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From Jim Jagielski <>
Subject Re: Proxying OPTIONS *
Date Wed, 03 Oct 2007 12:03:31 GMT

On Oct 2, 2007, at 5:56 PM, Ruediger Pluem wrote:

> Slightly off topic, but this gives me the idea that we could use
> OPTIONS * as some kind of ping / health check for pooled connections
> in mod_proxy_http before sending a request (at least in the reverse
> proxy case before sending a request that is not idempotent or after
> the connection has not been used for a certain amount of time).
> The current is_connected check has a race condition if the keepalive
> timer of the backend server kills the connection just after our check
> and before it received our request.


We already do similar with AJP where, right after  
it does a quick check. I think we even discussed having HTTP do  
similar awhile ago...

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