// This method will not catch exceptions so the BackgroundThread base class will receive them,
// raise a "Failure" and trigger a reconnect.
protected override void ThreadWorker(CancellationToken cancellationToken)
{
try
{
Debug.Assert(_context.Transport != null, "_context.Transport != null");
ITransport transport = _context.Transport;
// Iterate over all queued items (will block if the queue is empty)
foreach (QueueItem queueItem in _queue.GetConsumingEnumerable(cancellationToken))
{
IOutgoingMessage <IOutgoingMessageType> message = queueItem.Message;
IOutgoingMessageType messageType = queueItem.MessageType;
if (_logger.IsEnabled(LogLevel.Debug))
{
string?parametersOverview = message.GetParametersOverview();
_logger.LogDebug("Sending {messageName} message ({parameters})...", messageType.Name, parametersOverview ?? "no parameters");
}
try
{
// Write message to transport stream
messageType.WriteToTransport(message, transport, cancellationToken);
queueItem.CompletionSource?.SetResult(null);
}
catch (Exception ex)
{
// If something went wrong during sending, tell the waiting tasks about it (so for example the GUI doesn't wait forever).
queueItem.CompletionSource?.TrySetException(ex);
// Send-thread should still fail
throw;
}
}
}
catch
{
// When the loop was canceled or failed, cancel all remaining queue items
SetQueueCancelled();
throw;
}
}
public QueueItem(IOutgoingMessage <IOutgoingMessageType> message, IOutgoingMessageType messageType, TaskCompletionSource <object?>?completionSource = null)
{
Message = message;
MessageType = messageType;
CompletionSource = completionSource;
}
