I'm looking for a chrome or firefox extension that would allow me to remove certain request headers from all requests to a certain server.
Specifically, I'm trying to disable the browser from sending keep-alive headers.
In firefox there are configs you can to turn off the keep alive.
For sake of completeness:
If you want to do this per-server, you can write a few lines of code that will do it in Fiddler (CustomRules.js). It's not a Firefox addon, it's a standalone executable which acts like a proxy.
However there are some disadvantages: