Except that I have 5 servers, each having 20 different apps, some of which are 3'rd party, so I *really* don't want to modify the app (closed source).
This is a server infrastructure and configuration issue, none of which any developer should ever be worried about... Regards Johan On Mon, 2006-07-17 at 11:48 +0200, Ronald Klop wrote: > On Sat Jul 15 13:38:47 CEST 2006 Tomcat Users List <users@tomcat.apache.org> > wrote: > > Hi > > > > We needed to patch Tomcat for our site that has a Tomcat > > behind Apache (mod_jk), that sits behind a reverse proxy load balancer. > > The idea is basically to not use the TCP endpoint of Apache (which will > > always point to the reverse proxy) to give the caller of > > request.getRemoteAddr a valid IP, but rather retrieve it from a > > configurable request header. In our case, we have hacked the Pound > > loadbalancer to forward a request header called X-Pounded-For with each > > request, and the value of this header is then used (if available) to > > return the *real client IP to the caller of request.getRemoteAddr or > > request.getRemoteHost. > > > > Extract from server.xml: > > > > <!-- Define an AJP 1.3 Connector on port 8009 --> > > <Connector port="8009" proxyRemoteAddrHeader="X-Pounded-For" > > enableLookups="false" redirectPort="8443" protocol="AJP/1.3" /> > > > > > > Let me know if it is of any use to anyone else! > > > > Regards > > > > -- > > Johan van den Berg > > Technical Webmaster > > University of South Africa > > > > Cel: +27 73 201 3520 > > Tel: +27 12 429 2371 > > > > Registered Linux user number 390606 > > http://counter.li.org/ > > --------------------------------------------------------------------- > > To start a new topic, e-mail: users@tomcat.apache.org > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED], > > In stead of patching Tomcat, you can also make a util class/method like this. > > public final class ServletUtils { > private static final String MY_TRUSTED_PROXY = "127.0.0.1"; > public static String getRemoteAddr(ServletRequest req) { > String remoteIp = req.getRemoteAddr(); > if (remoteIp.equals(MY_TRUSTED_PROXY)) { > String proxyIp = req.getHeader("X-Pounded-For"); > if (proxyip != null) { > remoteIp = proxyip; > } > } > return remoteIp; > } > } > > > This makes your application know about your setup in stead of Tomcat. Much > more flexible and much less problems when upgrading Tomcat. > You can also put this in a Filter which wraps the ServletRequest with your > own version. This keeps your application clean and it just uses the standard > Servlet extendabilties. > > Ronald. > --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
