选择服务器后自动获取服务器在线人数...

CTZLauncher/CTZLauncher.csproj

@@ -97,6 +97,8 @@
       <SubType>Designer</SubType>
     </ApplicationDefinition>
     <Compile Include="Modules\CTZServer\CTZServer.cs" />
+    <Compile Include="Modules\Minecraft\ServerInfo.cs" />
+    <Compile Include="Tools\MinecraftTools.cs" />
     <Compile Include="Tools\SystemTools.cs" />
     <Compile Include="Tools\UsefulTools.cs" />
     <Compile Include="Tools\ZipTools.cs" />

CTZLauncher/MainWindow.xaml

@@ -42,10 +42,6 @@
             <Image HorizontalAlignment="Left" Height="50" Margin="15,5,0,0" VerticalAlignment="Top" Width="50" Source="ico.ico" RenderTransformOrigin="0.56,0.24"/>
             <Label Content="魔方" HorizontalAlignment="Left" Height="50" Margin="90,5,0,0" VerticalAlignment="Top" Width="74"  HorizontalContentAlignment="Center" VerticalContentAlignment="Center" FontFamily="STXingkai" Foreground="White" FontSize="35" />
         </Grid>
-
-
-
-
         <Grid Name="LoginWindow" Margin="20,60,20,20" Background="White">
             <Grid Height="270" VerticalAlignment="Top">
                 <Grid Margin="20,20,0,0" HorizontalAlignment="Left" Width="400" >
@@ -105,10 +101,6 @@
                 </Grid>
             </Grid>
         </Grid>
-
-
-
-
         <Grid Margin="20,60,20,20" Background="White" x:Name="ServerWindow" Visibility="Hidden">
             <!--Visibility="Hidden"-->
             <Grid HorizontalAlignment="Left" Width="400" Margin="20,20,0,20">

CTZLauncher/MainWindow.xaml.cs

@@ -1,4 +1,5 @@
 using CTZLauncher.Modules.CTZServer;
+using CTZLauncher.Tools;
 using KMCCC.Authentication;
 using KMCCC.Launcher;
 using KMCCC.Tools;
@@ -8,6 +9,7 @@ using System.Collections.Generic;
 using System.Configuration;
 using System.IO;
 using System.Linq;
+using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
@@ -237,6 +239,13 @@ namespace CTZLauncher
             serverinfo.Content = server.Info;
             selserver.Content = server.Name;
             needclient.Content = server.Version;
+            online.Content = "获取中...";
+            MinecraftServer ms = new MinecraftServer(server.Address, server.Port);
+            var info = ms.DoAsync();
+            if (info != null)
+                online.Content = info.Players.Online + "/" + info.Players.Max;
+            else
+                online.Content = "获取失败!";
         }
 
         private void StartGame_Click(object sender, RoutedEventArgs e)

CTZLauncher/Modules/Minecraft/Serverinfo.cs

@@ -0,0 +1,49 @@
+using LitJson;
+using System.Collections.Generic;
+
+namespace CTZLauncher.Modules.Minecraft
+{
+    public class ServerInfo
+    {
+        [JsonPropertyName("description")]
+        public string Description { get; set; }
+        [JsonPropertyName("players")]
+        public Players Players { get; set; }
+        [JsonPropertyName("version")]
+        public Version Version { get; set; }
+        [JsonPropertyName("modinfo")]
+        public ModInfo ModInfo { get; set; }
+    }
+
+    public class ModInfo
+    {
+        [JsonPropertyName("type")]
+        public string Type { get; set; }
+        [JsonPropertyName("modList")]
+        public List<Mod> ModList { get; set; }
+    }
+
+    public class Mod
+    {
+        [JsonPropertyName("modid")]
+        public string Modid { get; set; }
+        [JsonPropertyName("version")]
+        public string Version { get; set; }
+    }
+
+    public class Version
+    {
+        [JsonPropertyName("name")]
+        public string Name { get; set; }
+        [JsonPropertyName("protocol")]
+        public int Protocol { get; set; }
+    }
+
+    public class Players
+    {
+        [JsonPropertyName("max")]
+        public int Max { get; set; }
+        [JsonPropertyName("online")]
+        public int Online { get; set; }
+    }
+}

CTZLauncher/Tools/MinecraftTools.cs

@@ -0,0 +1,98 @@
+using CTZLauncher.Modules.Minecraft;
+using LitJson;
+using System;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading;
+using System.Windows.Threading;
+
+namespace CTZLauncher.Tools
+{
+    public class MinecraftServer
+    {
+        string address;
+        int port;
+        bool finish;
+        ServerInfo serverinfo;
+
+        /// <summary>
+        /// 获取服务器详细信息
+        /// </summary>
+        /// <param name="address">服务器地址</param>
+        /// <param name="port">服务器端口</param>
+        public MinecraftServer(string address, int port)
+        {
+            this.address = address;
+            this.port = port;
+        }
+        /// <summary>
+        /// 模仿C#的Application.Doevent函数。可以适当添加try catch 模块
+        /// </summary>
+        public void DoEvent()
+        {
+            DispatcherFrame frame = new DispatcherFrame();
+            Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background, new DispatcherOperationCallback(ExitFrame), frame);
+            Dispatcher.PushFrame(frame);
+        }
+        public object ExitFrame(object f)
+        {
+            ((DispatcherFrame)f).Continue = false;
+            return null;
+        }
+        /// <summary>
+        /// 异步获取服务器信息
+        /// </summary>
+        /// <returns>服务器信息</returns>
+        public ServerInfo DoAsync()
+        {
+            new Thread(new ThreadStart(GetInfoAsync)).Start();
+            while (finish == false) { DoEvent(); }
+            return serverinfo;
+        }
+        /// <summary>
+        /// 获取服务器信息
+        /// </summary>
+        /// <returns>服务器信息</returns>
+        public ServerInfo Do()
+        {
+            return GetInfo();
+        }
+        public void GetInfoAsync()
+        {
+            finish = false;
+            serverinfo = GetInfo();
+            finish = true;
+        }
+        public ServerInfo GetInfo()
+        {
+            using (Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
+            {
+                try
+                {
+                    client.Connect(address, port);
+                    if (client.Connected)
+                    {
+                        client.Send(new byte[] { 0x0f, 0x00, 0x04, 0x09, 0x31, 0x32, 0x37, 0x2e, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x63, 0xdd, 0x01 });
+                        client.Send(new byte[] { 0x01, 0x00 });
+                        byte[] header = new byte[5];
+                        client.Receive(header, header.Length, SocketFlags.None);
+                        byte[] buffer = new byte[1024];
+                        int recover = client.Receive(buffer, buffer.Length, SocketFlags.None);
+                        byte[] data = new byte[recover];
+                        Array.Copy(buffer, data, recover);
+                        string info = Encoding.UTF8.GetString(data);
+                        return JsonMapper.ToObject<ServerInfo>(info);
+                    }
+                    Console.WriteLine("网络连接失败!");
+                    return null;
+                }
+                catch (Exception e)
+                {
+                    Console.WriteLine(e.Message);
+                    Console.WriteLine(e.StackTrace);
+                    return null;
+                }
+            }
+        }
+    }
+}