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overwigger.server.js
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overwigger.server.js
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var express = require('express')
, Primus = require('primus')
, http = require('http')
, https = require('https')
, fs = require('fs')
, path = require('path')
, app = express()
, server = http.createServer(app);
var myip = require('quick-local-ip');
var net = require('net');
var SILENT = false;
// ------------------------- UTILS ----------------------------------
function log(){
SILENT || console.log.apply(this,arguments);
}
function getNetworkIP(callback) {
var socket = net.createConnection(80, 'www.google.com');
socket.on('connect', function() {
callback(undefined, socket.address().address);
socket.end();
});
socket.on('error', function(e) {
callback(e, 'error');
});
}
function toBytesInt32 (num) {
arr = new ArrayBuffer(4);
view = new DataView(arr);
view.setUint32(0, num, false);
return arr;
}
Buffer.prototype.readBytes = function () {
var messagetxt = ''
// Convert bytes to string
for(var i = 0; i < this.length; i++) {
messagetxt += String.fromCharCode(this[i]);
}
return messagetxt;
};
String.prototype.getBytes = function () {
var textBuff = new Buffer(this.toString());
var lengthBuff = new Buffer(toBytesInt32(textBuff.length));
var resultBuff = Buffer.concat([lengthBuff,textBuff]);
return resultBuff;
};
function sendToBitwig(data){
if(isBitwigConnected) bitwig.write( JSON.stringify(data).getBytes() );
}
function sendToBrowser(data){
if(primus && primus.write) primus.write(data);
}
function connectToBitwig(){
bitwig = reconnect();
bitwig.on('connect', function() {
log(' -------- Bitwig connected ---------');
isBitwigConnected = true;
});
bitwig.on('data', function(data) {
readData = data.readBytes();
let splittedData = readData.split('}{');
let setupEmitter = d => {
var parsedData = JSON.parse(d);
log('got data from Bitwig: \n', parsedData, '\n');
sendToBrowser(parsedData);
}
if( splittedData.length === 1 ){
setupEmitter(readData)
}else if(splittedData.length > 1 ){
splittedData
.map( (el,i) => {
if(i !== 0) el = '{'+el;
if(i !== splittedData.length-1 ) el+='}';
return el;
})
.forEach((d,i) => {
setupEmitter(d);
})
}
});
bitwig.on('close', function(error) {
log('connection closed');
isBitwigConnected = false;
setTimeout( connectToBitwig, 2000 )
});
bitwig.on('error', function (err) {
log(err);
});
}
// ------------------------- SERVER TO BITWIG ----------------------------------
var reconnect = net.connect.bind(this,{port: 42000, localAddress: '127.0.0.1', localPort: 50000});
var bitwig;
isBitwigConnected = false;
connectToBitwig();
// ------------------------- SERVER TO BROWSER ---------------------------------
var primus = new Primus(server, {transformer: 'websockets'});
var browser;
primus.on('connection', function (spark) {
browser = spark;
sendToBitwig({init: true});
spark.on('data', function message(data) {
log('got data from Browser: \n',data, '\n');
if(data.ip)
getNetworkIP( function (error, ip) {
spark.write(JSON.stringify({ip: ip}));
console.log('ip');
if (error) {
log("Couldn't get this machine ip, got error:", error);
}
})
else sendToBitwig(data);
});
});
primus.save(path.join(__dirname +'/src/js/primus.js'));
// ------------------------- START SERVER ---------------------------------
app.use('/',express.static('src'));
app.get('/primus/primus', function (req, res) {
res.send(primus.library());
});
// start server
server.listen(8888,'0.0.0.0');