Can I upload a file to server by socket.io in node.js?

Question

I have a socket.io client to whom socket.io server is listening in node.js. I want to upload a file to server by socket.io. be

Answer 1

In May of 2014 with release version 1.0 of socket.IO, binary support has been added to the library.

Socket.IO now supports emitting Buffer (from Node.JS), Blob, ArrayBuffer and even File, as part of any datastructure

It's all due to low level api which is provided by engine.io.