diff --git a/server/Program.cs b/server/Program.cs
index 5c93acd..0ed5a83 100644
--- a/server/Program.cs
+++ b/server/Program.cs
@@ -1,16 +1,26 @@
-using System.Net;
+using System.Reflection;
 using Microsoft.OpenApi.Models;
 
 var builder = WebApplication.CreateBuilder(args);
 builder.Services.AddEndpointsApiExplorer();
-builder.Services.AddSwaggerGen(c =>
+builder.Services.AddSwaggerGen(options =>
 {
-    c.SwaggerDoc("v1", new OpenApiInfo
+    options.SwaggerDoc("v1", new OpenApiInfo
     {
         Title = "FPGA Web Lab API",
         Description = "Use FPGA in the cloud",
         Version = "v1"
     });
+    // Generate Doc and Exam
+    var executingAssembly = Assembly.GetExecutingAssembly();
+    var xmlFilename = $"{executingAssembly.GetName().Name}.xml";
+    options.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, xmlFilename));
+    var referencedProjectsXmlDocPaths =
+        executingAssembly.GetReferencedAssemblies()
+        .Where(assembly => assembly.Name != null && assembly.Name.StartsWith("server", StringComparison.InvariantCultureIgnoreCase))
+        .Select(assembly => Path.Combine(AppContext.BaseDirectory, $"{assembly.Name}.xml"))
+        .Where(path => File.Exists(path));
+    foreach (var xmlDocPath in referencedProjectsXmlDocPaths) options.IncludeXmlComments(xmlDocPath);
 });
 
 var app = builder.Build();
diff --git a/server/server.csproj b/server/server.csproj
index aa05bf8..c74cb1d 100644
--- a/server/server.csproj
+++ b/server/server.csproj
@@ -4,13 +4,14 @@
     <TargetFramework>net9.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="DotNext" Version="5.19.1" />
     <PackageReference Include="Microsoft.OpenApi" Version="1.6.23" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="8.0.0" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="8.1.0" />
   </ItemGroup>
 
 </Project>
diff --git a/server/src/JtagController.cs b/server/src/JtagController.cs
new file mode 100644
index 0000000..bcbc267
--- /dev/null
+++ b/server/src/JtagController.cs
@@ -0,0 +1,69 @@
+using System.Net;
+using Common;
+using DotNext;
+using WebProtocol;
+
+namespace JtagController;
+
+/// <summary>
+/// Global Constant Jtag Address
+/// </summary>
+public static class JtagAddr
+{
+    /// <summary>
+    /// Jtag State Reg
+    /// </summary>
+    public const UInt32 STATE = 0x10_00_00_00;
+    /// <summary>
+    /// Jtag Read Reg
+    /// </summary>
+    public const UInt32 READ_DATA = 0x10_00_00_01;
+    /// <summary>
+    /// Jtag Write Reg
+    /// </summary>
+    public const UInt32 WRITE_DATA = 0x10_00_00_02;
+    /// <summary>
+    /// Jtag Write Command
+    /// </summary>
+    public const UInt32 WRITE_CMD = 0x10_00_00_03;
+}
+
+class Jtag
+{
+
+    readonly int port;
+    readonly string address;
+    private IPEndPoint ep;
+
+    public Jtag(string address, int port)
+    {
+        this.address = address;
+        this.port = port;
+        this.ep = new IPEndPoint(IPAddress.Parse(address), port);
+    }
+
+    public async ValueTask<Result<bool>> ClearRegisters()
+    {
+        var ret = true;
+        var opts = new SendAddrPackOptions();
+
+        opts.burstType = BurstType.FixedBurst;
+        opts.burstLength = 4;
+        opts.commandID = 0;
+        opts.address = JtagAddr.STATE;
+
+        // Write Jtag State Register
+        opts.isWrite = true;
+        ret = await UDPClientPool.SendAddrPackAsync(ep, new SendAddrPackage(opts));
+        if (!ret) throw new Exception("Send 1st Address Package Failed!");
+        ret = await UDPClientPool.SendDataPackAsync(ep,
+                new SendDataPackage(NumberProcessor.NumberToBytes(0xFF_FF_FF_FF, 4).Value));
+        if (!ret) throw new Exception("Send Data Package Failed!");
+
+        // Read Jtag State Register
+        ret = await UDPClientPool.SendAddrPackAsync(ep, new SendAddrPackage(opts));
+        if (!ret) throw new Exception("Send 2rd Address Package Failed!");
+
+        return ret;
+    }
+}
diff --git a/server/src/Router.cs b/server/src/Router.cs
index b21e362..d8532a9 100644
--- a/server/src/Router.cs
+++ b/server/src/Router.cs
@@ -1,41 +1,68 @@
 using System.Net;
 using Common;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
 
 namespace Router
 {
+    /// <summary>
+    /// Web API 
+    /// </summary>
     class API
     {
-        public static void SendString(string address, int port, string text)
+        /// <summary>
+        /// Send some String
+        /// </summary>
+        /// <param name="address">IP V4/V6 address</param>
+        /// <param name="port">Device UDP port</param>
+        /// <param name="text">Text for send</param>
+        /// <returns>Json: true or false</returns>
+        public static async ValueTask<IResult> SendString(string address, int port, string text)
         {
             var endPoint = new IPEndPoint(IPAddress.Parse(address), port);
-            UDPClientPool.AsyncSendString(endPoint, [text]);
+            var ret = await UDPClientPool.SendStringAsync(endPoint, [text]);
+            if (ret) { return Results.Json(true); }
+            else { return Results.Json(false); }
         }
 
-        public static void SendAddrPackage(
+
+        [HttpPost]
+        public static async ValueTask<IResult> SendAddrPackage(
             string address,
             int port,
-            WebProtocol.BurstType burstType,
-            byte commandID,
-            bool isWrite,
-            byte burstLength,
-            UInt32 devAddress)
+            // WebProtocol.BurstType burstType,
+            // byte commandID,
+            // bool isWrite,
+            // byte burstLength,
+            // UInt32 devAddress)
+            WebProtocol.SendAddrPackOptions opts)
         {
-            WebProtocol.SendAddrPackOptions opts;
-            opts.burstType = burstType;
-            opts.commandID = commandID;
-            opts.isWrite = isWrite;
-            opts.burstLength = burstLength;
-            opts.address = devAddress;
+            // WebProtocol.SendAddrPackOptions opts;
+            // opts.burstType = burstType;
+            // opts.commandID = commandID;
+            // opts.isWrite = isWrite;
+            // opts.burstLength = burstLength;
+            // opts.address = devAddress;
 
             var endPoint = new IPEndPoint(IPAddress.Parse(address), port);
-            UDPClientPool.SendAddrPack(endPoint, new WebProtocol.SendAddrPackage(opts));
+            var ret = await UDPClientPool.SendAddrPackAsync(endPoint, new WebProtocol.SendAddrPackage(opts));
+            if (ret) { return Results.Json(true); }
+            else { return Results.Json(false); }
         }
 
-        public static void SendDataPackage(string address, int port, string data)
+        public static async ValueTask<IResult> SendDataPackage(string address, int port, string data)
         {
             var endPoint = new IPEndPoint(IPAddress.Parse(address), port);
-            UDPClientPool.SendDataPack(endPoint,
+            var ret = await UDPClientPool.SendDataPackAsync(endPoint,
                 new WebProtocol.SendDataPackage(NumberProcessor.StringToBytes(data).Value));
+            if (ret) { return Results.Json(true); }
+            else { return Results.Json(false); }
+        }
+
+        public static async ValueTask<IResult> GetDeviceIDCode(string address, int port)
+        {
+
+
         }
     }
 }
diff --git a/server/src/UdpClientPool.cs b/server/src/UdpClientPool.cs
index d197de9..17d52a4 100644
--- a/server/src/UdpClientPool.cs
+++ b/server/src/UdpClientPool.cs
@@ -6,61 +6,73 @@ class UDPClientPool
 {
     private static IPAddress localhost = IPAddress.Parse("127.0.0.1");
 
-    public static void SendString(IPEndPoint endPoint, string[] stringArray)
+    public static bool SendString(IPEndPoint endPoint, string[] stringArray)
     {
         Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
 
         byte[] sendbuf = Encoding.ASCII.GetBytes(stringArray[0]);
 
-        socket.SendTo(sendbuf, endPoint);
+        var sendLen = socket.SendTo(sendbuf, endPoint);
+        if (sendLen == stringArray[0].Length) { return true; }
+        else { return false; }
     }
 
-    public async static void AsyncSendString(IPEndPoint endPoint, string[] stringArray)
+    public async static ValueTask<bool> SendStringAsync(IPEndPoint endPoint, string[] stringArray)
     {
-        await Task.Run(() => { SendString(endPoint, stringArray); });
+        return await Task.Run(() => { return SendString(endPoint, stringArray); });
     }
 
-    public static void SendBytes(IPEndPoint endPoint, byte[] buf)
+    public static bool SendBytes(IPEndPoint endPoint, byte[] buf)
     {
         Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
-        socket.SendTo(buf, endPoint);
+        var sendLen = socket.SendTo(buf, endPoint);
+        if (sendLen == buf.Length) { return true; }
+        else { return false; }
     }
 
-    public async static void AsyncSendBytes(IPEndPoint endPoint, byte[] buf)
+    public async static ValueTask<bool> SendBytesAsync(IPEndPoint endPoint, byte[] buf)
     {
-        await Task.Run(() => { SendBytes(endPoint, buf); });
+        return await Task.Run(() => { return SendBytes(endPoint, buf); });
     }
 
-    public static void SendAddrPack(IPEndPoint endPoint, WebProtocol.SendAddrPackage pkg)
+    public static bool SendAddrPack(IPEndPoint endPoint, WebProtocol.SendAddrPackage pkg)
     {
         Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
-        socket.SendTo(pkg.ToBytes(), endPoint);
+        var sendBytes = pkg.ToBytes();
+        var sendLen = socket.SendTo(sendBytes, endPoint);
+        if (sendLen == sendBytes.Length) { return true; }
+        else { return false; }
     }
 
-    public async static void AsyncSendAddrPack(IPEndPoint endPoint, WebProtocol.SendAddrPackage pkg)
+    public async static ValueTask<bool> SendAddrPackAsync(IPEndPoint endPoint, WebProtocol.SendAddrPackage pkg)
     {
-        await Task.Run(() => { SendAddrPack(endPoint, pkg); });
+        return await Task.Run(() => { return SendAddrPack(endPoint, pkg); });
     }
 
-    public static void SendDataPack(IPEndPoint endPoint, WebProtocol.SendDataPackage pkg)
+    public static bool SendDataPack(IPEndPoint endPoint, WebProtocol.SendDataPackage pkg)
     {
         Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
-        socket.SendTo(pkg.ToBytes(), endPoint);
+        var sendBytes = pkg.ToBytes();
+        var sendLen = socket.SendTo(sendBytes, endPoint);
+        if (sendLen == sendBytes.Length) { return true; }
+        else { return false; }
     }
 
-    public async static void AsyncSendDataPack(IPEndPoint endPoint, WebProtocol.SendDataPackage pkg)
+    public async static ValueTask<bool> SendDataPackAsync(IPEndPoint endPoint, WebProtocol.SendDataPackage pkg)
     {
-        await Task.Run(() => { SendDataPack(endPoint, pkg); });
+        return await Task.Run(() => { return SendDataPack(endPoint, pkg); });
     }
 
-    public static void SendLocalHost(int port, string[] stringArray)
+    public static bool SendLocalHost(int port, string[] stringArray)
     {
         Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
 
-        byte[] sendbuf = Encoding.ASCII.GetBytes(stringArray[0]);
+        byte[] sendBytes = Encoding.ASCII.GetBytes(stringArray[0]);
         IPEndPoint ep = new IPEndPoint(localhost, port);
 
-        socket.SendTo(sendbuf, ep);
+        var sendLen = socket.SendTo(sendBytes, ep);
+        if (sendLen == sendBytes.Length) { return true; }
+        else { return false; }
     }
 
     public static void CycleSendLocalHost(int times, int sleepMilliSeconds, int port, string[] stringArray)
diff --git a/server/src/UdpServer.cs b/server/src/UdpServer.cs
index 35090bb..740c4ad 100644
--- a/server/src/UdpServer.cs
+++ b/server/src/UdpServer.cs
@@ -2,12 +2,29 @@ using System.Net;
 using System.Net.Sockets;
 using System.Text;
 
+public struct UDPData
+{
+    public DateTime datetime;
+    public string addr;
+    public int port;
+    public byte[] data;
+}
+
+/// <summary>
+/// UDP Server
+/// </summary>
 public class UDPServer
 {
     private int listenPort;
     private UdpClient listener;
     private IPEndPoint groupEP;
+    private Dictionary<string, UDPData> udpData = new Dictionary<string, UDPData>();
 
+    /// <summary>
+    /// Construct a udp server with fixed port
+    /// </summary>
+    /// <param name="port"> Device UDP Port </param>
+    /// <returns> UDPServer class </returns>
     public UDPServer(int port)
     {
         // Construction
@@ -31,9 +48,31 @@ public class UDPServer
     {
         var remoteEP = new IPEndPoint(IPAddress.Any, listenPort);
         byte[] bytes = listener.EndReceive(res, ref remoteEP);
+        var nowtime = DateTime.Now;
 
+        // Handle RemoteEP
+        string remoteStr;
+        if (remoteEP is not null)
+        {
+            var remoteAddress = remoteEP.Address.ToString();
+            var remotePort = remoteEP.Port;
+            // Record UDP Receive Data
+            udpData.Add(remoteAddress, new UDPData()
+            {
+                addr = remoteAddress,
+                port = remotePort,
+                data = bytes,
+                datetime = nowtime,
+            });
+            remoteStr = $"{remoteAddress}:{remotePort}";
+        }
+        else
+        {
+            remoteStr = "Unknown";
+        }
+
+        // Handle Package
         var sign = bytes[0];
-
         string recvData;
         if (sign == (byte)WebProtocol.PackSign.SendAddr)
         {
@@ -60,8 +99,7 @@ public class UDPServer
             recvData = Encoding.ASCII.GetString(bytes, 0, bytes.Length);
         }
 
-        string remoteStr = (remoteEP is null) ? "Unknown" : $"{remoteEP.Address.ToString()}:{remoteEP.Port.ToString()}";
-        Console.WriteLine($"Receive Data from {remoteStr} at {DateTime.Now.ToString()}:");
+        Console.WriteLine($"Receive Data from {remoteStr} at {nowtime.ToString()}:");
         Console.WriteLine($"Original Data: {BitConverter.ToString(bytes).Replace("-", " ")}");
         if (recvData.Length != 0) Console.WriteLine(recvData);
         Console.WriteLine();
@@ -69,6 +107,10 @@ public class UDPServer
         listener.BeginReceive(new AsyncCallback(ReceiveHandler), null);
     }
 
+    /// <summary>
+    /// Start UDP Server
+    /// </summary>
+    /// <returns>None</returns>
     public void Start()
     {
         try
@@ -85,6 +127,10 @@ public class UDPServer
         }
     }
 
+    /// <summary>
+    /// Close UDP Server
+    /// </summary>
+    /// <returns>None</returns>
     public void Stop()
     {
         listener.Close();
diff --git a/server/src/WebProtocol.cs b/server/src/WebProtocol.cs
index 16ff7f9..8b721aa 100644
--- a/server/src/WebProtocol.cs
+++ b/server/src/WebProtocol.cs
@@ -3,26 +3,50 @@ using Newtonsoft.Json;
 
 namespace WebProtocol
 {
+
+    /// <summary> The Sign of Package </summary>
     public enum PackSign
     {
+        /// <summary> Package: Send Read or Write Address to Device </summary>
         SendAddr = 0x00,
+        /// <summary> Package: Send Data Which Update the flash of Device</summary>
         SendData = 0xFF,
+        /// <summary>  </summary>
         RecvData = 0x0F,
+        /// <summary>  </summary>
         RecvResp = 0xF0,
     }
 
+    /// <summary> Package Burst Type </summary>
     public enum BurstType
     {
+        /// <summary> Extended Type </summary>
         ExtendBurst = 0b00,
+        /// <summary> Fixed Type </summary>
         FixedBurst = 0b01,
     }
 
+
+    /// <summary> Package options which to send address to read or write </summary>
+    /// <example> 
+    /// {
+    ///    "burType":0,
+    ///    "commandID":1,
+    /// }
+    /// </example>
     public struct SendAddrPackOptions
     {
+
+        /// <summary> Package Burst Type </summary>
+        [JsonProperty("burstType")]
         public BurstType burstType;
+        /// <example>1</example>
         public byte commandID;
+        /// <example> true </example>
         public bool isWrite;
+        /// <example> 255 </example>
         public byte burstLength;
+        /// <example> 0x10_00_00_00 </example>
         public UInt32 address;
 
         public override string ToString()