protected override async Task WriteRequestAsync(IModbusRequest request, CancellationToken token = default)
{
using var memoryOwner = MemoryPool <byte> .Shared.Rent(MbapHeaderSizeOnRequest + request.ByteSize);
var memory = memoryOwner.Memory;
BitConverter.TryWriteBytes(memory.Slice(0, 2).Span, IPAddress.HostToNetworkOrder((short)request.TransactionId));
memory.Span[2] = 0;
memory.Span[3] = 0;
BitConverter.TryWriteBytes(memory.Slice(4, 2).Span, IPAddress.HostToNetworkOrder((short)(request.ByteSize + 1)));
memory.Span[6] = request.SlaveAddress;
request.WriteTo(memory.Slice(MbapHeaderSizeOnRequest, request.ByteSize));
await PipeResource.WriteAsync(memory.Slice(0, MbapHeaderSizeOnRequest + request.ByteSize), token).ConfigureAwait(false);
}
protected override async Task WriteRequestAsync(IModbusRequest request, CancellationToken token = default)
{
var totalSize = SlaveAddressSize + CrcSize + request.ByteSize;
using var memoryOwner = MemoryPool <byte> .Shared.Rent(totalSize);
var memory = memoryOwner.Memory;
memory.Span[0] = request.SlaveAddress;
request.WriteTo(memory.Slice(SlaveAddressSize, request.ByteSize));
ushort crc = crcCalculator.Calculate(memory.Slice(0, SlaveAddressSize + request.ByteSize));
BitConverter.TryWriteBytes(memory.Slice(SlaveAddressSize + request.ByteSize, CrcSize).Span, crc);
await PipeResource.WriteAsync(memory.Slice(0, totalSize), token).ConfigureAwait(false);
}