/// <summary>
/// Stops the proxy.
/// </summary>
/// <returns></returns>
public Task StopAsync()
{
try
{
logger?.LogTrace("ModbusTcpSerialProxy.StopAsync enter");
CheckDisposed();
if (!isStarted)
{
return(Task.CompletedTask);
}
isStarted = false;
server?.Dispose();
server = null;
client?.Dispose();
client = null;
return(Task.CompletedTask);
}
finally
{
logger?.LogTrace("ModbusTcpSerialProxy.StopAsync leave");
}
}
/// <summary>
/// Starts the proxy.
/// </summary>
/// <returns></returns>
public async Task StartAsync()
{
try
{
logger?.LogTrace("ModbusTcpSerialProxy.StartAsync enter");
CheckDisposed();
if (isStarted)
{
return;
}
isStarted = true;
client = new ModbusClient(settings.PortName, logger)
{
BaudRate = settings.BaudRate,
DataBits = settings.DataBits,
Handshake = settings.Handshake,
Parity = settings.Parity,
StopBits = settings.StopBits
};
await client.Connect();
server = new ModbusServer(settings.ListenPort, settings.ListenAddress, logger, HandleRequest);
await server.Initialization;
}
finally
{
logger?.LogTrace("ModbusTcpSerialProxy.StartAsync leave");
}
}
private static async Task <int> RunServerAsync(ILogger logger, CancellationToken cancellationToken)
{
Console.Write("Connection Type [1] TCP, [2] RS485: ");
int cType = Convert.ToInt32(Console.ReadLine().Trim());
IModbusServer server = null;
try
{
switch (cType)
{
case 1:
{
Console.Write("Bind IP address: ");
var ip = IPAddress.Parse(Console.ReadLine().Trim());
Console.Write("Port: ");
int port = Convert.ToInt32(Console.ReadLine().Trim());
var tcp = new TcpServer(port, ip, logger)
{
Timeout = TimeSpan.FromSeconds(3)
};
server = tcp;
}
break;
case 2:
{
Console.Write("Interface: ");
string port = Console.ReadLine().Trim();
Console.Write("Baud: ");
int baud = Convert.ToInt32(Console.ReadLine().Trim());
Console.Write("Stop-Bits [0|1|2|3=1.5]: ");
int stopBits = Convert.ToInt32(Console.ReadLine().Trim());
Console.Write("Parity [0] None [1] Odd [2] Even [3] Mark [4] Space: ");
int parity = Convert.ToInt32(Console.ReadLine().Trim());
Console.Write("Handshake [0] None [1] X-On/Off [2] RTS [3] RTS+X-On/Off: ");
int handshake = Convert.ToInt32(Console.ReadLine().Trim());
Console.Write("Timeout (ms): ");
int timeout = Convert.ToInt32(Console.ReadLine().Trim());
server = new SerialServer(port)
{
BaudRate = (BaudRate)baud,
DataBits = 8,
StopBits = (StopBits)stopBits,
Parity = (Parity)parity,
Handshake = (Handshake)handshake,
Timeout = TimeSpan.FromMilliseconds(timeout)
};
}
break;
default:
throw new ArgumentException("Type unknown");
}
server.AddDevice(1);
server.AddDevice(5);
server.AddDevice(10);
Register.Create(123.45f, 100, false).ForEach(r => server.SetHoldingRegister(1, r));
Console.WriteLine("Server is running... press CTRL+C to exit.");
await Task.Delay(Timeout.Infinite, cancellationToken);
}
catch (OperationCanceledException) when(cancellationToken.IsCancellationRequested)
{
}
finally
{
server?.Dispose();
}
return(0);
}
