Pyppeteer在20秒后通过pyppeteer.errors.NetworkError崩溃 [英] Pyppeteer crushes after 20 seconds with pyppeteer.errors.NetworkError

问题描述

在使用 pyppeteer 来控制Chromium的过程中，大约20秒后我收到了一个错误工作:

  pyppeteer.errors.NetworkError:协议错误(Runtime.callFunctionOn):会话关闭.该页面很可能已关闭. 

如此处所述所述，问题可能是由python 的实现引起的websockets> = 7 软件包及其在pyppeteer中的用法.

解决方案

有3种防止与Chromium断开连接的解决方案:

-修补类似此处所述的代码(首选):
在运行任何其他Pyppeteer命令之前运行该代码段

  def patch_pyppeteer():导入pyppeteer.connectionoriginal_method = pyppeteer.connection.websockets.client.connectdef new_method(* args，** kwargs):kwargs ['ping_interval'] =无kwargs ['ping_timeout'] =无返回original_method(* args，** kwargs)pyppeteer.connection.websockets.client.connect = new_methodpatch_pyppeteer() 

-更改麻烦的库 :
将 websockets 包降级为 websockets-6.0 ，例如通过 pip3 install websockets == 6.0 --force-reinstall (在您的虚拟环境中)

-更改代码库如 pull请求中所述，有望很快合并.

During usage of pyppeteer for controlling the Chromium I have been receiving an error approximately after 20 seconds of work:

pyppeteer.errors.NetworkError: Protocol Error (Runtime.callFunctionOn): Session closed. Most likely the page has been closed.

As described here the issue is probably caused by implementation of python websockets>=7 package and by its usage within pyppeteer.

解决方案

There are 3 solutions to prevent disconnection from Chromium:

- Patching the code like described here (preferable):
Run the snippet before running any other Pyppeteer commands

def patch_pyppeteer():
    import pyppeteer.connection
    original_method = pyppeteer.connection.websockets.client.connect

    def new_method(*args, **kwargs):
        kwargs['ping_interval'] = None
        kwargs['ping_timeout'] = None
        return original_method(*args, **kwargs)

    pyppeteer.connection.websockets.client.connect = new_method

patch_pyppeteer()

- Change the trouble making library:
Downgrade websockets package to websockets-6.0 e.g via pip3 install websockets==6.0 --force-reinstall (in your virtual environment)

- Change the code base as described in this pull request, which will be hopefully merged soon.

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