How does multiplexing in Django sockets work?
This is definitely possible. They will be lots of possibilities, but I would recommend the following.

Have a page with code on. The page has some websocket JS code that can connect to a Channels Consumer.
The JS does 2 simple things. When code is updated code on the screen, send a message to the Consumer, with the new text (you can optimize this later). When the socket receives a message, then replace the code on screen with the new code.
In your consumer, add your consumer to a channel group when connecting (the group will contain all of the consumers that are accessing the page)
When a message is received, use group_send to send it to all the other consumers
When your consumer callback function gets called, then send a message to your websocket
I am new at this part of web developing and was trying to figure out a way of creating a web app with the basic specifications as the example bellow:

A user1 opens a page with a textbox (something where he can add text or so), and it will be modified as it decides to do it.

If the user1 has problems he can invite other user2 to help with the typing.


The user2 (when logged to the Channel/Socket) will be able to modify that field and the modifications made will be show to the user1 in real time and vice versa.


Or another example is a room on CodeAcademy:

Imagine that I am learning a new coding language, however, at middle of it I jeopardize it and had to ask for help.

So I go forward and ask help to another user. This user access the page through a WebSocket (or something related to that).


The user helps me changing my code and adding some comments at it in real time, and I also will be able to ask questions through it (real time communication)


My questions is: will I be able to developed certain app using Django Channels 2 and multiplexing? or better move to use NodeJS or something related to that?
Obs: I do have more experience working with python/django, so it will more productive for me right know if could find a way working with this combo.