What actions does the HTTP client take if the token associated with the request is canceled?

If an HTTP client in C# (for example, HttpClient) is associated with a CancellationToken for a request, and this token is canceled before or during the execution of the request, the client aborts the request and throws an OperationCanceledException. This allows for proper handling of operation cancellation, such as stopping waiting for a response and freeing resources.

Example:

var cts = new CancellationTokenSource();
var client = new HttpClient();

var task = client.GetAsync("https://example.com", cts.Token);

// Cancel the request after some time
cts.Cancel();

try
{
    var response = await task;
}
catch (OperationCanceledException)
{
    Console.WriteLine("The request was canceled.");
}