v3.0.0

Added

• ClientSession for executing several commands as one atomic sequence.
• Asynchronous Client, ClientSession and Stream operations.

Changed

• Client constructors to take a Stream instance instead of a SerialPort or IP address/port.
• Client and Stream locking to use SemaphoreSlim instead of Monitor; locking the underlying SerialPort object directly is no longer supported, share a Stream instance instead.
• Renamed Exception to ModbusException.
• Used FunctionCode enum instead of raw byte literals internally.
• Replaced exception-based draining in ReadAvailableData with buffer-availability polling.
• Replaced LINQ-based response trimming with Array.Copy.

Fixed

• Partial TCP reads in NetworkStream.Read.
• RTU write delay not updated on Protocol change.
• NetworkStream.Open wrapping connection failures in AggregateException.
• Stream.ReadTo not bounded by ReadTimeout.

v2.4.0

Changed

• Made timeouts client properties.

v2.3.1

Fixed

• Setting stream delay after stream change.

v2.3.0

Added

• Properties for communication settings.

v2.2.2

Fixed

• Missing NetworkStream lock.

v2.2.1

Fixed

• IDisposable implementation.

v2.2.0

Changed

• .NET 6.0 target to .NET Standard 2.0.

v2.1.0

Added

• ConnectTimeout property.

Changed

• Disabled Nagle's algorithm.

v2.0.1

Added

• ExceptionCode enum.
• DelayAfterRead property.

Changed

• FunctionCode enum naming.
• Timeout property to ReadTimeout property.

Fixed

• ReadTimeout setting in examples.