Electron set cookie - node.js

Question

I am new to electron and converting an web app to desktop application.I am loading pages from file system.Cookies are working if pages are served from web server but when I load pages from local folder I am not able to save them. I am saving cookie using document.cookie in web.I want to know how I can I enable file:// cookies in electron .
Regards

Answer 1

Well, I want to answer my question in case somebody is having the same problem. I have fixed the cookie problem by registerStandardSchemes. The sample code is as follows and code works for saving cookies from web pages as well:
protocol.registerStandardSchemes(["app"], {
secure: true
});
and on ready event
protocol.registerFileProtocol('app', (request, callback) => {
const urls = request.url.substr(6)
const parsedUrl = url.parse(urls);
// extract URL path
const pathname = `.${parsedUrl.pathname}`;
// based on the URL path, extract the file extention. e.g. .js, .doc, ...
const ext = path.parse(pathname).ext;
callback({
path: path.normalize(`${__dirname}/${parsedUrl.pathname}`)
})
}, (error) => {
if (error) {
console.error('Failed to register protocol');
}
});

Answer 2

Follow the documentation to get it done, and use the standard.https://electronjs.org/docs/api/cookies
const {session} = require('electron')
// Query all cookies.
session.defaultSession.cookies.get({}, (error, cookies) => {
console.log(error, cookies)
})
// Query all cookies associated with a specific url.
session.defaultSession.cookies.get({url: 'http://www.github.com'}, (error, cookies) => {
console.log(error, cookies)
})
// Set a cookie with the given cookie data;
// may overwrite equivalent cookies if they exist.
const cookie = {url: 'http://www.github.com', name: 'dummy_name', value: 'dummy'}
session.defaultSession.cookies.set(cookie, (error) => {
if (error) console.error(error)
})

Answer 3

OK, I got it working with Electron 5. Below are the relevant bits based on #zahid-nisar's solution, and below that a full sample Electron main.js to show how it all fits together. Obviously, change the location of your app in mainWindow.loadURL('app://www/index.html');.
Relevant code to insert in main.js:
const { protocol } = require('electron');
protocol.registerSchemesAsPrivileged([{
scheme: 'app',
privileges: {
standard: true,
secure: true
}
}]);
Inside app.on('ready') function:
protocol.registerFileProtocol('app', (request, callback) => {
const url = request.url.substr(6);
callback({
path: path.normalize(`${__dirname}/${url}`)
});
}, (error) => {
if (error) console.error('Failed to register protocol');
});
Then, inside your createWindow function, load your app like this:
mainWindow.loadURL('app://www/index.html');
And finally, here is a complete sample main.js with the above code (plus extras that I need, like Service Worker):
// Modules to control application life and create native browser window
const {
app,
protocol,
BrowserWindow
} = require('electron');
const path = require('path');
// This is used to set capabilities of the app: protocol in onready event below
protocol.registerSchemesAsPrivileged([{
scheme: 'app',
privileges: {
standard: true,
secure: true,
allowServiceWorkers: true,
supportFetchAPI: true
}
}]);
// 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;
function createWindow() {
// Create the browser window.
mainWindow = new BrowserWindow({
width: 800,
height: 600
//, webPreferences: {
// preload: path.join(__dirname, 'preload.js')
// }
});
// and load the index.html of the app.
mainWindow.loadURL('app://www/index.html');
// DEV: Enable code below to check cookies saved by app in console log
// mainWindow.webContents.on('did-finish-load', function() {
// mainWindow.webContents.session.cookies.get({}, (error, cookies) => {
// console.log(cookies);
// });
// });
// Open the DevTools.
// mainWindow.webContents.openDevTools()
// 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', () => {
protocol.registerFileProtocol('app', (request, callback) => {
const url = request.url.substr(6);
callback({
path: path.normalize(`${__dirname}/${url}`)
});
}, (error) => {
if (error) console.error('Failed to register protocol');
});
// Create the new window
createWindow();
});
// Quit when all windows are closed.
app.on('window-all-closed', function () {
// On macOS 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.quit();
});
app.on('activate', function () {
// On macOS 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) createWindow();
});
// 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.