C#•11mo ago

✅ How do I abort a long running API request manually?

Hi, I'm having a bit of trouble simply cancelling a long running request on a separate ASP.Net Web API.

I've intergrated the CancellationToken into my endpoint to handle it properly when it's fired from the browser (when the back button is pressed or window is closed)

public async Task<IActionResult> RunPowershellScriptFile(string workingDirectory, string scriptPath, CancellationToken cancellationToken = default)
{
  //...
}

public async Task<IActionResult> RunPowershellScriptFile(string workingDirectory, string scriptPath, CancellationToken cancellationToken = default)
{
  //...
}

public async Task<IActionResult> RunPowershellScriptFile(string workingDirectory, string scriptPath, CancellationToken cancellationToken = default)
{
  //...
}

public async Task<IActionResult> RunPowershellScriptFile(string workingDirectory, string scriptPath, CancellationToken cancellationToken = default)
{
  //...
}

The browser magically sends this cancellation token to my endpoint if the browser is closed or something. This works great.

How I do this manually? Like if I want a button the user can press on the front-end to cancel the process on the back-end.

I've been looking at this :

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

but that's JavaScript of course and I'm not sure how to integrate that.

Thanks!

MDN Web Docs

AbortController: abort() method - Web APIs | MDN

The abort() method of the AbortController interface aborts an asynchronous operation before it has completed.
This is able to abort fetch requests, the consumption of any response bodies, or streams.

✅ How do I abort a long running API request manually?

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