Wasp•6d ago

i have websocket and i want to be able to call websocket in my server action

want to trigger websocket in action server or api in my application

4 Replies

Hi @victor. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Based on the knowledge sources provided, I can answer your question about using WebSockets in server actions or APIs in a Wasp application. Currently, Wasp does not provide a built-in way to directly access the WebSocket server instance (io) outside of the webSocketFn function. However, there is a workaround that you can use to achieve this functionality: 1. In the file where you define your webSocketFn, create a global variable to store the io instance. 2. Set this variable to the io instance inside the webSocketFn. 3. Export this variable so you can import and use it elsewhere in your server-side code. Here's an example of how you can implement this workaround:

// In your webSocket.js file
let ioInstance;

export const webSocketFn = (io, context) => {
  ioInstance = io;
  // Your regular WebSocket setup code here
}

export { ioInstance };

// In your webSocket.js file
let ioInstance;

export const webSocketFn = (io, context) => {
  ioInstance = io;
  // Your regular WebSocket setup code here
}

export { ioInstance };

Then, in your server actions or APIs, you can import and use the ioInstance:

import { ioInstance } from './webSocket.js';

export const myServerAction = async (args, context) => {
  // Your action logic here
  
  // Emit a WebSocket event
  if (ioInstance) {
    ioInstance.emit('someEvent', { data: 'Some data' });
  }
}

import { ioInstance } from './webSocket.js';

export const myServerAction = async (args, context) => {
  // Your action logic here
  
  // Emit a WebSocket event
  if (ioInstance) {
    ioInstance.emit('someEvent', { data: 'Some data' });
  }
}

It's important to note that this is a workaround and not an official feature of Wasp. The Wasp team is aware of this limitation and there's an open issue to address it: Enable using the Websocket server inside of server-side code outside of the Websocket init function (https://github.com/wasp-lang/wasp/issues/1289). For future updates on this feature, you may want to keep an eye on the GitHub issue or the Wasp documentation. Web Sockets Documentation (https://wasp-lang.dev/docs/advanced/web-sockets) ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @victor, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

victorOP•6d ago

@kapa.ai i tried this and no error but i cant even get the console log in my websocket action

kapa.ai•6d ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- I understand you're having trouble with the WebSocket implementation in your Wasp application. Let's try to troubleshoot this issue based on the information available in the knowledge sources. First, it's important to ensure that your WebSocket setup is correct. Here are a few things to check: 1. Make sure you have properly defined the webSocketFn in your Wasp file:

app todoApp {
  // ...
  webSocket: {
    fn: import { webSocketFn } from "@src/webSocket",
    autoConnect: true, // This is optional, default is true
  },
}

app todoApp {
  // ...
  webSocket: {
    fn: import { webSocketFn } from "@src/webSocket",
    autoConnect: true, // This is optional, default is true
  },
}

2. In your webSocket.js file, ensure you have the correct implementation:

export const webSocketFn = (io, context) => {
  io.on('connection', (socket) => {
    console.log('A user connected');
    // Your other socket event handlers
  });
}

export const webSocketFn = (io, context) => {
  io.on('connection', (socket) => {
    console.log('A user connected');
    // Your other socket event handlers
  });
}

3. If you're not seeing any console logs, it could be that the WebSocket connection is not being established. Make sure your client is properly connecting to the WebSocket server. 4. If you're trying to use the WebSocket instance outside of the webSocketFn, remember that the workaround we discussed earlier is not an official feature and might have limitations. If you've done all of these and you're still not seeing any console logs or getting the expected behavior, it's possible that there might be an issue with how Wasp is handling WebSockets in your specific setup. Unfortunately, the knowledge sources don't provide enough information to troubleshoot this specific scenario in more detail. It would be helpful to have more information about your exact implementation and where you're placing the console logs. For the most up-to-date and accurate assistance, I recommend: 1. Double-checking the Web Sockets Documentation (https://wasp-lang.dev/docs/advanced/web-sockets) to ensure you haven't missed any steps. 2. If the problem persists, consider reaching out to the Wasp community on their Discord channel or opening an issue on the Wasp GitHub repository (https://github.com/wasp-lang/wasp/issues). The Wasp team and community members might be able to provide more specific guidance based on your exact implementation. Remember, WebSocket support in Wasp is still evolving, and the team is aware of some limitations, as evidenced by the open issue regarding using WebSockets outside of the init function. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @victor, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

miho•6d ago

Can you share bit of your code so we can take a closer look? Where do you expect to the see the console.log? For the server, it will be outputed in the terminal, not in the browser.

Gaming

Programming

i have websocket and i want to be able to call websocket in my server action