Developer Replaces Socket.IO with Raw WebSockets, Shares Lessons on Trade-offs

A developer building a Node.js real-time application chose to replace Socket.IO with native WebSockets after finding the library's abstractions difficult to debug and understand. Socket.IO offers built-in features like automatic reconnection, HTTP long-polling fallback, rooms, namespaces, and heartbeat management, all of which had to be rebuilt manually after the switch. The developer argued that HTTP polling fallback is largely obsolete given near-universal modern browser support for native WebSockets, and that Socket.IO's client-server lock-in limited backend flexibility. Replacing it required writing a custom reconnection handler using exponential backoff logic to replicate behaviour that Socket.IO previously handled automatically. The experience highlighted that while raw WebSockets offer greater control and transparency, they demand significantly more implementation effort from the developer.