using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace Ips.Library.Basic
{
    public static class CancellationTokenExtensions
    {
        public static CancellationToken LinkTimeout(this CancellationToken token, int timeout)
        {
            if (timeout <= 0) return token;
            var cts = new CancellationTokenSource();
            cts.CancelAfter(timeout * 1000);
            var timeoutToken = cts.Token;
            var linkedCts = CancellationTokenSource.CreateLinkedTokenSource(timeoutToken, token);
            return linkedCts.Token;
        }
    }
}