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Editorial Team
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Asked: 2026-06-02T01:16:14+00:00

What are the differences between socket.io and websockets in node.js? Are they both server

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What are the differences between socket.io and websockets in
node.js?
Are they both server push technologies?
The only differences I felt was,

  1. socket.io allowed me to send/emit messages by specifying an event name.

  2. In the case of socket.io a message from server will reach on all clients, but for the same in websockets I was forced to keep an array of all connections and loop through it to send messages to all clients.

Also,
I wonder why web inspectors (like Chrome/firebug/fiddler) are unable to catch these messages (from socket.io/websocket) from server?

Please clarify this.

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1 Answer

  1. Editorial Team

    Its advantages are that it simplifies the usage of WebSockets as you described in #2, and probably more importantly it provides fail-overs to other protocols in the event that WebSockets are not supported on the browser or server. I would avoid using WebSockets directly unless you are very familiar with what environments they don’t work and you are capable of working around those limitations.

    This is a good read on both WebSockets and Socket.IO.

    http://davidwalsh.name/websocket

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