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The proxy server received an invalid response from an upstream server

Posted on 2009-07-08
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In mod_proxy application some times i am getting the  proxy server received an invalid response from an upstream server error page , what are the causes for proxy server error.

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Question by:rohitskapoor
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samri earned 500 total points
ID: 24810587
hi Rohit,

The error could be caused by many things.  Generally, if the upstream proxy does not like the request that was forwarded (client --> your proxy --> upstream), by your proxy to the upstream, then there response code (from the upstream) may give some clue on what could be the possibilities.

Is this error persistent for a specific URL, or is is intermittent. ?

If you bypass your proxy, and connect direct to the upstream? are you getting this error?

What is the error code?

Your proxy server software/version, and upstream proxy server/version? if this is not too confidential.
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