atcheck/atcheck-websocket/server.js

const WebSocket = require('ws');
var http = require('http');
const fs = require('fs');

var websocket_port = 8888;
const wss = new WebSocket.Server({port: websocket_port});
console.log("Websocket server running on port " + websocket_port);

var lookup = [];

wss.on('connection', function connection(ws) {
    lookup[ws.protocol] = ws;
});

var server = http.createServer(function (request, response) {
    response.writeHead(200, {"Content-Type": "text\plain"});
    request.setEncoding('utf8');

    if (request.method === "POST") {
        var body = '';

        request.on('data', function (chunk) {
            body += chunk;
        });

        request.on('end', function () {
            body = JSON.parse(body);
            var send_array = {
                "type": "data",
                "id": body.student_index,
                "name": body.student_name,
                "surname": body.student_surname,
                "classes_code": body.classes_code
            };
            lookup[body.classes_code].send(JSON.stringify(send_array));
            response.end("Added");
        });

    }
    else {
        response.end("Undefined request.");
    }
});

server.on('error', function (e) {
    console.log(e);
});

var http_port = 8889;
server.listen(http_port);
console.log("HTTP server running on port " + http_port);