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Editorial Team
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Asked: 2026-05-26T08:28:00+00:00

I’d like to get the hostname in Google App Engine when running dev_appserver.py, because

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I’d like to get the hostname in Google App Engine when running dev_appserver.py, because GAE is making a request of an external server and that server needs to know where to send its response.

Unfortunately, the canonical Python way doesn’t seem to work, being:

import socket
socket.gethostbyname(socket.gethostname())

The socket library doesn’t work in GAE.

Also, 

os.environ['HTTP_HOST'] 
os.environ['SERVER_NAME']

Are both localhost.

How could one get the IP that an external server would connect to GAE?

Thanks for reading

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1 Answer

  1. Editorial Team

    the socket package might be disabled in the GAE sandbox.

    Have you tried using the request object to determine this?
    http://docs.webob.org/en/latest/reference.html#id1

    might be the most reliable way.

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