Handle cookies in request interceptor when cors request was happened

Steps to reproduce

Tell us about your environment:

• Puppeteer version: 1.15.0
• Platform / OS version: OSX 10.14.4
• Node.js version: 10.4.1

What steps will reproduce the problem? Try run next code:

        await page.goto('http://localhost:3000');
        await page.setRequestInterception(true);

        await page.setCookie({name: 'userId', value: 'my-user-id'});

        page.on('request', interceptedRequest => {
            if (interceptedRequest.url().endsWith('/some-api')) { //send cors request to localhost:8080/some-api
                const cookie = interceptedRequest.headers()['Cookie']; //undefined
                expect(cookie).toContain('userId'); //wrong, because cookie header is undefined
                interceptedRequest.continue();
            }
        });

With next puppeteer configuration:

    launch: {
        dumpio: process.env.HEADLESS === 'false',
        headless: process.env.HEADLESS !== 'false',
        slowMo: 20,
        args: [
            '--disable-web-security',
            '--disable-features=IsolateOrigins,site-per-process',
            '--disable-site-isolation-trials'
        ]
    }

1. Run code above
2. Cookie is always empty

What is the expected result? Expect that cookie should contain in request headers

What happens instead? Cookie header is undefined

[evanrolfe]

@lavcraft I’m currently using a work-around for this bug by storing the cookies from the page in a variable like this:

const cookies = page.cookies().map((cookie) => { return `${cookie.name}=${cookie.value}`; }).join('; ');

You can then use them in with the intercepted request i.e.

page.on('request', interceptedRequest => {
  const headers = interceptedRequest.headers();
  headers.cookie = cookies;
  
  console.log(headers);

  interceptedRequest.continue();
});

[linthertoss]

Can’t seem to get cookies from interceptedRequest.headers(); But if you want to get all cookies from page, So you can:

page._client.send('Network.getAllCookies')

It return all cookies from your page