: GPLv3.0