/// <summary>
/// Start slave listening for requests.
/// </summary>
public override async Task ListenAsync(CancellationToken cancellationToken = new CancellationToken())
{
Logger.Information("Start Modbus Tcp Server.");
// TODO: add state {stopped, listening} and check it before starting
Server.Start();
// Cancellation code based on https://stackoverflow.com/a/47049129/11066760
using (cancellationToken.Register(() => Server.Stop()))
{
try
{
while (!cancellationToken.IsCancellationRequested)
{
TcpClient client = await Server.AcceptTcpClientAsync().ConfigureAwait(false);
var masterConnection = new ModbusMasterTcpConnection(client, this, ModbusFactory, Logger);
masterConnection.ModbusMasterTcpConnectionClosed += OnMasterConnectionClosedHandler;
_masters.TryAdd(client.Client.RemoteEndPoint.ToString(), masterConnection);
}
}
catch (InvalidOperationException)
{
// Either Server.Start wasn't called (a bug!)
// or the CancellationToken was cancelled before
// we started accepting (giving an InvalidOperationException),
// or the CancellationToken was cancelled after
// we started accepting (giving an ObjectDisposedException).
//
// In the latter two cases we should surface the cancellation
// exception, or otherwise rethrow the original exception.
cancellationToken.ThrowIfCancellationRequested();
throw;
}
}
}
/// <summary>
/// Start slave listening for requests.
/// </summary>
public override async Task ListenAsync(CancellationToken cancellationToken = new CancellationToken())
{
Logger.Information("Start Modbus Tcp Server.");
// TODO: add state {stoped, listening} and check it before starting
Server.Start();
while (!cancellationToken.IsCancellationRequested)
{
TcpClient client = await Server.AcceptTcpClientAsync().ConfigureAwait(false);
var masterConnection = new ModbusMasterTcpConnection(client, this, ModbusFactory, Logger);
masterConnection.ModbusMasterTcpConnectionClosed += OnMasterConnectionClosedHandler;
_masters.TryAdd(client.Client.RemoteEndPoint.ToString(), masterConnection);
}
}