Add multi server support

.gitignore

@@ -23,3 +23,6 @@
 hs_err_pid*
 
 /lib/
+.gradle
+.idea
+/build

src/main/java/com/github/jie65535/opencommand/EventListeners.java

@@ -1,8 +1,17 @@
 package com.github.jie65535.opencommand;
 
+import com.github.jie65535.opencommand.socket.SocketClient;
+import com.github.jie65535.opencommand.socket.SocketUtils;
+import com.github.jie65535.opencommand.socket.packet.player.PlayerList;
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.game.player.Player;
 import emu.grasscutter.server.event.game.ReceiveCommandFeedbackEvent;
+import emu.grasscutter.server.event.player.PlayerJoinEvent;
+import emu.grasscutter.server.event.player.PlayerQuitEvent;
 import emu.grasscutter.utils.MessageHandler;
 
+import java.util.ArrayList;
+
 public final class EventListeners {
 
     private static MessageHandler consoleMessageHandler;
@@ -14,4 +23,33 @@ public final class EventListeners {
             consoleMessageHandler.setMessage(event.getMessage());
         }
     }
+
+    public static void onPlayerJoin(PlayerJoinEvent playerJoinEvent) {
+        PlayerList playerList = new PlayerList();
+        playerList.player = Grasscutter.getGameServer().getPlayers().size();
+        ArrayList<String> playerNames = new ArrayList<>();
+        playerNames.add(playerJoinEvent.getPlayer().getNickname());
+        playerList.playerMap.put(playerJoinEvent.getPlayer().getUid(), playerJoinEvent.getPlayer().getNickname());
+        for (Player player : Grasscutter.getGameServer().getPlayers().values()) {
+            playerNames.add(player.getNickname());
+            playerList.playerMap.put(player.getUid(), player.getNickname());
+        }
+        playerList.playerList = playerNames;
+
+        SocketClient.sendPacket(playerList);
+    }
+
+    public static void onPlayerQuit(PlayerQuitEvent playerQuitEvent) {
+        PlayerList playerList = new PlayerList();
+        playerList.player = Grasscutter.getGameServer().getPlayers().size();
+        ArrayList<String> playerNames = new ArrayList<>();
+        for (Player player : Grasscutter.getGameServer().getPlayers().values()) {
+            playerNames.add(player.getNickname());
+            playerList.playerMap.put(player.getUid(), player.getNickname());
+        }
+        playerList.playerMap.remove(playerQuitEvent.getPlayer().getUid());
+        playerNames.remove(playerQuitEvent.getPlayer().getNickname());
+        playerList.playerList = playerNames;
+        SocketClient.sendPacket(playerList);
+    }
 }

src/main/java/com/github/jie65535/opencommand/OpenCommandConfig.java

@@ -22,4 +22,7 @@ public class OpenCommandConfig {
     public int codeExpirationTime_S = 60;
     public int tempTokenExpirationTime_S = 300;
     public int tokenLastUseExpirationTime_H = 48;
+    public int socketPort = 5746;
+    public String socketToken = "";
+    public String socketHost = "127.0.0.1";
 }

src/main/java/com/github/jie65535/opencommand/OpenCommandOnlyHttpHandler.java

@@ -0,0 +1,200 @@
+/*
+ * gc-opencommand
+ * Copyright (C) 2022  jie65535
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.github.jie65535.opencommand;
+
+import com.github.jie65535.opencommand.json.JsonRequest;
+import com.github.jie65535.opencommand.json.JsonResponse;
+import com.github.jie65535.opencommand.socket.SocketData;
+import com.github.jie65535.opencommand.socket.SocketDataWait;
+import com.github.jie65535.opencommand.socket.SocketServer;
+import com.github.jie65535.opencommand.socket.packet.HttpPacket;
+import com.github.jie65535.opencommand.socket.packet.player.Player;
+import com.github.jie65535.opencommand.socket.packet.player.PlayerEnum;
+import emu.grasscutter.command.CommandMap;
+import emu.grasscutter.server.http.Router;
+import emu.grasscutter.utils.Crypto;
+import emu.grasscutter.utils.MessageHandler;
+import emu.grasscutter.utils.Utils;
+import express.Express;
+import express.http.Request;
+import express.http.Response;
+import io.javalin.Javalin;
+import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.FutureTask;
+
+public final class OpenCommandOnlyHttpHandler implements Router {
+
+    @Override
+    public void applyRoutes(Express express, Javalin javalin) {
+        express.post("/opencommand/api", OpenCommandOnlyHttpHandler::handle);
+    }
+
+    private static final Map<String, Integer> clients = new HashMap<>();
+    private static final Map<String, Date> tokenExpireTime = new HashMap<>();
+    private static final Map<String, Integer> codes = new HashMap<>();
+    private static final Int2ObjectMap<Date> codeExpireTime = new Int2ObjectOpenHashMap<>();
+
+    public static void handle(Request request, Response response) {
+        // Trigger cleanup action
+        cleanupExpiredData();
+        var plugin = OpenCommandPlugin.getInstance();
+        var config = plugin.getConfig();
+        var now = new Date();
+
+        var req = request.body(JsonRequest.class);
+        response.type("application/json");
+        if (req.action.equals("sendCode")) {
+            int playerId = (int) req.data;
+            var player = SocketData.getPlayer(playerId);
+            if (player == null) {
+                response.json(new JsonResponse(404, "Player Not Found."));
+            } else {
+                if (codeExpireTime.containsKey(playerId)) {
+                    var expireTime = codeExpireTime.get(playerId);
+                    if (now.before(expireTime)) {
+                        response.json(new JsonResponse(403, "Requests are too frequent"));
+                        return;
+                    }
+                }
+
+                String token = req.token;
+                if (token == null || token.isEmpty())
+                    token = Utils.bytesToHex(Crypto.createSessionKey(32));
+                int code = Utils.randomRange(1000, 9999);
+                codeExpireTime.put(playerId, new Date(now.getTime() + config.codeExpirationTime_S * 1000L));
+                tokenExpireTime.put(token, new Date(now.getTime() + config.tempTokenExpirationTime_S * 1000L));
+                codes.put(token, code);
+                clients.put(token, playerId);
+                Player.dropMessage(playerId, "[Open Command] Verification code: " + code);
+                response.json(new JsonResponse(token));
+            }
+            return;
+        } else if (req.action.equals("ping")) {
+            response.json(new JsonResponse());
+            return;
+        }
+
+        // token is required
+        if (req.token == null || req.token.isEmpty()) {
+            response.json(new JsonResponse(401, "Unauthorized"));
+            return;
+        }
+        var isConsole = req.token.equals(config.consoleToken);
+        if (!isConsole && !clients.containsKey(req.token)) {
+            response.json(new JsonResponse(401, "Unauthorized"));
+            return;
+        }
+
+        if (isConsole) {
+            if (req.action.equals("verify")) {
+                response.json(new JsonResponse());
+                return;
+            } else if (req.action.equals("command")) {
+                //noinspection SynchronizationOnLocalVariableOrMethodParameter
+                synchronized (plugin) {
+                    try {
+                        plugin.getLogger().info(String.format("IP: %s run command in console > %s", request.ip(), req.data));
+                        var resultCollector = new MessageHandler();
+                        EventListeners.setConsoleMessageHandler(resultCollector);
+                        CommandMap.getInstance().invoke(null, null, req.data.toString());
+                        response.json(new JsonResponse(resultCollector.getMessage()));
+                    } catch (Exception e) {
+                        plugin.getLogger().warn("Run command failed.", e);
+                        EventListeners.setConsoleMessageHandler(null);
+                        response.json(new JsonResponse(500, "error", e.getLocalizedMessage()));
+                    }
+                }
+                return;
+            }
+        } else if (codes.containsKey(req.token)) {
+            if (req.action.equals("verify")) {
+                if (codes.get(req.token).equals(req.data)) {
+                    codes.remove(req.token);
+                    // update token expire time
+                    tokenExpireTime.put(req.token, new Date(now.getTime() + config.tokenLastUseExpirationTime_H * 60L * 60L * 1000L));
+                    response.json(new JsonResponse());
+                    plugin.getLogger().info(String.format("Player %d has passed the verification, ip: %s", clients.get(req.token), request.ip()));
+                } else {
+                    response.json(new JsonResponse(400, "Verification failed"));
+                }
+                return;
+            }
+        } else {
+            if (req.action.equals("command")) {
+                SocketDataWait<HttpPacket> socketDataWait = new SocketDataWait<>(1000L * 10L) {
+                    @Override
+                    public void run() {}
+
+                    @Override
+                    public HttpPacket initData(HttpPacket data) {
+                        return data;
+                    }
+
+                    @Override
+                    public void timeout() {
+                        response.json(new JsonResponse(408, "Wait server timeout"));
+                    }
+                };
+
+                // update token expire time
+                tokenExpireTime.put(req.token, new Date(now.getTime() + config.tokenLastUseExpirationTime_H * 60L * 60L * 1000L));
+                var playerId = clients.get(req.token);
+                var command = req.data.toString();
+                var player = new Player();
+                player.uid = playerId;
+                player.type = PlayerEnum.RunCommand;
+                player.data = command;
+
+                if (!SocketServer.sendUidPacket(playerId, player, socketDataWait)) {
+                    response.json(new JsonResponse(404, "Player Not Found."));
+                    return;
+                }
+
+
+                HttpPacket httpPacket = socketDataWait.getData();
+                if (httpPacket == null) {
+                    response.json(new JsonResponse(500, "error", "Server connect failed."));
+                    return;
+                }
+                response.json(new JsonResponse(httpPacket.code, httpPacket.message));
+                return;
+            }
+        }
+        response.json(new JsonResponse(403, "forbidden"));
+    }
+
+    private static void cleanupExpiredData() {
+        var now = new Date();
+        codeExpireTime.int2ObjectEntrySet().removeIf(entry -> entry.getValue().before(now));
+
+        var it = tokenExpireTime.entrySet().iterator();
+        while (it.hasNext()) {
+            var entry = it.next();
+            if (entry.getValue().before(now)) {
+                it.remove();
+                // remove expired token
+                clients.remove(entry.getKey());
+            }
+        }
+    }
+}

src/main/java/com/github/jie65535/opencommand/OpenCommandPlugin.java

@@ -17,11 +17,15 @@
  */
 package com.github.jie65535.opencommand;
 
+import com.github.jie65535.opencommand.socket.SocketClient;
+import com.github.jie65535.opencommand.socket.SocketServer;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.plugin.Plugin;
 import emu.grasscutter.server.event.EventHandler;
 import emu.grasscutter.server.event.HandlerPriority;
 import emu.grasscutter.server.event.game.ReceiveCommandFeedbackEvent;
+import emu.grasscutter.server.event.player.PlayerJoinEvent;
+import emu.grasscutter.server.event.player.PlayerQuitEvent;
 
 import java.io.File;
 import java.io.FileReader;
@@ -47,7 +51,21 @@ public final class OpenCommandPlugin extends Plugin {
                 .priority(HandlerPriority.HIGH)
                 .listener(EventListeners::onCommandResponse)
                 .register(this);
-        getHandle().addRouter(OpenCommandHandler.class);
+        if (Grasscutter.getConfig().server.runMode == Grasscutter.ServerRunMode.GAME_ONLY) {
+            // 仅运行游戏服务器时注册玩家加入和离开事件
+            new EventHandler<>(PlayerJoinEvent.class)
+                    .priority(HandlerPriority.HIGH)
+                    .listener(EventListeners::onPlayerJoin)
+                    .register(this);
+            new EventHandler<>(PlayerQuitEvent.class)
+                    .priority(HandlerPriority.HIGH)
+                    .listener(EventListeners::onPlayerQuit)
+                    .register(this);
+        } else if (Grasscutter.getConfig().server.runMode == Grasscutter.ServerRunMode.DISPATCH_ONLY) {
+            getHandle().addRouter(OpenCommandOnlyHttpHandler.class);
+        } else {
+            getHandle().addRouter(OpenCommandHandler.class);
+        }
         getLogger().info("[OpenCommand] Enabled");
     }
 
@@ -79,5 +97,21 @@ public final class OpenCommandPlugin extends Plugin {
                 getLogger().error("There was an error while trying to load the configuration from config.json. Please make sure that there are no syntax errors. If you want to start with a default configuration, delete your existing config.json.");
             }
         }
+        // 启动Socket
+        startSocket();
+    }
+
+    private void startSocket() {
+        if (Grasscutter.getConfig().server.runMode == Grasscutter.ServerRunMode.GAME_ONLY) {
+            getLogger().info("[OpenCommand] Starting socket client...");
+            SocketClient.connectServer();
+        } else if (Grasscutter.getConfig().server.runMode == Grasscutter.ServerRunMode.DISPATCH_ONLY) {
+            getLogger().info("[OpenCommand] Starting socket server...");
+            try {
+                SocketServer.startServer();
+            } catch (IOException e) {
+                getLogger().error("Unable to start socket server.", e);
+            }
+        }
     }
 }

src/main/java/com/github/jie65535/opencommand/socket/SocketClient.java

@@ -0,0 +1,185 @@
+package com.github.jie65535.opencommand.socket;
+
+import com.github.jie65535.opencommand.OpenCommandConfig;
+import com.github.jie65535.opencommand.OpenCommandPlugin;
+import com.github.jie65535.opencommand.socket.packet.BasePacket;
+import com.github.jie65535.opencommand.socket.packet.HeartBeat;
+import com.github.jie65535.opencommand.socket.packet.HttpPacket;
+import com.github.jie65535.opencommand.socket.packet.Packet;
+import com.github.jie65535.opencommand.socket.packet.player.Player;
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.command.CommandMap;
+import emu.grasscutter.utils.MessageHandler;
+import org.slf4j.Logger;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.Socket;
+import java.util.Timer;
+import java.util.TimerTask;
+
+// Socket 客户端
+public class SocketClient {
+    public static ClientThread clientThread;
+
+    public static Logger mLogger;
+
+    public static Timer timer;
+
+    public static boolean connect = false;
+
+    // 连接服务器
+    public static void connectServer() {
+        OpenCommandConfig config = OpenCommandPlugin.getInstance().getConfig();
+        mLogger = OpenCommandPlugin.getInstance().getLogger();
+        clientThread = new ClientThread(config.socketHost, config.socketPort);
+
+        if (timer != null) {
+            timer.cancel();
+        }
+        timer = new Timer();
+        timer.schedule(new SendHeartBeatPacket(), 500);
+    }
+
+    // 发送数据包
+    public static boolean sendPacket(BasePacket packet) {
+        var p = SocketUtils.getPacket(packet);
+        if (!clientThread.sendPacket(p)) {
+            mLogger.warn("[OpenCommand] Send packet to server failed");
+            mLogger.info("[OpenCommand] Reconnect to server");
+            connect = false;
+            connectServer();
+            return false;
+        }
+        return true;
+    }
+
+    // 发送数据包带数据包ID
+    public static boolean sendPacket(BasePacket packet, String packetID) {
+        if (!clientThread.sendPacket(SocketUtils.getPacketAndPackID(packet, packetID))) {
+            mLogger.warn("[OpenCommand] Send packet to server failed");
+            mLogger.info("[OpenCommand] Reconnect to server");
+            connect = false;
+            connectServer();
+            return false;
+        }
+        return true;
+    }
+
+    // 心跳包发送
+    private static class SendHeartBeatPacket extends TimerTask {
+        @Override
+        public void run() {
+            if (connect) {
+                sendPacket(new HeartBeat("Pong"));
+            }
+        }
+    }
+
+    // 数据包接收
+    private static class ReceiveThread extends Thread {
+        private InputStream is;
+        private String token;
+
+        public ReceiveThread(Socket socket) {
+            token = OpenCommandPlugin.getInstance().getConfig().socketToken;
+            try {
+                is = socket.getInputStream();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+            start();
+        }
+
+        @Override
+        public void run() {
+            //noinspection InfiniteLoopStatement
+            while (true) {
+                String data = SocketUtils.readString(is);
+                Packet packet = Grasscutter.getGsonFactory().fromJson(data, Packet.class);
+                if (packet.token.equals(token)) {
+                    switch (packet.type) {
+                        // 玩家类
+                        case Player:
+                            var player = Grasscutter.getGsonFactory().fromJson(packet.data, Player.class);
+                            switch (player.type) {
+                                // 运行命令
+                                case RunCommand -> {
+                                    var command = player.data;
+                                    var playerData = OpenCommandPlugin.getInstance().getServer().getPlayerByUid(player.uid);
+                                    if (playerData == null) {
+                                        sendPacket(new HttpPacket(404, "Player not found."), packet.packetID);
+                                        return;
+                                    }
+                                    // Player MessageHandler do not support concurrency
+                                    //noinspection SynchronizationOnLocalVariableOrMethodParameter
+                                    synchronized (playerData) {
+                                        try {
+                                            var resultCollector = new MessageHandler();
+                                            playerData.setMessageHandler(resultCollector);
+                                            CommandMap.getInstance().invoke(playerData, playerData, command);
+                                            sendPacket(new HttpPacket(200, resultCollector.getMessage()), packet.packetID);
+                                        } catch (Exception e) {
+                                            OpenCommandPlugin.getInstance().getLogger().warn("Run command failed.", e);
+                                            sendPacket(new HttpPacket(500, "error", e.getLocalizedMessage()), packet.packetID);
+                                        } finally {
+                                            playerData.setMessageHandler(null);
+                                        }
+                                    }
+                                }
+                                // 发送信息
+                                case DropMessage -> {
+                                    var playerData = OpenCommandPlugin.getInstance().getServer().getPlayerByUid(player.uid);
+                                    if (playerData == null) {
+                                        return;
+                                    }
+                                    playerData.dropMessage(player.data);
+                                }
+                            }
+                            break;
+                    }
+                }
+            }
+        }
+    }
+
+    // 客户端连接线程
+    private static class ClientThread extends Thread {
+        private final String ip;
+        private final int port;
+        private Socket socket;
+        private OutputStream os;
+
+        public ClientThread(String ip, int port) {
+            this.ip = ip;
+            this.port = port;
+            start();
+        }
+
+        public Socket getSocket() {
+            return socket;
+        }
+
+        public boolean sendPacket(String string) {
+            return SocketUtils.writeString(os, string);
+        }
+
+        @Override
+        public void run() {
+            try {
+                socket = new Socket(ip, port);
+                connect = true;
+                os = socket.getOutputStream();
+                mLogger.info("Connect to server: " + ip + ":" + port);
+                new ReceiveThread(socket);
+            } catch (IOException e) {
+                connect = false;
+                mLogger.warn("Connect to server failed: " + ip + ":" + port);
+                mLogger.warn("[OpenCommand] Reconnect to server");
+                connectServer();
+                throw new RuntimeException(e);
+            }
+        }
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/SocketData.java

@@ -0,0 +1,30 @@
+package com.github.jie65535.opencommand.socket;
+
+import com.github.jie65535.opencommand.socket.packet.player.PlayerList;
+
+import java.util.HashMap;
+import java.util.concurrent.atomic.AtomicReference;
+
+// Socket 数据保存
+public class SocketData {
+    public static HashMap<String, PlayerList> playerList = new HashMap<>();
+
+    public static PlayerList getPlayer(int uid) {
+        for (PlayerList player : playerList.values()) {
+            if (player.playerMap.get(uid) != null) {
+                return player;
+            }
+        }
+        return null;
+    }
+
+    public static String getPlayerInServer(int uid) {
+        AtomicReference<String> ret = new AtomicReference<>();
+        playerList.forEach((key, value) -> {
+            if (value.playerMap.get(uid) != null) {
+                ret.set(key);
+            }
+        });
+        return ret.get();
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/SocketDataWait.java

@@ -0,0 +1,60 @@
+package com.github.jie65535.opencommand.socket;
+
+// 异步等待数据返回
+public abstract class SocketDataWait<T> extends Thread {
+    public T data;
+    public long timeout;
+    public long time;
+    public String uid;
+
+    /**
+     * 异步等待数据返回
+     * @param timeout 超时时间
+     */
+    public SocketDataWait(long timeout) {
+        this.timeout = timeout;
+        start();
+    }
+
+    public abstract void run();
+
+    /**
+     * 数据处理
+     * @param data 数据
+     * @return 处理后的数据
+     */
+    public abstract T initData(T data);
+
+    /**
+     * 超时回调
+     */
+    public abstract void timeout();
+
+    /**
+     * 异步设置数据
+     * @param data 数据
+     */
+    public void setData(Object data) {
+        this.data = initData((T) data);
+    }
+
+    /**
+     * 获取异步数据（此操作会一直堵塞直到获取到数据）
+     * @return 数据
+     */
+    public T getData() {
+        while (data == null) {
+            try {
+                time += 100;
+                Thread.sleep(100);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+            if (time > timeout) {
+                timeout();
+                return null;
+            }
+        }
+        return data;
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/SocketServer.java

@@ -0,0 +1,204 @@
+package com.github.jie65535.opencommand.socket;
+
+import com.github.jie65535.opencommand.OpenCommandPlugin;
+import com.github.jie65535.opencommand.socket.packet.BasePacket;
+import com.github.jie65535.opencommand.socket.packet.HttpPacket;
+import com.github.jie65535.opencommand.socket.packet.Packet;
+import com.github.jie65535.opencommand.socket.packet.player.PlayerList;
+import emu.grasscutter.Grasscutter;
+import org.slf4j.Logger;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.HashMap;
+import java.util.Timer;
+import java.util.TimerTask;
+
+// Socket 服务器
+public class SocketServer {
+    // 客户端超时时间
+    private static final int TIMEOUT = 5000;
+    private static final HashMap<String, ClientThread> clientList = new HashMap<>();
+
+    private static final HashMap<String, Integer> clientTimeout = new HashMap<>();
+
+    private static Logger mLogger;
+
+    public static void startServer() throws IOException {
+        int port = OpenCommandPlugin.getInstance().getConfig().socketPort;
+        mLogger = OpenCommandPlugin.getInstance().getLogger();
+        new Timer().schedule(new SocketClientCheck(), 500);
+        new WaitClientConnect(port);
+    }
+
+    // 向全部客户端发送数据
+    public static boolean sendAllPacket(BasePacket packet) {
+        var p = SocketUtils.getPacket(packet);
+        HashMap<String, ClientThread>  old = (HashMap<String, ClientThread>) clientList.clone();
+        for (var client : old.entrySet()) {
+            if (!client.getValue().sendPacket(p)) {
+                mLogger.warn("[OpenCommand] Send packet to client {} failed", client.getKey());
+                clientList.remove(client.getKey());
+            }
+        }
+        return false;
+    }
+
+    // 根据地址发送到相应的客户端
+    public static boolean sendPacket(String address, BasePacket packet) {
+        var p = SocketUtils.getPacket(packet);
+        var client = clientList.get(address);
+        if (client != null) {
+            if (client.sendPacket(p)) {
+                return true;
+            }
+            mLogger.warn("[OpenCommand] Send packet to client {} failed", address);
+            clientList.remove(address);
+        }
+        return false;
+    }
+
+    // 根据Uid发送到相应的客户端异步返回数据
+    public static boolean sendUidPacket(Integer playerId, BasePacket player, SocketDataWait<?> socketDataWait) {
+        var p = SocketUtils.getPacketAndPackID(player);
+        var clientID = SocketData.getPlayerInServer(playerId);
+        if (clientID == null) return false;
+        var client = clientList.get(clientID);
+        if (client != null) {
+            socketDataWait.uid = p.get(0);
+            if (!client.sendPacket(p.get(1), socketDataWait)) {
+                mLogger.warn("[OpenCommand] Send packet to client {} failed", clientID);
+                clientList.remove(clientID);
+                return false;
+            }
+            return true;
+        }
+        return false;
+    }
+
+    // 客户端超时检测
+    private static class SocketClientCheck extends TimerTask {
+        @Override
+        public void run() {
+            HashMap<String, Integer> old = (HashMap<String, Integer>) clientTimeout.clone();
+            for (var client : old.entrySet()) {
+                var clientID = client.getKey();
+                var clientTime = client.getValue();
+                if (clientTime > TIMEOUT) {
+                    mLogger.info("Client {} timeout, disconnect.", clientID);
+                    clientList.remove(clientID);
+                    clientTimeout.remove(clientID);
+                } else {
+                    clientTimeout.put(clientID, clientTime + 500);
+                }
+            }
+        }
+    }
+
+    // 客户端数据包处理
+    private static class ClientThread extends Thread {
+        private final Socket socket;
+        private InputStream is;
+        private OutputStream os;
+        private final String address;
+        private final String token;
+
+        private final HashMap<String, SocketDataWait<?>> socketDataWaitList = new HashMap<>();
+
+        public ClientThread(Socket accept) {
+            socket = accept;
+            address = socket.getInetAddress() + ":" + socket.getPort();
+            token = OpenCommandPlugin.getInstance().getConfig().socketToken;
+            try {
+                is = accept.getInputStream();
+                os = accept.getOutputStream();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+            start();
+        }
+
+        public Socket getSocket() {
+            return socket;
+        }
+
+        // 发送数据包
+        public boolean sendPacket(String packet) {
+            return SocketUtils.writeString(os, packet);
+        }
+
+        // 发送异步数据包
+        public boolean sendPacket(String packet, SocketDataWait<?> socketDataWait) {
+            if (SocketUtils.writeString(os, packet)) {
+                socketDataWaitList.put(socketDataWait.uid, socketDataWait);
+                return true;
+            } else {
+                return false;
+            }
+        }
+
+        @Override
+        public void run() {
+            // noinspection InfiniteLoopStatement
+            while (true) {
+                String data = SocketUtils.readString(is);
+                Packet packet = Grasscutter.getGsonFactory().fromJson(data, Packet.class);
+                if (packet.token.equals(token)) {
+                    switch (packet.type) {
+                        // 缓存玩家列表
+                        case PlayerList -> {
+                            PlayerList playerList = Grasscutter.getGsonFactory().fromJson(packet.data, PlayerList.class);
+                            SocketData.playerList.put(address, playerList);
+                        }
+                        // Http信息返回
+                        case HttpPacket -> {
+                            HttpPacket httpPacket = Grasscutter.getGsonFactory().fromJson(packet.data, HttpPacket.class);
+                            var socketWait = socketDataWaitList.get(packet.packetID);
+                            if (socketWait == null) {
+                                mLogger.error("HttpPacket: " + packet.packetID + " not found");
+                                return;
+                            }
+                            socketWait.setData(httpPacket);
+                            socketDataWaitList.remove(packet.packetID);
+                        }
+                        // 心跳包
+                        case HeartBeat -> {
+                            clientTimeout.put(address, 0);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // 等待客户端连接
+    private static class WaitClientConnect extends Thread {
+        ServerSocket socketServer;
+
+        public WaitClientConnect(int port) throws IOException {
+            socketServer = new ServerSocket(port);
+            start();
+        }
+
+        @Override
+        public void run() {
+            mLogger.info("Start socket server on port " + socketServer.getLocalPort());
+            // noinspection InfiniteLoopStatement
+            while (true) {
+                try {
+                    Socket accept = socketServer.accept();
+                    String address = accept.getInetAddress() + ":" + accept.getPort();
+                    mLogger.info("Client connect: " + address);
+                    ClientThread clientThread = new ClientThread(accept);
+                    clientList.put(address, clientThread);
+                    clientTimeout.put(address, 0);
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/SocketUtils.java

@@ -0,0 +1,139 @@
+package com.github.jie65535.opencommand.socket;
+
+import com.github.jie65535.opencommand.OpenCommandPlugin;
+import com.github.jie65535.opencommand.socket.packet.BasePacket;
+import com.github.jie65535.opencommand.socket.packet.Packet;
+import emu.grasscutter.Grasscutter;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
+// Socket 工具类
+public class SocketUtils {
+
+    /**
+     * 获取打包后的数据包
+     * @param bPacket 数据包
+     * @return 打包后的数据包
+     */
+    public static String getPacket(BasePacket bPacket) {
+        Packet packet = new Packet();
+        packet.token = OpenCommandPlugin.getInstance().getConfig().socketToken;
+        packet.type = bPacket.getType();
+        packet.data = bPacket.getPacket();
+        packet.packetID = UUID.randomUUID().toString();
+        return Grasscutter.getGsonFactory().toJson(packet);
+    }
+
+    /**
+     * 获取打包后的数据包
+     * @param bPacket BasePacket
+     * @return list[0] 是包ID, list[1] 是数据包
+     */
+    public static List<String> getPacketAndPackID(BasePacket bPacket) {
+        Packet packet = new Packet();
+        packet.token = OpenCommandPlugin.getInstance().getConfig().socketToken;
+        packet.type = bPacket.getType();
+        packet.data = bPacket.getPacket();
+        packet.packetID = UUID.randomUUID().toString();
+
+        List<String> list = new ArrayList<>();
+        list.add(packet.packetID);
+        list.add(Grasscutter.getGsonFactory().toJson(packet));
+        return list;
+    }
+
+    /**
+     * 获取打包后的数据包
+     * @param bPacket 数据包
+     * @param packetID 数据包ID
+     * @return 打包后的数据包
+     */
+    public static String getPacketAndPackID(BasePacket bPacket, String packetID) {
+        Packet packet = new Packet();
+        packet.token = OpenCommandPlugin.getInstance().getConfig().socketToken;
+        packet.type = bPacket.getType();
+        packet.data = bPacket.getPacket();
+        packet.packetID = packetID;
+        return Grasscutter.getGsonFactory().toJson(packet);
+    }
+
+    /**
+     * 读整数
+     * @param is 输入流
+     * @return 整数
+     */
+    public static int readInt(InputStream is) {
+        int[] values = new int[4];
+        try {
+            for (int i = 0; i < 4; i++) {
+                values[i] = is.read();
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return values[0]<<24 | values[1]<<16 | values[2]<<8 | values[3];
+    }
+
+    /**
+     * 写整数
+     * @param os 输出流
+     * @param value 整数
+     */
+    public static void writeInt(OutputStream os, int value) {
+        int[] values = new int[4];
+        values[0] = (value>>24)&0xFF;
+        values[1] = (value>>16)&0xFF;
+        values[2] = (value>>8)&0xFF;
+        values[3] = (value)&0xFF;
+
+        try{
+            for (int i = 0; i < 4; i++) {
+                os.write(values[i]);
+            }
+        }catch (IOException e){
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * 读字符串
+     * @param is 输入流
+     * @return 字符串
+     */
+    public static String readString(InputStream is) {
+        int len = readInt(is);
+        byte[] sByte = new byte[len];
+        try {
+            is.read(sByte);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        String s = new String(sByte);
+        return s;
+    }
+
+    /**
+     * 写字符串
+     * @param os 输出流
+     * @param s 字符串
+     * @return 是否成功
+     */
+    public static boolean writeString(OutputStream os,String s) {
+        try {
+            byte[] bytes = s.getBytes();
+            int len = bytes.length;
+            writeInt(os,len);
+            os.write(bytes);
+            return true;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return false;
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/packet/BasePacket.java

@@ -0,0 +1,8 @@
+package com.github.jie65535.opencommand.socket.packet;
+
+// 基本数据包
+public abstract class BasePacket {
+    public abstract String getPacket();
+
+    public abstract PacketEnum getType();
+}

src/main/java/com/github/jie65535/opencommand/socket/packet/HeartBeat.java

@@ -0,0 +1,22 @@
+package com.github.jie65535.opencommand.socket.packet;
+
+import emu.grasscutter.Grasscutter;
+
+// 心跳包
+public class HeartBeat extends BasePacket {
+    public String ping;
+
+    public HeartBeat(String ping) {
+        this.ping = ping;
+    }
+
+    @Override
+    public String getPacket() {
+        return Grasscutter.getGsonFactory().toJson(this);
+    }
+
+    @Override
+    public PacketEnum getType() {
+        return PacketEnum.HeartBeat;
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/packet/HttpPacket.java

@@ -0,0 +1,36 @@
+package com.github.jie65535.opencommand.socket.packet;
+
+import emu.grasscutter.Grasscutter;
+
+// http返回数据
+public class HttpPacket extends BasePacket {
+    public int code;
+    public String message;
+    public String data;
+
+    public HttpPacket(int code, String message, String data) {
+        this.code = code;
+        this.message = message;
+        this.data = data;
+    }
+
+    public HttpPacket(int code, String message) {
+        this.code = code;
+        this.message = message;
+    }
+
+    @Override
+    public String getPacket() {
+        return Grasscutter.getGsonFactory().toJson(this);
+    }
+
+    @Override
+    public PacketEnum getType() {
+        return PacketEnum.HttpPacket;
+    }
+
+    @Override
+    public String toString() {
+        return "HttpPacket [code=" + code + ", message=" + message + ", data=" + data + "]";
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/packet/Packet.java

@@ -0,0 +1,14 @@
+package com.github.jie65535.opencommand.socket.packet;
+
+// 数据包结构
+public class Packet {
+    public String token;
+    public PacketEnum type;
+    public String data;
+    public String packetID;
+
+    @Override
+    public String toString() {
+        return "Packet [token=" + token + ", type=" + type + ", data=" + data + ", packetID=" + packetID + "]";
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/packet/PacketEnum.java

@@ -0,0 +1,9 @@
+package com.github.jie65535.opencommand.socket.packet;
+
+// 数据包类型列表
+public enum PacketEnum {
+    PlayerList,
+    Player,
+    HttpPacket,
+    HeartBeat
+}

src/main/java/com/github/jie65535/opencommand/socket/packet/player/Player.java

@@ -0,0 +1,31 @@
+package com.github.jie65535.opencommand.socket.packet.player;
+
+import com.github.jie65535.opencommand.socket.SocketServer;
+import com.github.jie65535.opencommand.socket.packet.BasePacket;
+import com.github.jie65535.opencommand.socket.packet.PacketEnum;
+import emu.grasscutter.Grasscutter;
+
+// 玩家操作类
+public class Player extends BasePacket {
+    public PlayerEnum type;
+    public int uid;
+    public String data;
+
+    @Override
+    public String getPacket() {
+        return Grasscutter.getGsonFactory().toJson(this);
+    }
+
+    @Override
+    public PacketEnum getType() {
+        return PacketEnum.Player;
+    }
+
+    public static void dropMessage(int uid, String str) {
+        Player p = new Player();
+        p.type = PlayerEnum.DropMessage;
+        p.uid = uid;
+        p.data = str;
+        SocketServer.sendAllPacket(p);
+    }
+}

src/main/java/com/github/jie65535/opencommand/socket/packet/player/PlayerEnum.java

@@ -0,0 +1,7 @@
+package com.github.jie65535.opencommand.socket.packet.player;
+
+// 玩家操作列表
+public enum PlayerEnum {
+    DropMessage,
+    RunCommand
+}

src/main/java/com/github/jie65535/opencommand/socket/packet/player/PlayerList.java

@@ -0,0 +1,28 @@
+package com.github.jie65535.opencommand.socket.packet.player;
+
+import com.github.jie65535.opencommand.socket.packet.BasePacket;
+import com.github.jie65535.opencommand.socket.packet.PacketEnum;
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.game.player.Player;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+// 玩家列表信息
+public class PlayerList extends BasePacket {
+    public int player = -1;
+    public List<String> playerList = new ArrayList<>();
+    public Map<Integer, String> playerMap = new HashMap<>();
+
+    @Override
+    public String getPacket() {
+        return Grasscutter.getGsonFactory().toJson(this);
+    }
+
+    @Override
+    public PacketEnum getType() {
+        return PacketEnum.PlayerList;
+    }
+}