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    <p>What you want is in the wsgi <a href="http://www.python.org/dev/peps/pep-0333/#environ-variables" rel="nofollow noreferrer">environ</a>, specifically <code>environ['REMOTE_ADDR']</code>. </p> <p>However, if there is a proxy involved, then <code>REMOTE_ADDR</code> will be the address of the proxy, and the client address will be included (most likely) in <code>HTTP_X_FORWARDED_FOR</code>. </p> <p>Here's a function that should do what you want, for most cases (all credit to <a href="https://stackoverflow.com/questions/4581789/how-do-i-get-user-ip-address-in-django/5976065#5976065">Sævar</a>):</p> <pre><code>def get_client_address(environ): try: return environ['HTTP_X_FORWARDED_FOR'].split(',')[-1].strip() except KeyError: return environ['REMOTE_ADDR'] </code></pre> <hr> <p>You can easily see what is included in the wsgi environ by writing a simple wsgi app and pointing a browser at it, for example:</p> <pre><code>from eventlet import wsgi import eventlet from pprint import pformat def show_env(env, start_response): start_response('200 OK', [('Content-Type', 'text/plain')]) return ['%s\r\n' % pformat(env)] wsgi.server(eventlet.listen(('', 8090)), show_env) </code></pre> <hr> <p>And combining the two ...</p> <pre><code>from eventlet import wsgi import eventlet from pprint import pformat def get_client_address(environ): try: return environ['HTTP_X_FORWARDED_FOR'].split(',')[-1].strip() except KeyError: return environ['REMOTE_ADDR'] def show_env(env, start_response): start_response('200 OK', [('Content-Type', 'text/plain')]) return ['%s\r\n\r\nClient Address: %s\r\n' % (pformat(env), get_client_address(env))] wsgi.server(eventlet.listen(('', 8090)), show_env) </code></pre>
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    1. COThanks Marty, it was in fact my next move to actually do as you suggested in your second snippet. Thanks also for pointing out the proxy information, if I had put a load balancer in front, this would surely have caused some confusion. Having looked at the WSGI spec [link](http://www.python.org/dev/peps/pep-0333/#environ-variables), I see that REMOTE_ADDR is not a required variable, which was probably the source of my confusion!
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      1. USMichael Halls-Moore
 

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