Socket IO settings in n8n

[Steeve]

Describe the problem/error/question

What is the error message (if any)?

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Information on your n8n setup

• **n8n version:Cloud
• Database (default: SQLite):
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app):
• Operating system:

[Steeve]

Hello, I try to use socket IO with n8n. I download the code below for testing

but I have this error message:

VMError: Cannot find module 'socket.io-client' at LegacyResolver.resolveFull

Can anyone help?

[Steeve]

const io = require('socket.io-client');

// Setup promise to handle WebSocket response
return new Promise((resolve, reject) => {
  const serverUrl = 'wss://ws.postman-echo.com/socketio';
  const socket = io(serverUrl, { transports: ['websocket'] });

  // Connect event
  socket.on('connect', () => {
    console.log('Connected to WebSocket server');
    // Send a message upon connection
    socket.emit('message', 'Hello, Postman!');
  });

  // Message event
  socket.on('message', (data) => {
    console.log('Message received:', data);
    // Resolve the promise after receiving a message
    // Ensure we close the socket connection
    socket.disconnect();
    resolve([{ json: { message: data } }]); // Return received data
  });

  // Disconnect event
  socket.on('disconnect', () => {
    console.log('Disconnected from WebSocket server');
  });

  // Error event
  socket.on('error', (error) => {
    console.log('WebSocket error:', error);
    reject([{ json: { error: error.message } }]); // Handle errors
  });
});

[mcnaveen]

Hi @Steeve

I hope you’re doing well.

Please share your use case on what you would like to achieve