I have a requirement to make some Tomcat pages available through an AOLServer host. I would like to do this by mapping a part of the url space on the AOLserver to Tomcat. e.g
http://foo.bar.com/some/page/index.html goes to /some/page/index.html on the AOLServer
but
http://foo.bar.com/some/other/page/index.html goes to http://foo.bar.com:8080/page/index.html which is Tomcat.
In other words anything below /some/other goes to the tomcat server on port 8080 using AOLS as a reverse proxy otherwise the request is handled by AOLS. I believe this can be done with virtual hosting but I can't find any examples of how to set it up. If its possible could someone give me a few pointers. If there is a better way knowledge of that would also be appreciated.
You can do this with non-standard ns_register_proxy command which exposes functionality already existing in nsvhr module. Try my patched nsvh2 from:
http://www.zjednoczenie.com/upload/aolserver/nsvhr2.tgz
When you compile and load nsvhr2.so you should put into library *.tcl file something like this:
# note that your page /some/other/page/index.html will be served # from http://foo.bar.com:8080/some/other/page/index.html # not http://foo.bar.com:8080/page/index.html
foreach method [list GET HEAD POST] {
ns_register_proxy $method /some/other/page/index.html \
http://foo.bar.com:8080
}ns_register_proxy syntax is the same as ns_register_proc
I you want even more stuff like this, serach for my posts to the list. Some time ago I had sent to the list a proposal to add such functionality to AOLserver core (along with my single server virtual host extention patch and test cases), but it was ignored by a core team.
Recently I've put nsvhr in production enviroment and there are problems with pages served from proxied Apache. I've never seen any problem with proxing AOLserver though. So be carefull, because I'm not sure if nsvhr is really well tested module. Maybe you should use Apache with its ProxyPass directive as frontend server and AOLserver as backend or even something like squid or ?ponds? which was also discussed on this list.
--tkosiak
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