public void Open()
{
ConcurrentQueue <object> enqueuedMessages;
lock (_lock)
{
_isOpen = true;
enqueuedMessages = _enqueuedMessages;
_enqueuedMessages = new ConcurrentQueue <object>();
foreach (var m in enqueuedMessages)
{
var envelope = m as Envelope;
if (envelope != null)
{
_mailbox.Enqueue(envelope);
}
else
{
_mailbox.EnqueueSystemMessage((SystemMessageEnvelope)m);
}
}
}
}