AbortController instead of Promise.race when performing requests

[alexsyo]

Hi, I just wanted to suggest to use the Abort Controller instead of using Promise.race when performing any fetch, because this would stop the request instead of just ignoring the response (while keeping the promise processing).

https://developer.mozilla.org/en-US/docs/Web/API/AbortController

• reason for this is that it happened I had a few calls that hang out forever, freezing a server in a test I was doing

[aalmada]

AbortController is also supported by Axios: https://axios-http.com/docs/cancellation

[aalmada]

It would be great to be able to cancel a long-lasting request when its result is no longer needed.

As I mentioned above, axios supports this using the AbortController. Here's how it can be used: https://medium.datadriveninvestor.com/aborting-cancelling-requests-with-fetch-or-axios-db2e93825a36

AbortController is very similar to the CancellationTokenSource used in .NET.

I see that ethers uses ws which, unfortunately, doesn't seem to have any cancellation mechanism.