Websockets Drawing Example

[Waidhoferj]

Added simple collaborative drawing example to a new examples folder.

[davidbrochart]

Don't you want to use https://github.com/y-crdt/ypy-websocket for that?

[Waidhoferj]

@davidbrochart that was my original idea, but I ran into an error that I couldn't debug. We could figure out the issue and replace the websocket logic.

The error involved a buffer read that expected 2 bytes and received 0.

[davidbrochart]

The error involved a buffer read that expected 2 bytes and received 0.

Difficult to see where it could come from, but if you still have the code it would be interesting to open an issue with it.

[Waidhoferj]

Sounds good, I'll create a minimal example and post an issue to the ypy-websocket repository.

[Waidhoferj]

@Horusiath I noticed that the observe_after_transaction is running in a tight loop with an empty update message when nothing has changed. Is this happening due read-only transaction operations in the draw() loop that don't change the state?