private async Task Loop()
{
_cancellationTokenSource = new CancellationTokenSource();
var cancellationToken = _cancellationTokenSource.Token;
while (!cancellationToken.IsCancellationRequested)
{
var needawait = false;
try
{
var cid = _nextConnectionId++;
_logger.LogInformation($"<ac {cid} {Thread.CurrentThread.ManagedThreadId}");
var tcpClient = await _listener.AcceptTcpClientAsync();
_logger.LogInformation($">ac {cid} {Thread.CurrentThread.ManagedThreadId} {tcpClient.Client.RemoteEndPoint}");
var session = new SmtpConnector(this, tcpClient, cid);
_ = session.Accept();
}
catch (Exception ex)
{
Kooboo.Data.Log.Instance.Exception.Write(DateTime.Now.ToString() + ex.Message + "\r\n" + ex.StackTrace + "\r\n" + ex.Source);
needawait = true;
}
if (needawait)
{
await Task.Delay(200);
}
}
}
public void AddConnection(SmtpConnector connection)
{
if (!_connectionReferences.TryAdd(connection.Id, new SmtpConnectionReference(connection)))
{
throw new ArgumentException(nameof(connection));
}
}
public async void Start()
{
// 第一层端口占用保护
if (Lib.Helper.NetworkHelper.IsPortInUse(Port))
{
return;
}
try
{
_listener = new TcpListener(new IPEndPoint(IPAddress.Any, Port));
if (Timeout != 0)
{
_listener.Server.ReceiveTimeout =
_listener.Server.SendTimeout = Timeout;
}
_listener.Start();
}
catch (SocketException ex)
{
// 第二层端口占用保护
if (ex.ErrorCode == 10048)
{
_listener = null;
return;
}
else
{
throw ex;
}
}
_cancellationTokenSource = new CancellationTokenSource();
var cancellationToken = _cancellationTokenSource.Token;
while (!cancellationToken.IsCancellationRequested)
{
try
{
var tcpClient = await _listener.AcceptTcpClientAsync();
var session = new SmtpConnector(this, tcpClient);
session.Accept();
}
catch
{
}
}
}
private void Walk(SmtpConnector connection)
{
connection.CheckTimeout();
}
public SmtpConnectionReference(SmtpConnector connection)
{
_weakReference = new WeakReference <SmtpConnector>(connection);
ConnectionId = connection.Id;
}
public bool TryGetConnection(out SmtpConnector connection)
{
return(_weakReference.TryGetTarget(out connection));
}