Patrick Lightbody, one of the core originators of Selenium and creator of Selenium RC with Paul Hammant, created the BrowserMob proxy while working on his startup BrowserMob. BrowserMob Proxy allows you to control the way that traffic is filtered to the browser.
We can also change the headers that are supplied to the server. This allows us to do a large number of things.
When working with BrowserMob Proxy we will need to make sure that we start the proxy so that we can use the API and change what we need.