At work we have systems which have been hard coded with "application/x-java-applet;jpi-version=1.4.2_12" and other versions on different systems. In windows this is ok as you can have multiple versions of java running on the same system.

However in firefox on linux you can only have one version of java plugin at one time. It's easy enough to fool the system by adding extra jpi versions to the plugin.dat file. however it only picks up the last jpi version to do the check. So if I try to access to systems with different jpi versions it won't go.

So I was wondering if it's possible to set up squid to do a global replace on the string "application/x-java-applet;jpi-version=x.x.x" that way all the systems coming in are of the same jpi version.

I know it would be easier to just change the jpi hardcode but I don't have access to those systems nor will the sys admins change it for me.

So if I can get squid to fool the system it would be great.

Your request is rather incoherent in that you appear to be mixing up client functions and server functions freely, but what I get from it is that you want to change outgoing and incoming HTTP headers and you are asking if squid will do this.

That isn't squid's purpose, and I honestly don't know if it will do it though I suspect it can.

However, changing/blocking headers IS the job of privoxy and it'll do everything you want - and it probably will be a bit easier to set up than squid will be.

Sorry didn't realize my explanation wasn't clear.


inside the start page for our application is <EMBED> and <OBJECT> tags. They have a hard coded java version as one of the Parameter tags inside the webpage.

So I was wondering if I could configure squid to intercept the html text, grep/sed it, and serve it to firefox. That way I can modify the java version parameter in the page.