nodejs websocket tutorial
/* Author: Logan Smith - Perkins */ // Importing the http library, used to start servers const http = require('http'); // Importing the websocket library which is used to interface between webpage and nodejs const WebSocketServer = require('websocket').server; // This server is created using the http createServer function, which enables the user to create a http connection with a webpage const server =- http.createServer(); // The server then listens on the port specified server.listen(7000); // We then create a new variable which will store the actual server I'll be running const wsServer = new WebSocketServer({ // Then we set the parameter of httpServer to the server variable that we said that would be listening on the port specified httpServer : server }); // Next we check if someome is trying to connect to the server, i.e. the name request, it's requesting access to the server wsServer.on('request', function(request){ // We store the actual connection as a variable and we accept that client to connect to this server const connection = request.accept(null, request.origin); // This function is run when this client sends a message to the server. connection.on('message', function(message){ // We print out to the console the recieved message decoded to utf8 console.log("Recieved Message: " + message.utf8Data); // Then we send specifically to this connection back a message connection.sendUTF("Hello this is the websocket server."); }); // This code is run when the user disconnects from the server. connection.on('close', function(reasonCode, description){ // We just print to the console that a client has disconnected from the server. console.log("A client has disconnected."); }); });
