Socket.IO - Go

This is a Socket.IO library for Go.

Compatibility

In the near future I plan to support last 2 versions of Go. For now supported Go version is 1.16.

The least supported Socket.IO version is 3.0. If you have an older version of Socket.IO in your other projects, please consider upgrading your dependencies.

JavaScript Socket.IO version	Socket.IO protocol revision	Engine.IO protocol revision	socket.io-go version
0.9.x	1, 2	1, 2	Not supported
1.x, 2.x	3, 4	3	Not supported
3.x, 4.x	5	4	0.x

Design Goals

Q&A

Why use Socket.IO?

I want to send big files.

Sometimes Socket.IO doesn't notice when the network connection is down.

Try reducing pingInterval and pingTimeout.

Guide

Transports

If you are a contributor please see: Developing a Transport

Reserved events

When you call socket.On the handler...

These are reserved events:

connect
connect_error
disconnect
disconnecting

open
error
ping

close
reconnect
reconnect_attempt
reconnect_error
reconnect_failed

JSON

JSON serialization is highly customizable. Under the parser/json/serializer directory there are different packages for JSON serialization:

Name	Description	Usage
stdjson	stdlib's encoding/json. This is the default serializer.	README.md
go-json		README.md
sonic		README.md
fast	Conditionally uses sonic or go-json.	README.md

Contributing

Contributions are very welcome. Please read this page.