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From "Lacroix, Scott" <slacr...@tycoint.com>
Subject [users@httpd] Question about ProxyPass / Reverse Proxy
Date Fri, 03 Feb 2017 15:30:51 GMT
Hello All,

My apologies if this has been asked before, but I have done extensive Googling and I can't
find it if it has!

What we're doing is using a Reverse Proxy setup to redirect a local request to another local
URL:

ProxyPass /path/morePath/info http://localhost:7000/morePath/info retry=0 ttl=10
ProxyPass /path/morePath ws://localhost:7000/morePath retry=0 ttl=10
ProxyPass /path/ http://localhost:7000/ retry=0 ttl=10

That works MOST of the time. The problem we're seeing is this: If we try to pre-configure
a system that is set up for DHCP but has no network connection (pre-configuring on a bench)
and thus no IP address, we're having trouble with the redirect. BUT if I change the above
to the following:

ProxyPass /path/morePath/info http://0.0.0.0:7000/morePath/info retry=0 ttl=10
ProxyPass /path/morePath ws://0.0.0.0:7000/morePath retry=0 ttl=10
ProxyPass /path/ http://0.0.0.0:7000/ retry=0 ttl=10

Then it works fine.

So my question is: what's the difference here? What exactly does mod_proxy do with the address
0.0.0.0, and why doesn't "localhost" work?

Thanks for whatever help you can give!

Scott LaCroix
Software Engineer | JCI / Tyco Safety Products
O: 978.577.4057<tel:603.669.4355> | F: 978.577.4392<mailto:978.577.4392> | slacroix@tycoint.com<mailto:slacroix@tycoint.com>


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