WebSocket is a protocol that enables two-way persistent communication channels over TCP connections. It is used for applications such as chat, stock tickers, games, anywhere you want real-time functionality in a web application.
Use WebSockets when you need to work directly with a socket connection. For example, you might need the best possible performance for a real-time game.
First of all, read the kataras/neffos wiki to master the new websocket library built for net/http and Iris.
It comes pre-installed with Iris, however you can install it separately by executing the following shell command.
$ go get
Continue by reading how you can register the neffos websocket server into your Iris application.
A list of comprehensive examples working with websockets can be found at:
The iris/websocket subpackage contains (only) Iris-specific migrations and helpers for the neffos websocket framework one.
For example, to gain access of the request's Context you can call the websocket.GetContext(Conn) from inside an event message handler/callback:
// GetContext returns the Iris Context from a websocket connection.
func GetContext(c *neffos.Conn) Context
To register a websocket neffos.Server to a route use the websocket.Handler function:
// IDGenerator is an iris-specific IDGenerator for new connections.
type IDGenerator func(Context) string
// Handler returns an Iris handler to be served in a route of an Iris application.
// Accepts the neffos websocket server as its first input argument
// and optionally an Iris-specific `IDGenerator` as its second one.
func Handler(s *neffos.Server, IDGenerator ...IDGenerator) Handler
import (
// [...]
onChat := func(ns *neffos.NSConn, msg neffos.Message) error {
ctx := websocket.GetContext(ns.Conn)
// [...]
return nil
app := iris.New()
ws := neffos.New(websocket.DefaultGorillaUpgrader, neffos.Namespaces{
"default": neffos.Events {
"chat": onChat,
app.Get("/websocket_endpoint", websocket.Handler(ws))