Python：在 pyppeteer 中保持打开浏览器并创建 CDPSession

Question

我有两个问题暂时无法解决。

1.我想让浏览器保持运行，这样我就可以使用pyppeteer.launcher.connect()函数重新连接，但即使我不调用它，它似乎也被关闭了pyppeteer.browser.Browser.close()。

测试01.py：

import asyncio

from pyppeteer import launch, connect

async def fetch():

    browser = await launch(

        headless=False,

        args=['--no-sandbox']

    )

    print(f'Endpoint: {browser.wsEndpoint}')

    await browser.disconnect()

loop = asyncio.get_event_loop()

loop.run_until_complete(fetch())

$ python test01.py

Endpoint: ws://127.0.0.1:51757/devtools/browser/00e917a9-c031-499a-a8ee-ca4090ebd3fe

$ curl -i -N -H "Connection: Upgrade" -H "Upgrade: websocket" http://127.0.0.1:51757

curl: (7) Failed to connect to 127.0.0.1 port 51757: Connection refused

2.如何创建 CDP 会话。此代码应该打开另一个浏览器窗口，但它没有按预期工作：

测试02.py

import asyncio

import time

from pyppeteer import launch, connect

async def fetch():

    browser = await launch(

        headless=False,

        args=['--no-sandbox']

    )

    page = await browser.newPage()

    cdp = await page.target.createCDPSession()

    await cdp.send('Target.createBrowserContext')

    time.sleep(5)

    await browser.disconnect()

loop = asyncio.get_event_loop()

loop.run_until_complete(fetch())

$ python test02.py

Future exception was never retrieved

future: <Future finished exception=NetworkError('Protocol error Target.sendMessageToTarget: Target closed.',)>

pyppeteer.errors.NetworkError: Protocol error Target.sendMessageToTarget: Target closed.