CircuitBreaker.cs

    public static class CircuitBreakerExtensions
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="circuit">async work</param>
        /// <param name="timeout">it abandons the work if not finished until this timeout</param>
        /// <param name="finalTimeout">timeout for when the task runs for final time</param>
        /// <param name="tries">number of times to try the work</param>
        /// <param name="retryRemedy">after each unscuccessful retry, this will be called and the index will be passed</param>
        public static bool CircuitBreaker(this Func<Task> circuit, TimeSpan timeout, TimeSpan finalTimeout, int tries = 3, Action<int> retryRemedy = null)
        {
            tries = Math.Max(1, tries);
            var tried = 0;

            while (tried < tries)
            {
                // offload to another thread to prevent deadlock
                if (Task.Run(circuit).Wait(tried==tries-1 ? finalTimeout : timeout))
                    return true;

                if (retryRemedy != null)
                    retryRemedy(tried);
                
                tried++;

            }

            throw new TimeoutException("CircuitBreaker did not succeed");

        }
    }