am-wd/AMWD.Protocols.Modbus
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Fixed wrong R/W timeout handling on tcp listener handling. v0.4.2

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This commit is contained in:
Andreas Müller
2025-02-07 17:05:23 +01:00
parent 17fc216658
commit 885079ae70
2 changed files with 27 additions and 9 deletions
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25
AMWD.Protocols.Modbus.Tcp/ModbusTcpProxy.cs
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@@ -213,23 +213,32 @@ namespace AMWD.Protocols.Modbus.Tcp
{
var requestBytes = new List<byte>();
// Waiting for next request
byte[] headerBytes = await stream.ReadExpectedBytesAsync(6, cancellationToken).ConfigureAwait(continueOnCapturedContext: false);
requestBytes.AddRange(headerBytes);
ushort length = headerBytes
.Skip(4).Take(2).ToArray()
.GetBigEndianUInt16();
// Waiting for the remaining required data
using (var cts = new CancellationTokenSource(ReadWriteTimeout))
using (cancellationToken.Register(cts.Cancel))
{
byte[] headerBytes = await stream.ReadExpectedBytesAsync(6, cts.Token).ConfigureAwait(continueOnCapturedContext: false);
requestBytes.AddRange(headerBytes);
ushort length = headerBytes
.Skip(4).Take(2).ToArray()
.GetBigEndianUInt16();
byte[] bodyBytes = await stream.ReadExpectedBytesAsync(length, cts.Token).ConfigureAwait(continueOnCapturedContext: false);
requestBytes.AddRange(bodyBytes);
}
byte[] responseBytes = await HandleRequestAsync([.. requestBytes], cancellationToken).ConfigureAwait(continueOnCapturedContext: false);
if (responseBytes != null)
await stream.WriteAsync(responseBytes, 0, responseBytes.Length, cancellationToken).ConfigureAwait(continueOnCapturedContext: false);
{
// Write response when available
using (var cts = new CancellationTokenSource(ReadWriteTimeout))
using (cancellationToken.Register(cts.Cancel))
{
await stream.WriteAsync(responseBytes, 0, responseBytes.Length, cts.Token).ConfigureAwait(continueOnCapturedContext: false);
}
}
}
}
catch

11
CHANGELOG.md
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@@ -9,6 +9,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
_nothing changed yet_
## [v0.4.2] (2025-02-07)
### Fixed
- Fixing issue with R/W timeouts while processing client requests on the `ModbusTcpProxy`.
## [v0.4.1] (2025-02-06)
### Changed
@@ -87,7 +95,8 @@ So this tag is only here for documentation purposes of the NuGet Gallery.
[Unreleased]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.4.1...HEAD
[Unreleased]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.4.2...HEAD
[v0.4.2]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.4.1...v0.4.2
[v0.4.1]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.4.0...v0.4.1
[v0.4.0]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.3.2...v0.4.0
[v0.3.2]: https://github.com/AM-WD/AMWD.Protocols.Modbus/compare/v0.3.1...v0.3.2