node-red-contrib-real-socket-io-client

A Node-RED node that provides a simple yet powerful Socket.IO client interface. This package allows you to create and manage socket.io-client connections directly from your Node-RED flows, enabling seamless real-time communication with Socket.IO servers.

Features

• 🌐 Connect to a Socket.IO server from within Node-RED
• 📤 Emit events with custom names and payloads
• 🔌 Maintains a persistent connection using the latest socket.io-client
• 🔧 Simple configuration through the Node-RED editor

Install

To install the node, navigate to your Node-RED user directory (typically ~/.node-red) and run:

npm install node-red-contrib-real-socket-io-client

Then restart Node-RED:

node-red

Or use the Node-RED editor's Manage Palette feature to install the node via the UI.

Usage

Configuration

1. Drag the real-socket-io-client node into your flow.

2. Double-click to configure:

   • Server URL – The full Socket.IO server URL (e.g., http://localhost:3000)
   • Optional connection options (e.g., path)

3. In the input payload:

   • msg.event – Name of the event to emit (required)
   • msg.payload – Data to send with the event

Example

{
  "eventId": "my-custom-event",
  "payload": {
    "message": "Hello, server!"
  }
}

Node Input

Property	Type	Description
msg.eventId	string	The name of the Socket.IO event
msg.payload	any	Data to send with the event emit

Compatibility

• Compatible with Socket.IO v4+
• Requires Node-RED v2.0 or later

License

MIT

Author

Developed and maintained by Niccolo' Di Chio