Protractor: how to analyze all incoming and outgoing HTTP traffic

I work on a test case with javascript and protractor.On site is an analysis tool in use, which integrates a pixel to the page and tracks the user behaviour. I try all requests of a web page to intercept and read out the url.

I tried to use a proxy to log alle request, but this did not work. does anybody know how to get the outgoing http get-requests?