Chrome Extension - How to get HTTP Response Body?

Question

It seems to be difficult problem (or impossible??). I want to get and read HTTP Response, caused by HTTP Request in browser, under watching Chrome Extension background scrip

Answer 1

There is now a way in a Chrome Developer Tools extension, and sample code can be seen here: blog post.

In short, here is an adaptation of his sample code:

chrome.devtools.network.onRequestFinished.addListener(request => {
  request.getContent((body) => {
    if (request.request && request.request.url) {
      if (request.request.url.includes('facebook.com')) {

         //continue with custom code
         var bodyObj = JSON.parse(body);//etc.
      }
}
});
});