By content I meant content that's being posted by the end user using HttpPost. I need to look at that content to determine where that request should go. So for eg: if a user fills the form and posts it I need to look at the posted content to do the switching.
On Mon, Jul 14, 2008 at 2:45 PM, André Warnier <[EMAIL PROTECTED]> wrote: > Mohit Anchlia wrote: > [...] > > We have a web server that redirects traffic to app server using mod_jk >>> load >>> balancer. >>> >>> Now I need to do the following: >>> >>> 1. If request comes from URL /AB and content of URL /AB has content in >>> certain format then forward it to mod_jk otherwise forward it to some >>> other >>> URL (external system in our case). >>> >> > I may be late with this answer, but for the first part above, you may be > interested to know that there is an alternative to the "JkMount" directives, > like this : > > <LocationMatch "/AB"> > SetHandler jakarta-servlet > SetEnvIf REQUEST_URI "\.(htm|web|css|gif|jpg|js|html?)$" no-jk > ... > > </LocationMatch> > > It's a bit harder to find in the documentation, but it means this : > - the <LocationMatch> allows you to match the URI with a regular expression > "a la perl". It has the same effect as <Location>, but is a bit more > flexible as to what you can match. > - "SetHandler jakarta-servlet" does basically the same as "JkMount", for > the <Location> in which it is included. > - SetEnvIf (requires the "mod_setenvif" standard Apache module) allows you > (between other things) to set/unset variables based on requests > characteristics (such as here whether the request URI is for one of the file > extensions indicated). > - and finally, using this to set the "no-jk" variable has the effect (if > the URI matches), to *not* re-direct this request through mod_jk. > > All of this together means that : > - if the URI matches /AB, it would normally be re-directed through mod_jk > and it's load balancer, to the back-end systems > - but, if the request matches the "SetEnvIf", then the no-jk variable will > be set > - thus, when mod_jk receives the request, it will "decline" it (give it > back to Apache saying "it's not for me") > - thus Apache will apply to this request any other directives present in > the same <Location> section (represented here by "...", but which could be > mod_perl handlers etc..) > > Does this give you new ideas ? > > (You might also want to look up the "JkUnMount" directive.) > > Now, let me comment on the way you phrase your request : > >> If request comes from URL /AB and content of URL /AB has content in > >> certain format then ... > (you would like it to go there, else somewhere else) > > There is a bit of a problem here, if taken literally. The problem is that > in order to know the format of the content, this content must be generated. > To generate it, you have to decide which process will generate it, and let > it do it. Then based on the content, you want to decide who generates it. > A bit of a chicken-and-egg problem here, no ? > Or by "content" do you just mean the file extension, as it appears in the > URI ? > > > André > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: [EMAIL PROTECTED] > " from the digest: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
