How can I just show cancel information when my task is cancelled?

Question

User-978659149 posted

This is my code :

private static void SendLoop()
{
    CancellationTokenSource source = new CancellationTokenSource();

    while (true)
    {
        Console.WriteLine("Enter a request: ");
        string req = Console.ReadLine();

        byte[] buffer = Encoding.ASCII.GetBytes(req);
        _clientSocket.Send(buffer,0,buffer.Length,SocketFlags.None);

        if (req != string.Empty)
        {
            var task = Task.Run(() =>
            {
                if(source.IsCancellationRequested != true)
                {
                    var receivedBuffer = new byte[2048];
                    int rec = _clientSocket.Receive(receivedBuffer, SocketFlags.None);

                    byte[] data = new byte[rec];
                    Array.Copy(receivedBuffer, data, rec);
                    Console.WriteLine("Received : " + Encoding.ASCII.GetString(data));
                }
                else
                {
                    source.Dispose();
                }
            },source.Token);


                if (task.Wait(TimeSpan.FromSeconds(10)))
                {
                    Console.WriteLine("Task end");
                }
                else
                {
                    Console.WriteLine("task cancel" + task.Status);
                    source.Cancel();
                    Console.WriteLine(source.IsCancellationRequested);
                    _clientSocket.Close();
                }
        }
    }
}

I want to modify my code to just have the cancel information and not a message if the task is completed because finally I will know that my task is completed if I receive the data from the server.

Do you have any idea how can I modify my code ?

Answer 1

User303363814 posted

Can you explain a little more?

As you have written the question the answer is just to delete the console.writeline statements that you do not want.  I can't believe that is all their is to your question!

Answer 2

User288213138 posted

Hi soleyne,

I want to modify my code to just have the cancel information and not a message if the task is completed because finally I will know that my task is completed if I receive the data from the server.

According to your description, I couldn’t understand your requirement clearly.

What is cancel information and message?

else
                {
                    source.Dispose();
                }

This is the code for task is cancelled, if you want to show cancel information, you can do something in it.

Best regards,

Sam

Answer 3

User-978659149 posted

I want to modify my code to don't have this part.

if (task.Wait(TimeSpan.FromSeconds(10)))
{
    Console.WriteLine("Task end");
}

Because if the task is not cancel we will already show the result thinks to this.

if(source.IsCancellationRequested != true)
{
    var receivedBuffer = new byte[2048];
    int rec = _clientSocket.Receive(receivedBuffer, SocketFlags.None);

    byte[] data = new byte[rec];
    Array.Copy(receivedBuffer, data, rec);
    Console.WriteLine("Received : " + Encoding.ASCII.GetString(data));
}

Answer 4

User-978659149 posted

I want to modify my code to don't have this part.

if (task.Wait(TimeSpan.FromSeconds(10)))
{
    Console.WriteLine("Task end");
}

Because if the task is not cancel we will already show the result thinks to this.

if(source.IsCancellationRequested != true)
{
    var receivedBuffer = new byte[2048];
    int rec = _clientSocket.Receive(receivedBuffer, SocketFlags.None);

    byte[] data = new byte[rec];
    Array.Copy(receivedBuffer, data, rec);
    Console.WriteLine("Received : " + Encoding.ASCII.GetString(data));
}

Answer 5

User303363814 posted

if (!task.Wait(TimeSpan.FromSeconds(10)))
{
 Console.WriteLine("task cancel" + task.Status);
 source.Cancel();
 Console.WriteLine(source.IsCancellationRequested);
 _clientSocket.Close(); 
}

Alternatitevly, you could delete the Console.WriteLine statement. Exactly the same