[ejk314]

You could always write a simple proxy in python and simply route all of your traffic through that.

See: http://voorloopnul.com/blog/a-python-proxy-in-less-than-100-...

[nirvdrum]

BrowserMob Proxy is the go-to tool for use with Selenium:

http://bmp.lightbody.net/

[fauigerzigerk]

That would add quite a lot of complexity to achieve something rather trivial.