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From Graham Leggett <>
Subject Re: mod_proxy handling of error returns from scheme handlers
Date Fri, 08 Apr 2005 18:40:27 GMT
Rici Lake wrote:

> Just a query: I was looking at the code for mod_proxy.c and I wonder if 
> the behaviour is really correct.
> At line 632, it loops through the configured proxy hosts, trying 
> proxy_run_scheme_handler on each one. If it receives any return code 
> other than DECLINED or HTTP_BAD_GATEWAY, it accepts the result.
> But then at line 656, having failed to find a proxy which will handle 
> the request, it tries the request directly. In this case, it retries on 
> any error return if max_attempts has not been reached. This would cause 
> a retry, for example, on an authentication required status return, which 
> seems odd.

In theory (if I understand it correctly) it wouldn't - because it would 
only try the direct connection on DECLINED or bad gateway - if 
authentication was denied, the result would be neither DECLINED nor bad 
gateway, and so the direct connection would never be tried in this case.


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