37 lines
1.0 KiB
C#
37 lines
1.0 KiB
C#
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using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames;
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using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
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namespace InnovEnergy.Lib.Protocols.Modbus.Tcp;
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internal readonly struct MbapHeader
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{
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public const Int32 Size = 6;
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public ArraySegment<Byte> Data { get; }
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public MbWord Id => Data.WordAt(0);
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public MbWord Protocol => Data.WordAt(2);
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public MbWord FrameLength => Data.WordAt(4);
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public MbapHeader(UInt16 transactionId, Int32 frameLength)
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{
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Data = new ArraySegment<Byte>(new Byte[Size]);
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Id.Set(transactionId);
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FrameLength.Set(frameLength);
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}
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public MbapHeader(Byte[] data) : this(new ArraySegment<Byte>(data))
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{ }
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public MbapHeader(ArraySegment<Byte> data)
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{
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Data = data;
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if (data.Count != Size)
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throw new ArgumentOutOfRangeException($"Expecting an array exactly {Size} bytes long!");
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if (Protocol != 0)
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throw new ArgumentException($"Protocol {Protocol} not supported!", nameof(Protocol));
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}
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}
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