What is the reason for 403 error when starting a browser using DrissionPage? How to solve it?

DrissionPage encountered 403 error when starting the browser: Cause and solution

When Python's DrissionPage module starts the browser, it may cause the browser to fail to start normally. This article will analyze this problem in depth and provide corresponding solutions.

Problem description

The user tries to run the following code:

 from draft page import chromiumpage
page = chromiumpage()

But I received a websocketbadstatusexception error, prompting handshake status 403 forbidden .

Error analysis

403 Forbidden error usually means that the server rejects the request. In this example, the error occurs during the process of establishing a WebSocket connection with the browser. Specifically in the start method of chromiumdriver class, the method calls the create_connection function to try to establish a connection, but the server returns a 403 status code, resulting in the WebSocket handshake failure.

Possible causes and solutions

1. Network Proxy Interference: Global Proxy settings may prevent DrissionPage from accessing localhost or 127.0.0.1 . DrissionPage needs to communicate with the browser through the local address, and proxy settings may interfere with this process.

   Solution: Disable global proxy, or exclude 127.0.0.1 and localhost from proxy settings. You can also explicitly disable the proxy in your code:

    from draft page import chromiumpage, chromiumoptions
   
   options = chromiumoptions()
   options.add_argument('--no-proxy-server')
   page = chromiumpage(options=options)

2. Browser version or configuration conflict: Some browser version or specific configuration may be incompatible with DrissionPage.

   Solution: Update the browser to the latest version and try different browser configuration files.

3. Insufficient permissions: The browser or related services may lack the necessary running permissions.

   Solution: Try running Python scripts with administrator privileges, or check browser installation and running permissions.

4. ChromeDriver version mismatch: ChromeDriver version does not match Chrome browser versions can also cause this error.

   Solution: Make sure the ChromeDriver version is compatible with the Chrome browser version. ChromeDriver matching your Chrome version can be downloaded from the official Chrome website.

5. Firewall or security software interception: Firewall or security software may block communication between DrissionPage and the browser.

   Solution: Temporarily close the firewall or security software to see if it can solve the problem. If the problem is solved, you need to add exception rules for DrissionPage and Chrome browser in your firewall or security software.

Debugging Tips

If the above method is invalid, you can enable detailed logging of DrissionPage to assist in debugging:

 import os
os.environ['DRISSIONPAGE_DEBUG'] = '1'

Then rerun the code and view detailed debugging information to locate the root cause of the problem.

With the above analysis and solutions, you should be able to resolve the 403 error encountered when DrissionPage launches your browser. If the problem persists, please refer to the official documentation of DrissionPage or the community for more help.

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