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Created Mar 30, 2019
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Electron Fiddle Gist
<!DOCTYPE html>
<meta charset="UTF-8">
<title>Hello World!</title>
<h1>Hello World!</h1>
<!-- All of the Node.js APIs are available in this renderer process. -->
We are using Node.js <script>document.write(process.versions.node)</script>,
Chromium <script>document.write(</script>,
and Electron <script>document.write(process.versions.electron)</script>.
// You can also require other files to run in this process
// Modules to control application life and create native browser window
const {app, BrowserWindow} = require('electron')
const { PassThrough } = require('stream')
const axios = require('axios')
// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow
class UploadData {
static getBlobFromUUID(ses, identifier) {
return new Promise(resolve => ses.getBlobData(identifier, result => resolve(result)));
static async getData(uploadData, ses) {
const data = uploadData[0] || {};
if (data.blobUUID) {
return this.getBlobFromUUID(ses, data.blobUUID);
if (data.bytes) {
return data.bytes;
return undefined;
function createWindow () {
// Create the browser window.
mainWindow = new BrowserWindow({
width: 800,
height: 600,
webPreferences: {
nodeIntegration: false,
async (request, callback) => {
let response;
try {
const {headers, method, url} = request;
const uploadData = typeof request.uploadData !== 'undefined' ? await UploadData.getData(request.uploadData, mainWindow.webContents.session) : undefined;
const options = {
responseType: 'stream',
data: uploadData,
response = await axios(options);
return callback({
headers: response.headers,
statusCode: response.status,
} catch (error) {
if (error.response) {
response = error.response;
} else if (error.request) {
debugInterceptProtocol('Error during the request. Aborting.');
return callback();
} else {
debugInterceptProtocol('Unknown error during the request. Aborting.');
return callback();
}, (error) => {
if (error) {
throw error;
// and load the index.html of the app.
// Open the DevTools.
// Emitted when the window is closed.
mainWindow.on('closed', function () {
// Dereference the window object, usually you would store windows
// in an array if your app supports multi windows, this is the time
// when you should delete the corresponding element.
mainWindow = null
// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)
// Quit when all windows are closed.
app.on('window-all-closed', function () {
// On OS X it is common for applications and their menu bar
// to stay active until the user quits explicitly with Cmd + Q
if (process.platform !== 'darwin') {
app.on('activate', function () {
// On OS X it's common to re-create a window in the app when the
// dock icon is clicked and there are no other windows open.
if (mainWindow === null) {
// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.
// This file is required by the index.html file and will
// be executed in the renderer process for that window.
// All of the Node.js APIs are available in this process.
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