如何在onBeforeRequest中接收客户端的公共IP地址

Question

I would like to write an extension to block requests to a specific website according to the IP address. I've already written this code that blocks all requests related to *://*.google.com/* . My question is how can I block requests in onBeforeRequest based on the IP addresses?

var urls = [
    '*://*.google.com/*',
  ];

  var types = ['main_frame', 'sub_frame']
  
  var response = async function(d){
    return true
  };
  
  chrome.webRequest.onBeforeRequest.addListener(response, { urls: urls, types: types }, ['blocking'] );

Answer 1

This isn't possible. The documentation for onBeforeRequest shows that this isn't information that's available to an extension at this point.

This makes sense, however, as at this point in the lifecycle the browser most likely hasn't made any DNS queries for the IP address of the server at the domain - it simply wouldn't be able to know without making those queries.