How to intercept all http responses in flutter?

Question

Is there any possible way to intercept all the network responses ? For example with electron js, I can do something like,

protocol.interceptBufferProtocol("http", (request, result) => {
  if (request.url === "http://www.example.com/encryptedkey")
     const decypted = decrypt(result)
     return result(decrypted)
});

Once I add the above code, no matter who ( webview / a 3rd party library , or any thing in the electron app ) sends the requests to the http://www.example.com/encryptedkey the response receive to the client code is not the same response sent from the server. It is manipulated by above electron code. Is there any possible way to achieve this with a flutter app ? I searched on Google and found this library But this won't work as I don't have control with some of the http request as they sends by 3rd party widget I use in the app.

Therefore I'm looking for a way to create some kind of proxy in between the server and flutter app.

Is this possible with flutter ? Any help regarding this really appreciate.