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常用工具集/Utility/Network/Modbus/SharpModbus/ModbusTCPProtocol.cs

@@ -0,0 +1,29 @@
+using System;
+
+namespace SharpModbus
+{
+    public class ModbusTCPProtocol : IModbusProtocol
+    {
+        private ushort transactionId = 0;
+
+        public ushort TransactionId
+        {
+            get { return transactionId; }
+            set { transactionId = value; }
+        }
+
+        public IModbusWrapper Wrap(IModbusCommand wrapped)
+        {
+            return new ModbusTCPWrapper(wrapped, transactionId++);
+        }
+
+        public IModbusWrapper Parse(byte[] request, int offset)
+        {
+            var wrapped = ModbusParser.Parse(request, offset + 6);
+            Tools.AssertEqual(wrapped.RequestLength, ModbusUtils.GetUShort(request, offset + 4),
+                "RequestLength mismatch got {0} expected {1}");
+            var transaction = ModbusUtils.GetUShort(request, offset);
+            return new ModbusTCPWrapper(wrapped, transaction);
+        }
+    }
+}