Thanks again for your valuable inputs, I am actually restricting number of HTTP sessions at weblogic layer, beyond the specified limit, weblogic throws 500 error message, which is not very useful to users, I want only the 500 error page to be re-written by Apache proxy with simple message (ex: server is busy, login after sometime), I want only 500 generic error message to re-write, I don't want to re-write any other content from back-end server.
Regards, Vel On Apr 18, 2017 00:19, "Luca Toscano" <toscano.l...@gmail.com> wrote: > Hi! > > As Nick mentioned there are a couple of options: > > 1) https://httpd.apache.org/docs/2.4/mod/mod_substitute.html or > https://httpd.apache.org/docs/current/mod/mod_proxy_html.html in case you > want to replace some parts of the response coming from the backend with > your content. > > 2) Write your own content output filter to modify the backend response as > you wish before flushing it out to the client. I'd suggest to follow > https://httpd.apache.org/docs/2.4/mod/mod_lua.html#modifying_buckets if > you want to attempt this road since using Lua instead of C is generally > easier for people not used to write Apache code. > > My personal suggestion is to not use any of the above but to re-think > about why you want to force the proxy to do this work. A proxy should be as > lightweight as possible and ideally should mask backend failures with > pre-defined error pages. > > Hope that helps! > > Luca > > 2017-04-17 9:57 GMT+02:00 Velmurugan Dhakshnamoorthy <dvel....@gmail.com>: > >> Hi Nick, >> yes exactly, I want the error message produced by back-end weblogic >> server to be re-written by Apache proxy and then display custom message to >> user. >> >> Regards, >> Vel >> >> >> On Apr 17, 2017 15:34, "Nick Kew" <n...@apache.org> wrote: >> >> On Mon, 2017-04-17 at 09:04 +0800, Velmurugan Dhakshnamoorthy wrote: >> >> > >> > Thanks Luca, I tried setting proxyerroroverride and error >> > document in virtual host, however, the 500 error produced by >> > content server is displayed as it is via Apache proxy. Any >> > further help? >> >> Are you saying you want an error message coming from the backend >> but modified by the proxy? That would imply using a content filter >> (such as mod_proxy_html, mod_sed, or mod_substitute) to rewrite >> the response from the backend. >> >> -- >> Nick Kew >> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org >> For additional commands, e-mail: users-h...@httpd.apache.org >> >> >> >
