Madyan Posts - Answer Overflow

Madyan

Explore posts from servers

•Created by Madyan on 7/8/2024 in #workers-help

How to abort realtime connection when request ends?

I'm building a realtime chat app, and evaluating Ably to use as a Pub/Sub solution in my worker (I have a GraphQL subscription that subscribes to incoming pubsub messages from Ably, does some processing to the payload, then passes it to my React frontend). I noticed that (at least when testing locally) every request would start a new Ably connection, and it wouldn't disconnect. Hence I hit my peak Ably connection limit whilst I was developing. Can you help me resolve this please? I'm using GraphQL Yoga server, but here is a simpler example to reproduce the issue. Note I attempted to add code to detect the "abort" signal, but it's never getting triggered.

import * as Ably from "ably"

const worker: ExportedHandler<Record<string, unknown>> = {
  fetch: async (request, env) => {
    const signal = request.signal as AbortSignal
    signal.addEventListener("abort", () => {
      console.log("Request aborted via event listener")
    })
    signal.onabort = () => {
      console.log("Request aborted")
    }

    const ably = new Ably.Realtime({
      key: env.ABLY_API_KEY as string,
    })

    await ably.connection.once("connected")

    return Response.json({ message: "Hello, world!" })
  },
}

export default worker

import * as Ably from "ably"

const worker: ExportedHandler<Record<string, unknown>> = {
  fetch: async (request, env) => {
    const signal = request.signal as AbortSignal
    signal.addEventListener("abort", () => {
      console.log("Request aborted via event listener")
    })
    signal.onabort = () => {
      console.log("Request aborted")
    }

    const ably = new Ably.Realtime({
      key: env.ABLY_API_KEY as string,
    })

    await ably.connection.once("connected")

    return Response.json({ message: "Hello, world!" })
  },
}

export default worker

Thanks! 🙂

1 replies

CDCloudflare Developers

•Created by Madyan on 3/11/2024 in #workers-help

Can you invoke a worker by cli?

I want to create a script to seed my DB (it's D1, hence I can't use a Node.js script). Is there an easy way to invoke a worker (both locally / remote environments)? Or do I need to run the server, await for it to load, and then curl it? More context: https://discord.com/channels/595317990191398933/992060581832032316/1216702702856179752

1 replies

CDCloudflare Developers

•Created by Madyan on 8/3/2023 in #general-help

522 error when trying to redirect Apex to www domain

9 replies

Gaming

Programming