Is it possible to replicate the 'authorization' parameter found in the browser?

Is there a way to use JavaScript to retrieve the API 'Authorization' parameter, which contains the access token, from the Headers section of the Inspect Tools -> Network in Firefox? Alternatively, is it possible to save a log of network traffic and then scan the file with JavaScript to find the token? I am looking to automatically download this log daily so that I can review it. Have you ever implemented something like this before?

Answer №1

If you are working with the Fetch API, you have the ability to retrieve the headers of a response through its 'headers' read-only property. This 'headers' property contains the Headers object that holds all the non-forbidden headers in the response, including 'Authorization' if it has been specified. Below is a snippet of code demonstrating how you can log this information to the console:

fetch('https://www.example.com/api/v1/widgets')
.then((response) => {
  console.log(response.headers['Authorization'])
})

Answer №2

A handy trick for extracting data is to utilize the developer tool. By opening the developer tool and navigating to the "Network" tab, you can access all HTTP requests (simply refresh the page if it appears empty). From there, you have the option to select the request you desire and extract the necessary data from the header.

Copying the data follows a standard procedure similar to other programs - click on it, highlight your selection, then press ctrl-c (or cmd-c on Mac).

https://i.sstatic.net/BHH6g.png

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