Should I use one single CancellationToken for multiple methods?-CodePudding

Here is some of my code:

    var tokenSource = new CancellationTokenSource();
    tokenSource.CancelAfter(TimeSpan.FromSeconds(30));
    
    response = await client.GetAsync(url, HttpCompletionOption.ResponseHeadersRead, tokenSource.Token);
    response.EnsureSuccessStatusCode();

    using (var readStream = await response.Content.ReadAsStreamAsync())
    {
        var buffer = new byte[4096];
        var length = 0;
        while ((length = await readStream.ReadAsync(buffer, 0, buffer.Length, tokenSource.Token)) != 0)
        {
            //...
            if (waitTime)
                await Task.Delay(waitTime, tokenSource.Token);
        }
    }

Can I use the CancellationToken like that? Or is that the correct way to write it?

CodePudding user response：

Yes, it's normal to create a token source once and then have a tree of methods take the token and use it for cancellation.