[Zope] The proxy server received an invalid response from an upstream server.
dieter at handshake.de
Sun Dec 14 02:44:01 EST 2008
rugbert wrote at 2008-12-12 09:33 -0800:
>My client's zope has two back ends, /manage and /tools. tools is the one with
>the more user friendly interface and manage is the utilitarian one.
>When users goto /tools tho, and click the "assets" folder the site times
>outs with this:
>The proxy server received an invalid response from an upstream server.
>The proxy server could not handle the request GET /tools/assets/.
>Reason: Error reading from remote server
This error usually means that Zope has died (in some Zope versions,
it could also have a different cause: too large requests on which
Zope responded in violation of the HTTP specification by just closing
In normal operation, Zope is automatically restarted after it has died.
Thus, it may not be trivial to determine whether this happened.
* look into your Zope logfile.
If set up properly, it contains log entries which indicate
* start Zope in the foreground (on *nix: "bin/zopectl fg")
Then Zope is not automatically restarted on death but
must be manually restarted.
Once you know whether a restart really happens, you can try
to find the causes. For this, knowledge of your operating system
would be necessary.
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