Cloudflare Developers•3w ago

Abort signal is not triggered

When I use this code, it doesn't trigger when user disconnects from the worker. But it shows an error X [ERROR] Uncaught (in promise) Error: Network connection lost. in the console somehow.

request.signal.addEventListener('abort', () => {
   console.log(123)
});

request.signal.addEventListener('abort', () => {
   console.log(123)
});

What's the problem?

6 Replies

AgentCord•3w ago

Is there any other way to detect if user disconnects?

James•3w ago

AFAIK, this isn't really possible with Workers, unless you're doing WebSockets or something similar.

AgentCord•3w ago

Oh...... Okay

Hello, I’m Allie!•3w ago

I'm wondering, if you race a Promise that resolves in a certain amount of time against a Promise that resolves when aborted, then pass it into a waitUntil, it might work?

AgentCord•3w ago

Already using waitUntil() to check the state after some delay and the abort callback doesn't get called anyway

hfcRed•3w ago

From my own experience workers will continue running until they finish the request, even when the client aborts Not sure if this is true, but thats the behavior I'm getting

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Abort signal is not triggered