What Socket Is Io

Socket.IO is a JavaScript library for realtime web applications. It enables realtime, bi-directional communication between web clients and servers. It has two parts: a client-side library that runs in the browser, and a server-side library for Node. js.

What port does Socket.IO use?

If you specify only the host which is different from the current host, it defaults to port 80 if the protocol is HTTP. If the protocol is HTTPS, then the port defaults to 443 .

What is Socket.IO adapter?

An Adapter is a server-side component which is responsible for broadcasting events to all or a subset of clients. When scaling to multiple Socket.IO servers, you will need to replace the default in-memory adapter by another implementation, so the events are properly routed to all clients.