How to use createCDPSession method in Puppeteer
Best JavaScript code snippet using puppeteer
withDevice.js
Source:withDevice.js 
...54};55(async () => {56 const browser = await puppeteer.launch();57 const page = await browser.newPage();58 const client = await page.target().createCDPSession();59 await client.send('Network.enable');60 await client.send('Network.emulateNetworkConditions', NETWORK_PRESETS['Regular2G']);61 await page.goto(WEB);62 const performanceTiming = JSON.parse(63 await page.evaluate(() => JSON.stringify(window.performance.timing))64 );65 const loadWithDOM = performanceTiming.domComplete - performanceTiming.navigationStart;66 const all = performanceTiming.loadEventEnd - performanceTiming.navigationStart;67 console.log('User can see content for Regular2G ~', loadWithDOM / 1000, 'sec');68 console.log('All Load for Regular2G --', all / 1000, 'sec');69 await browser.close();70})();71(async () => {72 const browser = await puppeteer.launch();73 const page = await browser.newPage();74 const client = await page.target().createCDPSession();75 await client.send('Network.enable');76 await client.send('Network.emulateNetworkConditions', NETWORK_PRESETS['WiFi']);77 await page.goto(WEB);78 const performanceTimingFast = JSON.parse(79 await page.evaluate(() => JSON.stringify(window.performance.timing))80 );81 const loadWithDOMFast = performanceTimingFast.domComplete - performanceTimingFast.navigationStart;82 const allFast = performanceTimingFast.loadEventEnd - performanceTimingFast.navigationStart;83 console.log('User can see content with WiFi ~', loadWithDOMFast / 1000, 'sec');84 console.log('All Load with WiFi --', allFast / 1000, 'sec');85 await browser.close();86})();87(async () => {88 const browser = await puppeteer.launch();89 const page = await browser.newPage();90 await page.emulate(iPhonex);91 const client = await page.target().createCDPSession();92 await client.send('Network.enable');93 await client.send('Network.emulateNetworkConditions', NETWORK_PRESETS['WiFi']);94 await page.goto(WEB);95 const performanceTimingFast = JSON.parse(96 await page.evaluate(() => JSON.stringify(window.performance.timing))97 );98 const loadWithDOMFast = performanceTimingFast.domComplete - performanceTimingFast.navigationStart;99 const allFast = performanceTimingFast.loadEventEnd - performanceTimingFast.navigationStart;100 console.log('[iPhone X] User can see content with WiFi ~', loadWithDOMFast / 1000, 'sec');101 console.log('[iPhone X] All Load with WiFi --', allFast / 1000, 'sec');102 await browser.close();...
CDPSession.spec.js
Source:CDPSession.spec.js
...24 setupTestBrowserHooks();25 setupTestPageAndContextHooks();26 it('should work', async () => {27 const { page } = getTestState();28 const client = await page.target().createCDPSession();29 await Promise.all([30 client.send('Runtime.enable'),31 client.send('Runtime.evaluate', { expression: 'window.foo = "bar"' }),32 ]);33 const foo = await page.evaluate(() => window.foo);34 expect(foo).toBe('bar');35 });36 it('should send events', async () => {37 const { page, server } = getTestState();38 const client = await page.target().createCDPSession();39 await client.send('Network.enable');40 const events = [];41 client.on('Network.requestWillBeSent', (event) => events.push(event));42 await page.goto(server.EMPTY_PAGE);43 expect(events.length).toBe(1);44 });45 it('should enable and disable domains independently', async () => {46 const { page } = getTestState();47 const client = await page.target().createCDPSession();48 await client.send('Runtime.enable');49 await client.send('Debugger.enable');50 // JS coverage enables and then disables Debugger domain.51 await page.coverage.startJSCoverage();52 await page.coverage.stopJSCoverage();53 // generate a script in page and wait for the event.54 const [event] = await Promise.all([55 waitEvent(client, 'Debugger.scriptParsed'),56 page.evaluate('//# sourceURL=foo.js'),57 ]);58 // expect events to be dispatched.59 expect(event.url).toBe('foo.js');60 });61 it('should be able to detach session', async () => {62 const { page } = getTestState();63 const client = await page.target().createCDPSession();64 await client.send('Runtime.enable');65 const evalResponse = await client.send('Runtime.evaluate', {66 expression: '1 + 2',67 returnByValue: true,68 });69 expect(evalResponse.result.value).toBe(3);70 await client.detach();71 let error = null;72 try {73 await client.send('Runtime.evaluate', {74 expression: '3 + 1',75 returnByValue: true,76 });77 } catch (error_) {78 error = error_;79 }80 expect(error.message).toContain('Session closed.');81 });82 it('should throw nice errors', async () => {83 const { page } = getTestState();84 const client = await page.target().createCDPSession();85 const error = await theSourceOfTheProblems().catch((error) => error);86 expect(error.stack).toContain('theSourceOfTheProblems');87 expect(error.message).toContain('ThisCommand.DoesNotExist');88 async function theSourceOfTheProblems() {89 await client.send('ThisCommand.DoesNotExist');90 }91 });...
CDPSession.js
Source:CDPSession.js
...17 await helper.end()18})19test.serial('Target.createCDPSession should work', async t => {20 const { page, server } = t.context21 const client = await page.target().createCDPSession()22 await Promise.all([23 client.send('Runtime.enable'),24 client.send('Runtime.evaluate', { expression: 'window.foo = "bar"' })25 ])26 const foo = await page.evaluate(() => window.foo)27 t.is(foo, 'bar')28})29test.serial('Target.createCDPSession should send events', async t => {30 const { page, server } = t.context31 const client = await page.target().createCDPSession()32 await client.send('Network.enable')33 const events = []34 client.on('Network.requestWillBeSent', event => events.push(event))35 await page.goto(server.EMPTY_PAGE)36 t.is(events.length, 1)37})38test.serial(39 'Target.createCDPSession should enable and disable domains independently',40 async t => {41 const { page, server } = t.context42 const client = await page.target().createCDPSession()43 await client.send('Runtime.enable')44 await client.send('Debugger.enable')45 // JS coverage enables and then disables Debugger domain.46 await page.coverage.startJSCoverage()47 await page.coverage.stopJSCoverage()48 // generate a script in page and wait for the event.49 const script = '() => it'50 const [event] = await Promise.all([51 waitEvent(client, 'Debugger.scriptParsed'),52 page.evaluate(script)53 ])54 // expect events to be dispatched.55 t.truthy(event)56 }57)58test.serial(59 'Target.createCDPSession should be able to detach session',60 async t => {61 const { page, server } = t.context62 const client = await page.target().createCDPSession()63 await client.send('Runtime.enable')64 const evalResponse = await client.send('Runtime.evaluate', {65 expression: '1 + 2',66 returnByValue: true67 })68 t.is(evalResponse.result.value, 3)69 await client.detach()70 let error = null71 try {72 await client.send('Runtime.evaluate', {73 expression: '3 + 1',74 returnByValue: true75 })76 } catch (e) {77 error = e78 }79 t.true(error.message.includes('Session closed.'))80 }81)82test.serial('Target.createCDPSession should throw nice errors', async t => {83 const { page } = t.context84 const client = await page.target().createCDPSession()85 const error = await theSourceOfTheProblems().catch(error => error)86 t.true(error.stack.includes('theSourceOfTheProblems'))87 t.true(error.message.includes('ThisCommand.DoesNotExist'))88 async function theSourceOfTheProblems () {89 await client.send('ThisCommand.DoesNotExist')90 }...
index.js
Source:index.js
...23 let res = [];24 // ------- first browser run ---------25 let browser = await puppeteer.launch();26 let page = await browser.newPage();27 let client = await page.target().createCDPSession();28 await emulateConditions(client);29 // first enter test30 res = [31 ...res,32 ...convertResultsToArr(await testPage(page, client), 'firstEnter'),33 ];34 bar.tick();35 await page.close();36 page = await browser.newPage();37 client = await page.target().createCDPSession();38 await emulateConditions(client);39 // second enter test with ServiceWorker and cache40 res = [41 ...res,42 ...convertResultsToArr(await testPage(page, client), 'swAndCache'),43 ];44 bar.tick();45 await browser.close();46 // ------- second browser run ---------47 browser = await puppeteer.launch();48 page = await browser.newPage();49 client = await page.target().createCDPSession();50 // first enter only for hydration ServiceWorker and cache51 await testPage(page, client);52 bar.tick();53 await page.close();54 page = await browser.newPage();55 client = await page.target().createCDPSession();56 await emulateConditions(client);57 await client.send('ServiceWorker.enable');58 await client.send('ServiceWorker.unregister', {59 scopeURL: 'http://localhost:8080/',60 });61 // second enter test with cache62 res = [63 ...res,64 ...convertResultsToArr(await testPage(page, client), 'cache'),65 ];66 bar.tick();67 await browser.close();68 // ------- third browser run ---------69 browser = await puppeteer.launch();70 page = await browser.newPage();71 client = await page.target().createCDPSession();72 // first enter only for hydration ServiceWorker and cache73 await testPage(page, client);74 bar.tick();75 await page.close();76 page = await browser.newPage();77 client = await page.target().createCDPSession();78 await emulateConditions(client);79 await client.send('Network.clearBrowserCache');80 // second enter test with ServiceWorker81 res = [...res, ...convertResultsToArr(await testPage(page, client), 'sw')];82 bar.tick();83 await browser.close();84 const file = JSON.parse(await promisify(fs.readFile)(filePath));85 await promisify(fs.writeFile)(filePath, JSON.stringify([...file, ...res]));86 }87};...
connect_to_browser.js
Source:connect_to_browser.js
...11 12 browser.on('targetchanged', async (target) => {13 if (target.type() === 'page') {14 console.log('\n[targetchanged event]\n');15 let cdp = await target.createCDPSession();16 var page = await target.page();17 18 serve_history_page(cdp);19 runPageOperations(page, cdp);20 }21 })22 //Get tagets for tabs opened in the background23 // ex: tabs that are opened by middle click24 browser.on('targetcreated', async (target) => {25 if (target.type() === 'page') {26 console.log('\nnew tab opened\n');27 let cdp = await target.createCDPSession();28 var page = await target.page();29 30 serve_history_page(cdp);31 runPageOperations(page, cdp);32 }33 });34 //TODO make sure to on the run these functions ^ single35 //Make a test to see if the page target is already being handled 36 37 const pages = (await browser.pages());38 console.log('open pages:');39 console.log(pages.length);40 var cdp = await pages[0].target().createCDPSession();41 var targets = await cdp.send('Target.getTargets');42 console.log('targets:');43 console.log(targets['targetInfos'].length);44 var attached_targets = 0;45 targets['targetInfos'].forEach(async (target) => {46 if (target['attached'] == true)47 {48 attached_targets++;49 }50 })51 console.log('attached targets:');52 console.log(attached_targets);53 // Handle when the page gets closed suddenly54 process.on('unhandledRejection', (reason) => {...
clearData.js
Source:clearData.js
...6 await waitFor(7 async () => {8 let closeCdpSession = false;9 if (!cdpSession) {10 cdpSession = await this.target().createCDPSession();11 closeCdpSession = true;12 }13 await Promise.all([14 cdpSession.send('Network.clearBrowserCookies'),15 this.evaluate(() => localStorage.clear()).catch(err => {16 logger.warn('fail to clear localStorage', err);17 }),18 this.evaluate(() => sessionStorage.clear()).catch(err => {19 logger.warn('fail to clear sessionStorage', err);20 }),21 ]);22 if (closeCdpSession) await cdpSession.detach();23 },24 { timeout: 20000, message: 'unable to clear user data' },25 );26 } catch (err) {27 err.message = `failed to clear user data.\n${err.message}`;28 logger.error(err);29 throw err;30 }31}32async function clearCache(cdpSession = null) {33 try {34 if (!cdpSession) cdpSession = await this.target().createCDPSession();35 // Wipe entire disk cache36 await cdpSession.send('Network.clearBrowserCache');37 // Toggle 'Disable Cache' to evict the memory cache38 await cdpSession.send('Network.setCacheDisabled', { cacheDisabled: true });39 await cdpSession.send('Network.setCacheDisabled', { cacheDisabled: false });40 } catch (err) {41 err.message = `failed to clear user cache.\n${err.message}`;42 logger.error(err);43 throw err;44 }45}46async function clearAllData() {47 const cdpSession = await this.target().createCDPSession();48 await Promise.all([49 this.clearCache(cdpSession),50 this.clearUserData(cdpSession),51 cdpSession.send('Storage.clearDataForOrigin', {52 origin: new URL(url).origin,53 storageTypes: 'all',54 }),55 ]);56 await cdpSession.detach();57}58module.exports = {59 clearUserData,60 clearCache,61 clearAllData,...
test.js
Source:test.js
1const EventEmitter = require('events');2const test = require('tape');3const {stub} = require('sinon');4test('PuppeteerNetworkStats', async (t) => {5 t.plan(6);6 const PuppeteerNetworkStats = require('./index');7 const mockClient = new EventEmitter();8 mockClient.send = stub();9 mockClient.detach = stub();10 const createCDPSession = stub().returns(mockClient);11 const mockPage = {target: () => ({createCDPSession})};12 const networkStats = new PuppeteerNetworkStats({13 requestWillBeSent: ({request: {url}}) => ({url}),14 responseReceived: ({response: {status}}) => ({status})15 });16 await networkStats.attach(mockPage);17 t.ok(18 createCDPSession.calledOnce,19 'attach creates client'20 );21 t.ok(22 mockClient.send.calledWith('Network.enable'),23 'attach enables Network'24 );25 const id = 1;26 const url = 'https://www.example.com';27 mockClient.emit(28 'Network.requestWillBeSent',29 {requestId: id, request: {url}}30 );31 t.equal(32 networkStats.getRequests()[id].url, url,33 'configured parameters are captured from an event'34 );35 const status = 200;36 mockClient.emit(37 'Network.responseReceived',38 {requestId: id, response: {status}}39 );40 t.deepEqual(41 networkStats.getRequests()[id], {status, url},42 'event with same request id has its captured parameters merged'43 );44 await networkStats.detach(mockPage);45 t.ok(mockClient.detach.calledOnce, 'detach calls client.detach');46 networkStats.clearRequests();47 t.deepEqual(48 networkStats.getRequests(), {},49 'clearRequests clears captured requests'50 );...
util.js
Source:util.js
1async function minimize(page) {2 const session = await page.target().createCDPSession();3 const goods = await session.send("Browser.getWindowForTarget");4 const { windowId } = goods;5 await session.send("Browser.setWindowBounds", {6 windowId,7 bounds: { windowState: "minimized" },8 });9 10 return;11 }12 13async function maximize(page) {14 const session = await page.target().createCDPSession();15 const goods = await session.send("Browser.getWindowForTarget");16 const { windowId } = goods;17 await session.send("Browser.setWindowBounds", {18 windowId,19 bounds: { windowState: "normal" },20 });21 }22module.exports = {23 minimize,24 maximize...
Using AI Code Generation
1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 const client = await page.target().createCDPSession();6 await client.send('Network.enable');7 await page.screenshot({path: 'example.png'});8 await browser.close();9})();
Using AI Code Generation
1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 const client = await page.target().createCDPSession();6 await client.send('Network.enable');7 await client.send('Network.setExtraHTTPHeaders', {headers: { 'X-My-Custom-Header': 'MyCustomHeaderValue' }});8 await browser.close();9})();10const puppeteer = require('puppeteer');11(async () => {12 const browser = await puppeteer.launch();13 const page = await browser.newPage();14 await page.setExtraHTTPHeaders({15 });16 await browser.close();17})();18const puppeteer = require('puppeteer');19(async () => {20 const browser = await puppeteer.launch();21 const page = await browser.newPage();22 await page.setExtraHTTPHeaders({23 });24 await browser.close();25})();26const puppeteer = require('puppeteer');27(async () => {28 const browser = await puppeteer.launch();29 const page = await browser.newPage();30 await page.setExtraHTTPHeaders({31 });32 await browser.close();33})();34const puppeteer = require('puppeteer');35(async () => {36 const browser = await puppeteer.launch();37 const page = await browser.newPage();38 await page.setExtraHTTPHeaders({39 });40 await browser.close();41})();42const puppeteer = require('puppeteer');
Using AI Code Generation
1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 const client = await page.target().createCDPSession();6 await client.send('Network.enable');7 client.on('Network.requestWillBeSent', (params) => {8 console.log(params.request.url);9 });10 await browser.close();11})();12const puppeteer = require('puppeteer');13(async () => {14 const browser = await puppeteer.launch({headless: false});15 const page = await browser.newPage();16 await page.goto(url);17 await page.waitForSelector('input[name="q"]');18 await page.$eval('input[name="q"]', (el, value) => el.value = value, 'puppeteer');19 await page.click('input[name="btnK"]');20 await page.waitForNavigation();21 await browser.close();22})();23const cookies = await page.cookies();24console.log(cookies);25const cookies = await page._client.send('Network.getAllCookies');26console.log(cookies);27const puppeteer = require('puppeteer');28(async () => {
Using AI Code Generation
1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 const client = await page.target().createCDPSession();6 await client.send('Page.enable');7 await client.send('Page.captureScreenshot', { format: 'png', fromSurface: true })8 .then((image) => {9 console.log(image);10 });11 await browser.close(
Using AI Code Generation
1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch({headless: false});4 const page = await browser.newPage();5 const client = await page.target().createCDPSession();6 const response = await client.send('Network.enable');7 console.log(response);8 await browser.close();9})();10{ id: 1, result: {} }
Using AI Code Generation
1const puppeteer = require('puppeteer');2const fs = require('fs');3(async () => {4 const browser = await puppeteer.launch();5 const page = await browser.newPage();6 const client = await page.target().createCDPSession();7 await client.send('Page.enable');8 await client.send('Page.captureScreenshot', {format: 'jpeg', fromSurface: true})9 .then(result => {10 fs.writeFile('screenshot.jpeg', result.data, 'base64', function (err) {11 if (err) {12 console.log(err);13 }14 console.log('File created');15 });16 });17 await browser.close();18})();19const puppeteer = require('puppeteer');20const fs = require('fs');21(async () => {22 const browser = await puppeteer.launch();23 const page = await browser.newPage();24 await page.screenshot({path: 'screenshot.jpeg'});25 await browser.close();26})();
Using AI Code Generation
1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 const client = await page.target().createCDPSession();6 await client.send('Network.enable');7 await client.send('Network.setCacheDisabled', { cacheDisabled: true });8 await page.screenshot({path: 'google.png'});9 await browser.close();10})();11const puppeteer = require('puppeteer');12(async () => {13 const browser = await puppeteer.launch();14 const page = await browser.newPage();15 const client = await page.target().createCDPSession();16 await client.send('Network.enable');17 await client.send('Network.setCacheDisabled', { cacheDisabled: true });18 await page.screenshot({path: 'google.png'});19 await browser.close();20})();21const puppeteer = require('puppeteer');22(async () => {23 const browser = await puppeteer.launch();24 const page = await browser.newPage();25 const client = await page.target().createCDPSession();26 await client.send('Network.enable');27 await client.send('Network.setCacheDisabled', { cacheDisabled: true });28 await page.screenshot({path: 'google.png'});29 await browser.close();30})();31const puppeteer = require('puppeteer');32(async () => {33 const browser = await puppeteer.launch();34 const page = await browser.newPage();35 const client = await page.target().createCDPSession();36 await client.send('Network.enable');37 await client.send('Network.setCacheDisabled', { cacheDisabled: true });38 await page.screenshot({path: 'google.png'});39 await browser.close();40})();
Using AI Code Generation
1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch({headless: false});4 const page = await browser.newPage();5 const client = await page.target().createCDPSession();6 await client.send('Page.enable');7 await client.send('Page.setDownloadBehavior', {behavior: 'allow', downloadPath: '/home/username/Downloads'});8 await page.screenshot({path: 'google.png'});9 await browser.close();10})();11const puppeteer = require('puppeteer');12(async () => {13 const browser = await puppeteer.launch({headless: false});14 const page = await browser.newPage();15 const client = await page.target().createCDPSession();16 await client.send('Page.enable');17 await client.send('Page.setDownloadBehavior', {behavior: 'allow', downloadPath: '/home/username/Downloads'});18 await page.screenshot({path: 'google.png'});19 await browser.close();20})();21const puppeteer = require('puppeteer');22(async () => {23 const browser = await puppeteer.launch({headless: false});24 const page = await browser.newPage();25 const client = await page.target().createCDPSession();26 await client.send('Page.enable');27 await client.send('Page.setDownloadBehavior', {behavior: 'allow', downloadPath: '/home/username/Downloads'});28 await page.screenshot({path: 'google.png'});29 await browser.close();30})();31const puppeteer = require('puppeteer');32(async () => {33 const browser = await puppeteer.launch({headless: false});34 const page = await browser.newPage();
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