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

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+using System;
+using System.Collections.Generic;
+
+namespace SharpModbus
+{
+    public class ModbusTCPScanner : IModbusScanner
+    {
+        private readonly ModbusTCPProtocol protocol = new ModbusTCPProtocol();
+        private readonly List<byte> buffer = new List<byte>();
+
+        public void Append(byte[] data, int offset, int count)
+        {
+            for (var i = 0; i < count; i++) buffer.Add(data[offset + i]);
+        }
+
+        public IModbusWrapper Scan()
+        {
+            if (buffer.Count >= 6)
+            {
+                var length = ModbusUtils.GetUShort(buffer[4], buffer[5]);
+                if (buffer.Count >= 6 + length)
+                {
+                    var request = buffer.GetRange(0, 6 + length).ToArray();
+                    buffer.RemoveRange(0, 6 + length);
+                    return protocol.Parse(request, 0);
+                }
+            }
+            return null; //not enough data to parse
+        }
+    }
+}