Missing user agent client hints debug example

main.js

(function () {
	try {
		var electron = require('electron');

		var {app, BrowserWindow, screen} = electron;

		var mainFunc = function () {
			try {
				const {width, height} = screen.getPrimaryDisplay().workAreaSize;

				var win = new BrowserWindow({
					width: width,
					height: height,
					resizable: false,
					webPreferences: {
						nodeIntegration: false,
						contextIsolation: false,
					}
				});

				var filters = [
					"*://bing.com/*",
					"*://*.bing.com/*",
					"*://google.com/*",
					"*://*.google.com/*"
				]

				win.webContents.session.webRequest.onBeforeSendHeaders({urls: filters},
					function(details, callback) {
						var requestHeaders = details.requestHeaders;

						if (!requestHeaders) {
							callback({});
							return;
						}

						var url = details.url;

						console.log(url);
						console.log("ua client hints in request headers:");

						for (var hdr in requestHeaders) {
							if (hdr.toLowerCase().includes("sec-ch")) {
								console.log(hdr, requestHeaders[hdr]);
							}
						}

						callback({});
					})

				win.webContents.session.webRequest.onHeadersReceived(function (details, callback) {
					var responseHeaders = details.responseHeaders;

					if (!responseHeaders) {
						callback({});
						return;
					}

					var url = details.url;

					console.log(url);
					console.log("ua client hints in response headers:");

					for (var hdr in responseHeaders) {
						if (hdr.toLowerCase().includes("accept-ch")) {
							console.log(hdr, responseHeaders[hdr]);
						}
					}

					callback({});
				});

				win.loadURL("https://www.bing.com/search?q=car");
				// win.loadURL("https://www.google.com/search?q=car");
			} catch (ex) {}
		}

		app.on("window-all-closed", function() {
			try {
				app.quit();
			} catch (ex) {}
		});

		app.whenReady()
			.then(mainFunc);
	} catch (ex) {}
})();

package.json

{
  "name": "app",
  "main": "main.js",
  "version": "1.0"
}