This demonstrates how to run Browsermob proxy and have it filter requests and rewrite a URL.
For example, it will change requests from http://foo.example.com/foo.html to http://bar.example.com/bar.html
To use browsermob with Sauce Connect see the following documentation: https://wiki.saucelabs.com/display/DOCS/Sauce+Connect+Proxy+with+an+Additional+Proxy+Setup
or just run sauce connect and browsermob (on the same host) like this:
sc --proxy localhost:55555
Note that the default port for browsermob proxy is random, but in my example is set to 55555.
You can also use a PAC file to specify when to use browsermob proxy:
sc --pac file://$(pwd)/browsermob.js
(see the included browsermob.js file. You may need to change the port if you are not using 55555.)