5 Commits

14 changed files with 73 additions and 39 deletions

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@@ -1,4 +1,4 @@
using System.Runtime.CompilerServices;
[assembly: InternalsVisibleTo("AMWD.Protocols.Modbus.Tests")]
[assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")]
[assembly: InternalsVisibleTo("AMWD.Protocols.Modbus.Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100adcc4f9f5bb3ac73cb30661f6f35772b8f90a74412925764a960af06ef125bdcec05ed1d139503d5203fb72aa3fa74bab58e82ac2a6cd4b650f8cbf7086a71bc2dfc67e95b8d26d776d60856acf3121f831529b1a4dee91b34ac84f95f71a1165b7783edb591929ba2a684100c92bbed8859c7266fb507f6f55bb6f7fcac80b4")]
[assembly: InternalsVisibleTo("DynamicProxyGenAssembly2, PublicKey=0024000004800000940000000602000000240000525341310004000001000100c547cac37abd99c8db225ef2f6c8a3602f3b3606cc9891605d02baa56104f4cfc0734aa39b93bf7852f7d9266654753cc297e7d2edfe0bac1cdcf9f717241550e0a7b191195b7667bb4f64bcb8e2121380fd1d9d46ad2d92d2d15605093924cceaf74c4861eff62abf69b9291ed0a340e113be11e6a7d3113e92484cf7045cc7")]

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@@ -6,11 +6,13 @@ using AMWD.Protocols.Modbus.Common.Contracts;
namespace AMWD.Protocols.Modbus.Common.Protocols
{
/// <summary>
/// Implementation of the Modbus RTU over TCP protocol.
/// Implementation of the Modbus RTU over Modbus TCP protocol.
/// </summary>
/// <remarks>
/// The Modbus RTU over Modbus TCP is rarely used.
/// It is a non-standard variant of Modbus TCP that includes the Modbus RTU CRC at the end of the message.
/// It is a non-standard variant of Modbus TCP that includes wrapps a Modbus RTU message within a Modbus TCP message.
/// <br/>
/// Definition found on <see href="https://www.fernhillsoftware.com/help/drivers/modbus/modbus-protocol.html">Fernhill Software</see>.
/// </remarks>
public class RtuOverTcpProtocol : IModbusProtocol
{
@@ -475,16 +477,16 @@ namespace AMWD.Protocols.Modbus.Common.Protocols
// Function code
request[7] = (byte)ModbusFunctionCode.WriteSingleRegister;
byte[] addrBytes = register.Address.ToBigEndianBytes();
request[8] = addrBytes[0];
byte[] addrBytes = register.Address.ToBigEndianBytes();
request[8] = addrBytes[0];
request[9] = addrBytes[1];
request[10] = register.HighByte;
request[10] = register.HighByte;
request[11] = register.LowByte;
// CRC
byte[] crc = RtuProtocol.CRC16(request, 6, 6);
request[12] = crc[0];
byte[] crc = RtuProtocol.CRC16(request, 6, 6);
request[12] = crc[0];
request[13] = crc[1];
return request;

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@@ -59,8 +59,8 @@ Here you have the specific default implementations for the Modbus Protocol.
- ASCII
- RTU
- RTU over TCP
- TCP
- [RTU over TCP]
**NOTE:**
The implementations over serial line (RTU and ASCII) have a minimum unit ID of one (1) and maximum unit ID of 247 referring to the specification.
@@ -68,4 +68,9 @@ This validation is _not_ implemented here due to real world experience, that som
---
Published under MIT License (see [**tl;dr**Legal](https://www.tldrlegal.com/license/mit-license))
Published under MIT License (see [**tl;dr**Legal])
[RTU over TCP]: https://www.fernhillsoftware.com/help/drivers/modbus/modbus-protocol.html
[**tl;dr**Legal]: https://www.tldrlegal.com/license/mit-license

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@@ -46,7 +46,7 @@ namespace AMWD.Protocols.Modbus.Proxy
ListenAddress = listenAddress ?? IPAddress.Loopback;
if (ushort.MinValue < listenPort || listenPort < ushort.MaxValue)
if (listenPort < ushort.MinValue || ushort.MaxValue < listenPort)
throw new ArgumentOutOfRangeException(nameof(listenPort));
try

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@@ -2,7 +2,7 @@
With this package the server and client implementations will be combined as proxy.
You can use any `ModbusBasClient` implementation as target client and plug it into the implemented `ModbusTcpProxy` or `ModbusRtuProxy`, which implement the server side.
You can use any `ModbusBaseClient` implementation as target client and plug it into the implemented `ModbusTcpProxy` or `ModbusRtuProxy`, which implement the server side.
---

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@@ -41,8 +41,4 @@
<ProjectReference Include="..\AMWD.Protocols.Modbus.Common\AMWD.Protocols.Modbus.Common.csproj" />
</ItemGroup>
<ItemGroup>
<Folder Include="Extensions\" />
</ItemGroup>
</Project>

View File

@@ -186,7 +186,7 @@ namespace AMWD.Protocols.Modbus.Serial
private Task StopAsyncInternal(CancellationToken cancellationToken)
{
_stopCts.Cancel();
_stopCts?.Cancel();
_serialPort.Close();
_serialPort.DataReceived -= OnDataReceived;
@@ -328,7 +328,7 @@ namespace AMWD.Protocols.Modbus.Serial
ushort firstAddress = requestBytes.GetBigEndianUInt16(2);
ushort count = requestBytes.GetBigEndianUInt16(4);
if (TcpProtocol.MIN_READ_COUNT < count || count < TcpProtocol.MAX_DISCRETE_READ_COUNT)
if (count < RtuProtocol.MIN_READ_COUNT || RtuProtocol.MAX_DISCRETE_READ_COUNT < count)
{
responseBytes[1] |= 0x80;
responseBytes.Add((byte)ModbusErrorCode.IllegalDataValue);
@@ -385,7 +385,7 @@ namespace AMWD.Protocols.Modbus.Serial
ushort firstAddress = requestBytes.GetBigEndianUInt16(2);
ushort count = requestBytes.GetBigEndianUInt16(4);
if (TcpProtocol.MIN_READ_COUNT < count || count < TcpProtocol.MAX_DISCRETE_READ_COUNT)
if (count < RtuProtocol.MIN_READ_COUNT || RtuProtocol.MAX_DISCRETE_READ_COUNT < count)
{
responseBytes[1] |= 0x80;
responseBytes.Add((byte)ModbusErrorCode.IllegalDataValue);
@@ -442,7 +442,7 @@ namespace AMWD.Protocols.Modbus.Serial
ushort firstAddress = requestBytes.GetBigEndianUInt16(2);
ushort count = requestBytes.GetBigEndianUInt16(4);
if (TcpProtocol.MIN_READ_COUNT < count || count < TcpProtocol.MAX_REGISTER_READ_COUNT)
if (count < RtuProtocol.MIN_READ_COUNT || RtuProtocol.MAX_REGISTER_READ_COUNT < count)
{
responseBytes[1] |= 0x80;
responseBytes.Add((byte)ModbusErrorCode.IllegalDataValue);
@@ -496,7 +496,7 @@ namespace AMWD.Protocols.Modbus.Serial
ushort firstAddress = requestBytes.GetBigEndianUInt16(2);
ushort count = requestBytes.GetBigEndianUInt16(4);
if (TcpProtocol.MIN_READ_COUNT < count || count < TcpProtocol.MAX_REGISTER_READ_COUNT)
if (count < RtuProtocol.MIN_READ_COUNT || RtuProtocol.MAX_REGISTER_READ_COUNT < count)
{
responseBytes[1] |= 0x80;
responseBytes.Add((byte)ModbusErrorCode.IllegalDataValue);

View File

@@ -34,8 +34,8 @@ namespace AMWD.Protocols.Modbus.Tcp
private readonly Task _processingTask;
private readonly AsyncQueue<RequestQueueItem> _requestQueue = new();
private TimeSpan _readTimeout = TimeSpan.FromMilliseconds(1);
private TimeSpan _writeTimeout = TimeSpan.FromMilliseconds(1);
private TimeSpan _readTimeout = TimeSpan.FromSeconds(1);
private TimeSpan _writeTimeout = TimeSpan.FromSeconds(1);
#endregion Fields

View File

@@ -36,6 +36,8 @@ namespace AMWD.Protocols.Modbus.Tcp
private readonly ReaderWriterLockSlim _deviceListLock = new();
private readonly Dictionary<byte, ModbusDevice> _devices = [];
private TimeSpan _readWriteTimeout = TimeSpan.FromSeconds(1);
#endregion Fields
#region Constructors
@@ -49,7 +51,7 @@ namespace AMWD.Protocols.Modbus.Tcp
{
ListenAddress = listenAddress ?? IPAddress.Loopback;
if (ushort.MinValue < listenPort || listenPort < ushort.MaxValue)
if (listenPort < ushort.MinValue || ushort.MaxValue < listenPort)
throw new ArgumentOutOfRangeException(nameof(listenPort));
try
@@ -105,7 +107,17 @@ namespace AMWD.Protocols.Modbus.Tcp
/// <summary>
/// Gets or sets the read/write timeout.
/// </summary>
public TimeSpan ReadWriteTimeout { get; set; }
public TimeSpan ReadWriteTimeout
{
get => _readWriteTimeout;
set
{
if (value < TimeSpan.Zero)
throw new ArgumentOutOfRangeException(nameof(value));
_readWriteTimeout = value;
}
}
#endregion Properties
@@ -151,11 +163,11 @@ namespace AMWD.Protocols.Modbus.Tcp
private async Task StopAsyncInternal(CancellationToken cancellationToken = default)
{
_stopCts.Cancel();
_stopCts?.Cancel();
_listener.Stop();
_listener?.Stop();
#if NET8_0_OR_GREATER
_listener.Dispose();
_listener?.Dispose();
#endif
try
{
@@ -354,7 +366,7 @@ namespace AMWD.Protocols.Modbus.Tcp
ushort firstAddress = requestBytes.GetBigEndianUInt16(8);
ushort count = requestBytes.GetBigEndianUInt16(10);
if (TcpProtocol.MIN_READ_COUNT < count || count < TcpProtocol.MAX_DISCRETE_READ_COUNT)
if (count < TcpProtocol.MIN_READ_COUNT || TcpProtocol.MAX_DISCRETE_READ_COUNT < count)
{
responseBytes[7] |= 0x80;
responseBytes.Add((byte)ModbusErrorCode.IllegalDataValue);
@@ -406,7 +418,7 @@ namespace AMWD.Protocols.Modbus.Tcp
ushort firstAddress = requestBytes.GetBigEndianUInt16(8);
ushort count = requestBytes.GetBigEndianUInt16(10);
if (TcpProtocol.MIN_READ_COUNT < count || count < TcpProtocol.MAX_DISCRETE_READ_COUNT)
if (count < TcpProtocol.MIN_READ_COUNT || TcpProtocol.MAX_DISCRETE_READ_COUNT < count)
{
responseBytes[7] |= 0x80;
responseBytes.Add((byte)ModbusErrorCode.IllegalDataValue);
@@ -458,7 +470,7 @@ namespace AMWD.Protocols.Modbus.Tcp
ushort firstAddress = requestBytes.GetBigEndianUInt16(8);
ushort count = requestBytes.GetBigEndianUInt16(10);
if (TcpProtocol.MIN_READ_COUNT < count || count < TcpProtocol.MAX_REGISTER_READ_COUNT)
if (count < TcpProtocol.MIN_READ_COUNT || TcpProtocol.MAX_REGISTER_READ_COUNT < count)
{
responseBytes[7] |= 0x80;
responseBytes.Add((byte)ModbusErrorCode.IllegalDataValue);
@@ -507,7 +519,7 @@ namespace AMWD.Protocols.Modbus.Tcp
ushort firstAddress = requestBytes.GetBigEndianUInt16(8);
ushort count = requestBytes.GetBigEndianUInt16(10);
if (TcpProtocol.MIN_READ_COUNT < count || count < TcpProtocol.MAX_REGISTER_READ_COUNT)
if (count < TcpProtocol.MIN_READ_COUNT || TcpProtocol.MAX_REGISTER_READ_COUNT < count)
{
responseBytes[7] |= 0x80;
responseBytes.Add((byte)ModbusErrorCode.IllegalDataValue);

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@@ -23,14 +23,14 @@ float voltage = registers.GetSingle();
Console.WriteLine($"The voltage of device #{unitId} between L1 and N is: {voltage:N2}V");
```
If you want to use the `RTU over TCP` protocol instead, you can do this on initialization:
If you have a device speaking `RTU` connected over `TCP`, you can use it as followed:
```csharp
// [...]
using var client = new ModbusTcpClient(host, port)
{
Protocol = new RtuOverTcpProtocol();
Protocol = new RtuProtocol()
};
// [...]

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@@ -21,10 +21,10 @@
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
<PackageReference Include="Moq" Version="4.20.70" />
<PackageReference Include="MSTest.TestAdapter" Version="3.2.2" />
<PackageReference Include="MSTest.TestFramework" Version="3.2.2" />
<PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
<PackageReference Include="MSTest.TestFramework" Version="3.4.3" />
</ItemGroup>
<ItemGroup>

BIN
AMWD.Protocols.Modbus.snk Normal file

Binary file not shown.

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@@ -10,6 +10,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
_no changes_
## [v0.3.2] (2024-09-04)
### Added
- Build configuration for strong named assemblies.
## [v0.3.1] (2024-06-28)
### Fixed
- Issues with range validation on several lines of code in server implementations.
## [v0.3.0] (2024-05-31)
### Added
@@ -38,6 +52,8 @@ So this tag is only here for documentation purposes of the NuGet Gallery.
[Unreleased]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.3.0...HEAD
[Unreleased]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.3.2...HEAD
[v0.3.2]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.3.1...v0.3.2
[v0.3.1]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.3.0...v0.3.1
[v0.3.0]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.2.0...v0.3.0
[v0.2.0]: https://github.com/AM-WD/AMWD.Protocols.Modbus/tree/v0.2.0

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@@ -25,6 +25,9 @@
<Authors>Andreas Müller</Authors>
<Copyright>© {copyright:2018-} AM.WD</Copyright>
<PackageLicenseExpression>MIT</PackageLicenseExpression>
<SignAssembly>true</SignAssembly>
<AssemblyOriginatorKeyFile>../AMWD.Protocols.Modbus.snk</AssemblyOriginatorKeyFile>
</PropertyGroup>
<PropertyGroup Condition="'$(GITLAB_CI)' == 'true'">