How do I get the real server name in jsp, not the proxy's name

Question

I have following (simplified) setup.

From the client I call http://somedomain.com/my.jsp via the proxy it's forwarded to apache 1 or apache 2

In my jsp I want the server1-domain.com or server2-domain.com and not somedomain.com

request.getServerName() gives me somedomain.com in the header the 'Host' param is also somedomain.com

It seems similar but just the opposite to: tomcat-getheaderhost-vs-getservername

But I cannot turn of 'ProxyPreserveHost' as I am not the only one on the cluster... Optimal solution is not having to change anything to the domaincontroller/loadbalancer/apaches

Can I get it via just a JSP method/param?

Have you tried X-Forwarded headers, like X-Forwarded-For or X-Forwarded-Host? — andrucz, Dec 09 '15 at 12:57
Take a look at http://stackoverflow.com/questions/10407203/tomcat-getheaderhost-vs-getservername — andrucz, Dec 09 '15 at 13:21
Nope don't have the X-Forwarded headers.. I'm going to try this now: `String hostname = InetAddress.getLocalHost().getHostName();`. Looks promising in the the spring controller (tested locally). I'm still building and deploying on the clustered development environment.. — VDP, Dec 09 '15 at 13:36
@andrucz you linked to the same question I refer to in my question... :-) — VDP, Dec 09 '15 at 13:37

score 2 · Accepted Answer · answered Dec 09 '15 at 13:50

2

I ended up using this:

String hostname = InetAddress.getLocalHost().getHostName();

answered Dec 09 '15 at 13:50

VDP

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How do I get the real server name in jsp, not the proxy's name

1 Answers1