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Frontend Academy · Lesson

Socket.io Client Integration

Connect the Socket.io client, listen to named events, emit data to the server, handle reconnection logic, and manage rooms from the client side.

What Socket.io Adds Over Raw WebSocket

Socket.io is a popular library on top of WebSocket. It adds: automatic reconnection, fallback to long-polling, rooms/namespaces, acknowledgement callbacks, named events. Pairs a client lib with a server lib (Node.js).

Installing the Client

Install socket.io-client. It must match the server's major version.

npm install socket.io-client

All lessons in this course

  1. WebSocket API: open message close error
  2. Socket.io Client Integration
  3. Server-Sent Events for One-Way Streaming
  4. Real-time UI Patterns
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