I would like to view (capture) the data sent by a client web browser (firefox 45.0.2, ubuntu OS), to any visited website, when following about:config settings are done.
I would like to view (capture) this data - with default setting as well as after changing the settings (user set)
Primary reason behind the question is - I would like to see what change in the data happens before and after the settings, when client browser sends data to any website.
Can anyone suggest me any tool that will help me to capture such data. I have tried using HttpFox, Firebug but not got any success.