Kotlin Blueprints

Listening to events

With the Socket.IO library, you should open a port and listen to the request using the following lines of code. Initially, we were directly using app.listen(), but now, we will pass that function as a listener for sockets:

    val io = require("socket.io").listen(app.listen(port, {      println("Chat app listening on port http://localhost:$port")    }))

The server will listen to the following events and based on those events, it will perform certain tasks:

• Listen to the successful socket connection with the client
• Listen for the new user login events
• Whenever a new user joins the chat, add it to the online users chat list and broadcast it to every client so that they will know that a new member has joined the chat
• Listen to the ...