Support browser contexts to launch different sessions

[ring04h]

puppeteer/puppeteer#85

add to Line 110
https://github.com/miyakogi/pyppeteer/blob/dev/pyppeteer/browser.py#L110

async def newIncognitoPage(self) -> Page:
    """Make new incognito page on this browser and return its object."""
    browserContextId = (await self._connection.send(
        'Target.createBrowserContext', {})).get('browserContextId')
    targetId = (await self._connection.send(
        'Target.createTarget',
        {'url': 'about:blank', 'browserContextId': browserContextId})).get('targetId')
    target = self._targets.get(targetId)
    if target is None:
        raise BrowserError('Failed to create target for page.')
    if not await target._initializedPromise:
        raise BrowserError('Failed to create target for page.')
    page = await target.page()
    if page is None:
        raise BrowserError('Failed to create page.')
    return page, browserContextId

[ring04h]

test case, Judging by the returned cookies of 2 requests

import asyncio
from pyppeteer import launch
from pyppeteer.launcher import connect


async def main():
    browser = await connect({'browserWSEndpoint': "ws://127.0.0.1:9222/devtools/browser/622533f4-7515-49d1-83b4-40f1780f4345"})
    page, browserContextId = await browser.newIncognitoPage()
    await page.goto('http://www.baidu.com')
    cookies = await page.cookies()
    print(cookies)

    await page.close()

    if browser._connection:
        await browser._connection.send('Target.disposeBrowserContext', {
            'browserContextId': browserContextId
        })

    await browser.disconnect()

asyncio.get_event_loop().run_until_complete(main())

[ring04h]

await page.close() , need to release BrowserContext
'Target.disposeBrowserContext', {browserContextId: page.browserContextId}

[rodjun]

puppeteer/puppeteer#85 Has been fixed in PR puppeteer/puppeteer#2523, i guess incognito pages can be added in a clean way now

[topul]

When will it be updated

[rodjun]

Not sure, but for now I'm doing this: (BEWARE: It breaks things like setting timeout or anything else that you try to set, it's hacky and if you put this is code that other people will have to use they will kill you and your family)

    browser = await launch()
    
    async def newIncognitoPage(self):
        """Make new page on this browser and return its object."""
        browserContextId = (await self._connection.send(
            'Target.createBrowserContext', {})).get('browserContextId')
        targetId = (await self._connection.send(
            'Target.createTarget',
            {'url': 'about:blank', 'browserContextId': browserContextId})).get('targetId')
        target = self._targets.get(targetId)
        if target is None:
            raise BrowserError('Failed to create target for page.')
        if not await target._initializedPromise:
            raise BrowserError('Failed to create target for page.')
        page = await target.page()
        if page is None:
            raise BrowserError('Failed to create page.')
        return page
    
    
    browser.newIncognitoPage = types.MethodType(newIncognitoPage, browser)```