/// <summary>
/// public method to watch the reader and notify when new messages are available
/// </summary>
async Task Pump()
{
_log.LogInformation("LDAP pump started");
// Need something to track if we should abandon existing tasks...etc.
while (!_isClosed)
{
//if (_raw.DataAvailable)
try
{
// Ensure we can safely read the contents
if (await _reader.ReadAsync())
{
// read the next operation available
var message = await _reader.ReadResponseAsync();
if (message != null)
{
_log.LogInformation("Message received {0}", message.Operation);
if (_size == 0) // new
{
_head.Message = message;
_tail = _head;
_size = 1;
}
else if (_size >= 16) // shouldn't hardcode the 16
{
_head = _head.Next;
_tail.Next = new MessagePumpNode {
Message = message, Next = null
};
_tail = _tail.Next;
}
else
{
_tail.Next = new MessagePumpNode {
Message = message, Next = null
};
_tail = _tail.Next;
_size++;
}
_event.Set();
}
}
}
catch (LDAPException ldapEx)
{
_log.LogError(ldapEx.ToString());
}
catch (Exception ex)
{
_log.LogError(ex.ToString());
}
// else
// {
// await Task.Delay(250);
// }
}
}
public MessagePumpEnumerator(MessagePumpNode node, EventWaitHandle evt, int messageId, CancellationToken token)
{
_node = node;
_event = evt;
_messageId = messageId;
_token = token;
}
/// <summary>
/// Default constructor
/// </summary>
/// <param name="reader">The reader to pump messages from</param>
/// <param name="raw">The raw stream backing the reader</param>
/// <param name="log"></param>
public MessagePump(LDAPReader reader, NetworkStream raw, ILogger log)
{
_reader = reader;
_raw = raw;
_head = new MessagePumpNode();
_tail = null;
_event = new AutoResetEvent(false);
_log = log;
}
public bool MoveNext()
{
// No messages yet, keep reading until we find one
if (Current != null && Current.IsTerminating)
{
return(false);
}
// Keep going until we find another message
while (true)
{
if (_token.IsCancellationRequested)
{
return(false);
}
if (_node.Message == null)
{
_event.WaitOne(1000);
}
if (_node.Message != Current && _node.Message.MessageId == _messageId)
{
Current = _node.Message;
return(true);
}
if (_node.Next != null)
{
_node = _node.Next;
}
else
{
_event.WaitOne(1000);
}
}
}