This is an example of a Peer 2 Peer multi-user-chat program using WebRTC and WITHOUT using a signaling server.
You can try this by yourself by opening up multiple tabs of this same page.
Here is your invite text. Copy paste it to your friend:
Now paste in the text they send back to you:
Paste in the invite text your friend sent you:
Now send this back to your friend:
Connecting.
Please Wait...