Troubleshooting Python Requests Through a Proxy

Feb 3, 2024 ยท 2 min read

When sending requests from Python code through a proxy server, you may occasionally run into issues where the request fails or you get errors. Here are some common problems and solutions:

Verify the Proxy URL

Double check that the proxy URL you are using is correct and the proxy server is running. A simple typo in the URL or the proxy being offline can cause connection failures:

proxies = {
  'http': 'http://user:pass@incorrectproxy.com:8080',
}

Authentication Required

Some proxies require authentication with a username and password. Make sure to include these in the proxy URL if needed:

proxies = {
  'http': 'http://user:password@proxy.com:8080'  
}

HTTPS Proxies

If you are sending HTTPS requests, you may need to use an HTTPS proxy instead of an HTTP proxy:

proxies = {
  'https': 'https://user:password@proxy.com:8080'
}

Proxy SSL Errors

If you get SSL certificate validation errors when using a proxy, you can disable SSL verification. But note that this reduces security:

requests.get(url, proxies=proxies, verify=False) 

Connection Timeouts

A proxy connection timing out could indicate network issues reaching the proxy. You can retry with a higher timeout value set:

requests.get(url, proxies=proxies, timeout=30)

The key is to isolate whether the issue is with the proxy itself or your code's proxy configuration. Trying without the proxy can help determine where the problem lies.

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