Matchmaking with socket.io

How to create a socket Io server?

Creating a Socket.io server requires us to run a Javascript application using the Socket.io library, listening for player connections. Socket.io is a Javascript networking library that simplifies a lot of the under-workings of building a networked application for us.

How do I create a socket event for a room name?

This line creates a socket event (as a lambda expression) on the server, listening for Emits with the event createRoom. The first parameter is the value we pass through the Emit to Socket behaviour, in this case the room name the user typed in. Here, weve named that parameter roomName.

How do you use Socket events?

We use a Socket Event when the server is checking which player is tagged as It, which is emitted by beginRound (line 99) on the server. Then, we grab our objects server ID from the array and use the Dictionary Value to break it down into the various pieces of data it contains.

What is the difference between socket event and emit to socket?

Socket Event can be thought of as Receive Message since it will only activate once the set message has been broadcasted from the server. The best way to think when using Socket Event and Emit to Socket is that Socket Event reacts only to information coming from the server, whereas Emit to Socket is called in reaction to things done locally.

How do I create a socket Io server in express?

Install Express and Socket.io and save them to our package.json file for later Let’s begin by creating an express server that displays Hello World. Create a new file in the socket-app folder. In the app.js file above, we are requiring Express, and creating a new server. We are then requiring Socket.io.

How do I create a socket server in Node JS?

Steps to create the socket server: Go to the App.js file and Import Socket.IO and http module as: var http=require (http); var socketio=require (socket.io); Create a socket IO server:

What is socket Io in Linux?

What is socket.io? Socket.io is an abstraction built over the WebSockets protocol. Websockets is a protocol that allows a bilateral synchronous exchange between a client and a server. Or a bi-directional communication pipe in simple words

What are web sockets in Java?

Web Sockets are the base of the Socket.IO library. It is easier to implement the Socket.IO in the express applications that are not formed with express-generator. Socket.IO mainly works on events based communication. Here the server or the client emits an event and it is being caught by another one.

What is the use of socket emit?

Simple and precise (Source: Socket.IO google group ): socket.emit allows you to emit custom events on the server and client socket.send sends messages which are received with the message event.

What is the difference between Io socket broadcast and Io socket emit?

socket.broadcast.emit () behaves similar to io.sockets.emit, but instead of emitting to all connected sockets it will emit to all connected socket except the one it is being called on. So in this case the socket referenced by socket will not receive the event.

How to register custom event with socket emit?

With socket.emit you can register custom event like that: server: var io = require(socket.io).listen(80); io.sockets.on(connection, function (socket) { socket.emit(news, { hello: world }); socket.on(my other event, function (data) { console.log(data); }); }); client:

How to send/emit a message from a socket in HTML?

In index.html socket.emit (send, { message: msg }); this line of code actually sends/emits message to server which is waiting to listen on socket.on (send, function (msg) { this line of code in server.js.