Hello, Apache has been configured as a proxy server. Here are the directives from my Apache config file:
LoadModule perl_module modules/mod_perl.so PerlModule Apache2 PerlModule iProxy::ContentFilter PerlModule iProxy::RequestFilter ProxyRequests On ProxyRemote * http://corporate_proxy_server:8080 PerlInputFilterHandler iProxy::RequestFilter <Proxy *> Order Allow,Deny Allow from all PerlOutputFilterHandler iProxy::ContentFilter </Proxy> Essentially, Apache 2 is doing the proxying. It is also filtering all requests through iProxy::RequestFilter and all responses through iProxy::ContentFilter. --- Regards, Chris Pringle UK PSG Hewlett-Packard, Bristol Tel: 0117 31 29664 Mob: 07752 307063 > -----Original Message----- > From: Aleksandr Guidrevitch [mailto:[EMAIL PROTECTED] > Sent: 02 October 2003 13:51 > To: Pringle, Chris (HP-PSG) > Subject: Re: [QUESTION] Relating a request to a response > > > Hello, Chris > > Basically more details are needed, especially, I wonder HOW > do you proxy > the request ? Which mod_perl method do you use to pass the > query to the > underlaying web server or may be you go with libwww-perl to fetch the > page ? > > May be you have a code snippet which you need to behave > correctly ? I mean I need current implementation details > > Sincerely, > Aleksandr Guidrevitch > > > Pringle, Chris (HP-PSG) wrote: > > I'm currently working on a project to transform web content. It's > > basically a proxy server that has some Mod_Perl filters loaded to > > perform the transformations. > > > > Below is a diagram that shows how the requests are being passed from > > client to web server. > > > > CLIENT <-----> | TRANSFORMING PROXY | <-------> CORPORATE PROXY > > <------> WEB SERVER > > | | > > | --> REQUEST FILTER --> | > > |<-- RESPONSE FILTER <-- | > > | | > > > > > > Heres the problem: > > I need to give the web users an option to turn off the > transformations > > for a session, effectivly giving them the original > untransformed web > > page. The filter must be controllable on a per page and per > user basis. > > I.e. every user can control what pages they would like > transformed (by > > default they will be transformed). It does not matter if > they have to > > turn the filter off every time they visit the page. > > > > Initially I tried appending "&iProxy=OFF" to the query string. That > > way, > > when the filter received the response, it could see from > the URI that > > the page should not be transformed. However, adding this to > the query > > string is causing problems with some web servers. > > > > What I would now like to do is strip off the "&iProxy=OFF" from the > > URI > > before forwarding the request on to the corporate proxy. > However, I've > > then no way of detecting whether the content should be > filtered when I > > get the response. Is there any way I can set a flag in the filter > > context of the request filter that can be read by the > response filter? > > i.e. Is there anyway for the two filters to pass a flag? > From my limited > > knowlegde of Mod Perl filters, I think that the response > and requests > > filters have different filter contexts, therefore making it > impossible > > for the two filters to share data using a filter context. > > > > If there is no way of passing a flag between the two, does > anyone know > > of an HTTP header that is copied from a request and placed into a > > response when the request is processed? For example, if I > set a header > > in the request, I would want the same header (unmodified) > to be returned > > in the response. This way, I can recognise content that mustn't be > > transformed when I get the response back. > > > > E.g. > > > > REQUEST: > > GET _http://aserver.com/index.php_ HTTP/1.1\n > > Host: aserver.com > > MyHeader: iProxyOFF\n > > \n\n > > > > > > RESPONSE: > > HTTP/1.1 200 OK\n > > Server: Apache/1.3.23 (Unix)\n > > Connection: close\n > > MyHeader: iProxyOFF\n > > \n > > 365 > > Bla bla bla bla > > > > > > Any other ideas to recognise pages that should not be transfomred > > would > > be appreciated! > > > > Sorry this is a bit long and possibly confusing! > > > > --- > > *Regards,* > > *Chris Pringle* > > > > /UK PSG/ > > /Hewlett-Packard, Bristol/ > > /Tel: 0117 31 29664/ > > /Mob: 07752 307063/ > > > > >
