How to Accurately Obtain a User's IP Address in Django with Reverse Proxies?

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Release: 2024-11-05 08:08:02
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How to Accurately Obtain a User's IP Address in Django with Reverse Proxies?

Django: Obtaining User IP Address

Problem:

You encounter a KeyError when trying to retrieve the user's IP address using request.META['REMOTE_ADDR'].

Analysis:

The remote address returned by request.META['REMOTE_ADDR'] may not be the actual user IP if a reverse proxy is involved.

Solution:

To obtain the user's IP address accurately, follow these steps:

  1. Define a utility function to retrieve the client IP:
<code class="python">def get_client_ip(request):
    x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR')
    if x_forwarded_for:
        ip = x_forwarded_for.split(',')[0]
    else:
        ip = request.META.get('REMOTE_ADDR')
    return ip</code>
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  1. Replace your previous code with:
<code class="python">client_ip = get_client_ip(request)</code>
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Considerations:

  • Ensure your reverse proxy (e.g., mod_rpaf for Apache) is configured correctly.
  • Use the first item in X-Forwarded-For for most cases.
  • Caution: In certain setups (e.g., Heroku), you may need to use the last item instead.
  • To obtain the HttpRequest.META documentation in Django, refer to the official documentation.

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