public void ReadRequestResponse_ConnectionAbortedWhileReadingMBAPHeader()
{
var mock = new Mock <IStreamResource>(MockBehavior.Strict);
mock.Setup(s => s.Read(It.Is <byte[]>(x => x.Length == 6), 0, 6)).Returns(3);
mock.Setup(s => s.Read(It.Is <byte[]>(x => x.Length == 6), 3, 3)).Returns(0);
Assert.Throws <IOException>(() => ModbusIpTransport.ReadRequestResponse(mock.Object, NullModbusLogger.Instance));
mock.VerifyAll();
}
public void BuildMessageFrame()
{
MockRepository mocks = new MockRepository();
ModbusIpTransport mockModbusTcpTransport = mocks.PartialMock <ModbusIpTransport>(MockRepository.GenerateStub <IStreamResource>());
ReadCoilsInputsRequest message = new ReadCoilsInputsRequest(Modbus.ReadCoils, 2, 10, 5);
mocks.ReplayAll();
Assert.AreEqual(new byte[] { 0, 0, 0, 0, 0, 6, 2, 1, 0, 10, 0, 5 }, mockModbusTcpTransport.BuildMessageFrame(message));
mocks.VerifyAll();
}
public void GetNewTransactionId()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub<IStreamResource>());
Dictionary<int, string> transactionIds = new Dictionary<int, string>();
for (int i = 0; i < UInt16.MaxValue; i++)
transactionIds.Add(transport.GetNewTransactionId(), String.Empty);
Assert.AreEqual(1, transport.GetNewTransactionId());
Assert.AreEqual(2, transport.GetNewTransactionId());
}
public void ReadRequestResponse_ConnectionAbortedWhileReadingMBAPHeader()
{
MockRepository mocks = new MockRepository();
var mockTransport = mocks.StrictMock <IStreamResource>(null);
Expect.Call(mockTransport.Read(new byte[6], 0, 6)).Return(0);
mocks.ReplayAll();
Assert.Throws <IOException>(() => ModbusIpTransport.ReadRequestResponse(mockTransport));
mocks.VerifyAll();
}
public void ReadRequestResponse_ConnectionAbortedWhileReadingMessageFrame()
{
Mock <IStreamResource>?mock = new(MockBehavior.Strict);
mock.Setup(s => s.Read(It.Is <byte[]>(x => x.Length == 6), 0, 6)).Returns(6);
mock.Setup(s => s.Read(It.Is <byte[]>(x => x.Length == 6), 0, 6)).Returns(3);
mock.Setup(s => s.Read(It.Is <byte[]>(x => x.Length == 6), 3, 3)).Returns(0);
Assert.Throws <IOException>(() => ModbusIpTransport.ReadRequestResponse(mock.Object));
mock.VerifyAll();
}
public void OnShouldRetryResponse_ReturnsFalse_IfOutsideThreshold()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub <IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
request.TransactionId = 5;
response.TransactionId = 2;
transport.RetryOnOldResponseThreshold = 3;
Assert.False(transport.OnShouldRetryResponse(request, response));
}
public void OnShouldRetryResponse_ReturnsFalse_IfOutsideThreshold()
{
var transport = new ModbusIpTransport(StreamResourceMock);
var request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
var response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
request.TransactionId = 5;
response.TransactionId = 2;
transport.RetryOnOldResponseThreshold = 3;
Assert.False((bool)transport.OnShouldRetryResponse(request, response));
}
public void OnShouldRetryResponse_ReturnsFalse_IfThresholdDisabled()
{
var transport = new ModbusIpTransport(StreamResourceMock.Object);
var request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
var response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
request.TransactionId = 5;
response.TransactionId = 4;
transport.RetryOnOldResponseThreshold = 0;
Assert.False(transport.OnShouldRetryResponse(request, response));
}
public void OnShouldRetryResponse_ReturnsFalse_IfOutsideThreshold()
{
var transport = new ModbusIpTransport(StreamResourceMock, new ModbusFactory(), NullModbusLogger.Instance);
var request = new ReadCoilsInputsRequest(ModbusFunctionCodes.ReadCoils, 1, 1, 1);
var response = new ReadCoilsInputsResponse(ModbusFunctionCodes.ReadCoils, 1, 1, null);
request.TransactionId = 5;
response.TransactionId = 2;
transport.RetryOnOldResponseThreshold = 3;
Assert.False(transport.OnShouldRetryResponse(request, response));
}
public void ValidateResponse_MismatchingTransactionIds()
{
var transport = new ModbusIpTransport(StreamResourceMock, new ModbusFactory(), NullModbusLogger.Instance);
var request = new ReadCoilsInputsRequest(ModbusFunctionCodes.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
var response = new ReadCoilsInputsResponse(ModbusFunctionCodes.ReadCoils, 1, 1, null);
response.TransactionId = 6;
Assert.Throws <IOException>(() => transport.ValidateResponse(request, response));
}
public void GetNewTransactionId()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub <IStreamResource>());
Dictionary <int, string> transactionIds = new Dictionary <int, string>();
for (int i = 0; i < UInt16.MaxValue; i++)
{
transactionIds.Add(transport.GetNewTransactionId(), String.Empty);
}
Assert.Equal(1, transport.GetNewTransactionId());
Assert.Equal(2, transport.GetNewTransactionId());
}
public void ValidateResponse_MismatchingTransactionIds()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub <IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 6;
Assert.Throws <IOException>(() => transport.ValidateResponse(request, response));
}
public void ValidateResponse_RequestAheadOfResponse_RequestsReread()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub <IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 4;
Assert.IsFalse(transport.ValidateResponse(request, response));
}
public void ValidateResponse_MismatchingTransactionIds()
{
var transport = new ModbusIpTransport(StreamResourceMock.Object);
var request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
var response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 6;
Assert.Throws <IOException>(() => transport.ValidateResponse(request, response));
}
public void ValidateResponse_PassesWithMatchingTransactionDetails()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub <IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 5;
// no exception is thrown, and return true
Assert.IsTrue(transport.ValidateResponse(request, response));
}
public void ValidateResponse()
{
var transport = new ModbusIpTransport(StreamResourceMock);
var request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
var response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 5;
// no exception is thrown
transport.ValidateResponse(request, response);
}
public void ValidateResponse()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub <IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 5;
// no exception is thrown
transport.ValidateResponse(request, response);
}
public void ValidateResponse()
{
var transport = new ModbusIpTransport(StreamResourceMock, new ModbusFactory(), NullModbusLogger.Instance);
var request = new ReadCoilsInputsRequest(ModbusFunctionCodes.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
var response = new ReadCoilsInputsResponse(ModbusFunctionCodes.ReadCoils, 1, 1, null);
response.TransactionId = 5;
// no exception is thrown
transport.ValidateResponse(request, response);
}
public void Write()
{
MockRepository mocks = new MockRepository();
var mockTcpStreamAdapter = mocks.StrictMock <IStreamResource>();
mockTcpStreamAdapter.Write(new byte[] { 255, 255, 0, 0, 0, 6, 1, 1, 0, 1, 0, 3 }, 0, 12);
ModbusIpTransport mockModbusTcpTransport = mocks.PartialMock <ModbusIpTransport>(mockTcpStreamAdapter);
Expect.Call(mockModbusTcpTransport.GetNewTransactionId()).Return(UInt16.MaxValue);
mocks.ReplayAll();
ReadCoilsInputsRequest request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 3);
mockModbusTcpTransport.Write(request);
mocks.VerifyAll();
}
public void ReadRequestResponse_ConnectionAbortedWhileReadingMessageFrame()
{
MockRepository mocks = new MockRepository();
var mockTransport = mocks.StrictMock <IStreamResource>(null);
byte[] mbapHeader = { 45, 63, 0, 0, 0, 6 };
Expect.Call(mockTransport.Read(new byte[6], 0, 6)).Do(((Func <byte[], int, int, int>) delegate(byte[] buf, int offset, int count)
{
Array.Copy(mbapHeader, buf, 6);
return(6);
}));
Expect.Call(mockTransport.Read(new byte[6], 0, 6)).Return(0);
mocks.ReplayAll();
ModbusIpTransport.ReadRequestResponse(mockTransport);
mocks.VerifyAll();
}
public void ShouldRetryResponse_ReturnsFalse_IfDifferentMessage()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub<IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 2, 1, 1);
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
Assert.False(transport.ShouldRetryResponse(request, response));
}
public void ValidateResponse_MismatchingTransactionIds()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub<IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 6;
Assert.Throws<IOException>(() => transport.ValidateResponse(request, response));
}
public void ValidateResponse_PassesWithMatchingTransactionDetails()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub<IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 5;
// no exception is thrown, and return true
Assert.IsTrue(transport.ValidateResponse(request, response));
}
public void ValidateResponse_RequestAheadOfResponse_RequestsReread()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub<IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 4;
Assert.IsFalse(transport.ValidateResponse(request, response));
}
public void ValidateResponse()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub<IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
request.TransactionId = 5;
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
response.TransactionId = 5;
// no exception is thrown
transport.ValidateResponse(request, response);
}
public IModbusMaster CreateIpMaster(IStreamResource streamResource)
{
var transport = new ModbusIpTransport(streamResource, this);
return(new ModbusIpMaster(transport));
}
public void OnShouldRetryResponse_ReturnsFalse_IfOutsideThreshold()
{
ModbusIpTransport transport = new ModbusIpTransport(MockRepository.GenerateStub<IStreamResource>());
IModbusMessage request = new ReadCoilsInputsRequest(Modbus.ReadCoils, 1, 1, 1);
IModbusMessage response = new ReadCoilsInputsResponse(Modbus.ReadCoils, 1, 1, null);
request.TransactionId = 5;
response.TransactionId = 2;
transport.RetryOnOldResponseThreshold = 3;
Assert.False(transport.OnShouldRetryResponse(request, response));
}
