/// <summary>
/// Stops th probe
/// </summary>
/// <param name="cancellationToken">A token to monitor for abort requests</param>
/// <returns>True if stopped successfully</returns>
public async Task <bool> StopAsync(CancellationToken cancellationToken)
{
var success = false;
if (!Task.IsCompleted)
{
using (await _control.LockAsync(cancellationToken).ConfigureAwait(false))
{
if (!Task.IsCompleted)
{
_continueProcessing = false;
try
{
if (_processingTask != null)
{
await _processingTask.ConfigureAwait(false);
_processingTask = null;
}
}
catch (Exception)
{
// Suppress exceptions while allowing the processing task to complete
}
}
try
{
if (_endpoint != null)
{
await _endpoint.StopAsync(cancellationToken).ConfigureAwait(false);
}
}
catch (Exception)
{
// Suppress exceptions with stopping the endpoint
}
_endpoint = null;
success = true;
}
}
return(success);
}
/// <summary>
/// Starts th probe
/// </summary>
/// <param name="cancellationToken">A token to monitor for abort requests</param>
/// <returns>True if started successfully</returns>
public async Task <bool> StartAsync(CancellationToken cancellationToken)
{
var success = false;
if (Task.IsCompleted)
{
using (await _control.LockAsync(cancellationToken).ConfigureAwait(false))
{
if (Task.IsCompleted)
{
if (_endpoint != null)
{
try
{
if (_processingTask == null)
{
await _processingTask.ConfigureAwait(false);
_processingTask = null;
}
}
catch (Exception)
{
// Suppress errors during cleanup
}
try
{
await _endpoint.StopAsync(cancellationToken).ConfigureAwait(false);
}
catch (Exception)
{
// Suppress errors to do with stopping the current listener
}
_endpoint = null;
}
try
{
if (_processingTask != null)
{
_continueProcessing = false;
await _processingTask.ConfigureAwait(false);
_processingTask = null;
}
}
catch (Exception)
{
// Suppress exceptions while letting the processor shutdown
}
_endpoint = new TcpProbeEndpoint(_address, _port, ProbeReceived, ProbeProcessed);
_processingTask = ProcessAsync();
success = true;
}
}
}
return(success);
}
