you can only use scheduled stuff/io when handling a request iirc

theres some error it throws

wrangler tail might be able to show it?

is there anyway to make a DO tick then as long as 1 websocket is connected?

i thought via setInterval or setTimeout and waitUntil it was possible

waitUntil

inside a DO is meaningless. Anything you do inside a DO will keep running until the object itself shuts down, which is typically after 30 seconds of being idle (no new requests).

^

hum well i tried setTimeout(this.my_func, 1000) and setInterval(this.my_func, 1000) both dont call anything, DO keeps running

tried making my_func async and nonasync

I presume it stays active while a websocket is connected to it? Or does it also require messages through that websocket every n seconds?

This might be a JavaScript issue.

setTimeout(this.my_func, 1000)

won't work --

my_func

will be called without a

this

, and probably throws an exception. You need to do

setTimeout(this.my_func.bind(this), 1000)

or

setTimeout(() => this.my_func(), 1000)

.

Yes. "idle" really means "no request currently running", so shutdown is 30+ seconds after the last request finishes. An open WebSocket is an active request.

I assume the billing for DOs with a WebSocket active counts every second the socket is open, and not just every second it spends handling the messages?

Would be awesome if it was the second one, but obviously keeping the DO in memory costs money

https://discord.com/channels/595317990191398933/773219443911819284/831990845523623977 We’re still thinking about it

🌩️ perfect it works!

is there a recommended workflow to catch errors goin on in the DO?

something like datadog logger

guessing cloudflare can keep a log of these?

wrangler tail

should report uncaught exceptions but I'm not sure if it works yet for DO...

how do you properly close a websocket on side of DO? i called websocket.close() on it, but it seems still open on the clientside

ah I see, I think inside the DO, if you call close with no exit reason, it does not close the conn. Just confirmed this

// nothing happens, client is connected
session.websocket.close();

// client gets disconnected
session.websocket.close(1000, "no pong");

.close()

will throw an exception if you don't pass in a valid code. I guess the exception isn't getting caught. Sorry that errors are hard to see right now. FWIW I highly recommend wrapping all code in a try/catch of some sort and reporting the error somewhere.

yea i have a global wrap but in this case, the close got called from a setTimeout

the docs also say both args to .close() are optional

it should perhaps be edited to include the first arg to .close is manditory

(these are the docs for the websocket pair on the cloudflare side, not the clientside javascript)

export class User {
  constructor(controller, env) {
    this.account = this.constructor.name;

this does not seem to return the name of the DO for me, it just returns "S"

this.storage.put

does not seem to work if called from a setTimeout, could that be?