feat（iot）：统一优化网关协议的资源清理逻辑，主要是 stop0

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/device/IotDeviceModbusConfigServiceImpl.java

@@ -70,7 +70,6 @@ public class IotDeviceModbusConfigServiceImpl implements IotDeviceModbusConfigSe
         return modbusConfigMapper.selectList(listReqDTO);
     }
 
-    // TODO @AI：还是希望在 IotDeviceModbusConfigSaveReqVO 里，通过 validator 校验？！或者通过 group 来处理？
     private void validateModbusConfigByProtocolType(IotDeviceModbusConfigSaveReqVO saveReqVO, String protocolType) {
         IotProtocolTypeEnum protocolTypeEnum = IotProtocolTypeEnum.of(protocolType);
         if (protocolTypeEnum == null) {

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/coap/IotCoapProtocol.java

@@ -64,17 +64,13 @@ public class IotCoapProtocol implements IotProtocol {
     /**
      * 下行消息订阅者
      */
-    private final IotCoapDownstreamSubscriber downstreamSubscriber;
+    private IotCoapDownstreamSubscriber downstreamSubscriber;
 
     public IotCoapProtocol(ProtocolProperties properties) {
         IotCoapConfig coapConfig = properties.getCoap();
         Assert.notNull(coapConfig, "CoAP 协议配置（coap）不能为空");
         this.properties = properties;
         this.serverId = IotDeviceMessageUtils.generateServerId(properties.getPort());
-
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        this.downstreamSubscriber = new IotCoapDownstreamSubscriber(this, messageBus);
     }
 
     @Override
@@ -94,9 +90,9 @@ public class IotCoapProtocol implements IotProtocol {
             return;
         }
 
-        IotCoapConfig coapConfig = properties.getCoap();
         try {
             // 1.1 创建 CoAP 配置
+            IotCoapConfig coapConfig = properties.getCoap();
             Configuration config = Configuration.createStandardWithoutFile();
             config.set(CoapConfig.COAP_PORT, properties.getPort());
             config.set(CoapConfig.MAX_MESSAGE_SIZE, coapConfig.getMaxMessageSize());
@@ -131,13 +127,12 @@ public class IotCoapProtocol implements IotProtocol {
                     getId(), properties.getPort(), serverId);
 
             // 4. 启动下行消息订阅者
+            IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+            this.downstreamSubscriber = new IotCoapDownstreamSubscriber(this, messageBus);
             this.downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT CoAP 协议 {} 启动失败]", getId(), e);
-            if (coapServer != null) {
+            stop0();
-                coapServer.destroy();
-                coapServer = null;
-            }
             throw e;
         }
     }
@@ -147,12 +142,19 @@ public class IotCoapProtocol implements IotProtocol {
         if (!running) {
             return;
         }
+        stop0();
+    }
+
+    private void stop0() {
         // 1. 停止下行消息订阅者
-        try {
+        if (downstreamSubscriber != null) {
-            downstreamSubscriber.stop();
+            try {
-            log.info("[stop][IoT CoAP 协议 {} 下行消息订阅者已停止]", getId());
+                downstreamSubscriber.stop();
-        } catch (Exception e) {
+                log.info("[stop][IoT CoAP 协议 {} 下行消息订阅者已停止]", getId());
-            log.error("[stop][IoT CoAP 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            } catch (Exception e) {
+                log.error("[stop][IoT CoAP 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            }
+            downstreamSubscriber = null;
         }
 
         // 2. 关闭 CoAP 服务器

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/emqx/IotEmqxProtocol.java

@@ -90,7 +90,7 @@ public class IotEmqxProtocol implements IotProtocol {
     /**
      * 下行消息订阅者
      */
-    private final IotEmqxDownstreamSubscriber downstreamSubscriber;
+    private IotEmqxDownstreamSubscriber downstreamSubscriber;
 
     public IotEmqxProtocol(ProtocolProperties properties) {
         Assert.notNull(properties, "协议实例配置不能为空");
@@ -101,10 +101,6 @@ public class IotEmqxProtocol implements IotProtocol {
                 "MQTT 连接超时时间(emqx.connect-timeout-seconds)不能为空");
         this.serverId = IotDeviceMessageUtils.generateServerId(properties.getPort());
         this.upstreamHandler = new IotEmqxUpstreamHandler(serverId);
-
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        this.downstreamSubscriber = new IotEmqxDownstreamSubscriber(this, messageBus);
     }
 
     @Override
@@ -124,7 +120,7 @@ public class IotEmqxProtocol implements IotProtocol {
             return;
         }
 
-        // 1.1 创建 Vertx 实例
+        // 1.1 创建 Vertx 实例 和 下行消息订阅者
         this.vertx = Vertx.vertx();
 
         try {
@@ -138,6 +134,8 @@ public class IotEmqxProtocol implements IotProtocol {
                     getId(), properties.getPort(), serverId);
 
             // 2. 启动下行消息订阅者
+            IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+            this.downstreamSubscriber = new IotEmqxDownstreamSubscriber(this, messageBus);
             this.downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT EMQX 协议 {} 启动失败]", getId(), e);
@@ -157,11 +155,14 @@ public class IotEmqxProtocol implements IotProtocol {
 
     private void stop0() {
         // 1. 停止下行消息订阅者
-        try {
+        if (downstreamSubscriber != null) {
-            downstreamSubscriber.stop();
+            try {
-            log.info("[stop][IoT EMQX 协议 {} 下行消息订阅者已停止]", getId());
+                downstreamSubscriber.stop();
-        } catch (Exception e) {
+                log.info("[stop][IoT EMQX 协议 {} 下行消息订阅者已停止]", getId());
-            log.error("[stop][IoT EMQX 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            } catch (Exception e) {
+                log.error("[stop][IoT EMQX 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            }
+            downstreamSubscriber = null;
         }
 
         // 2.1 先置为 false：避免 closeHandler 触发重连

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/http/IotHttpProtocol.java

@@ -64,10 +64,6 @@ public class IotHttpProtocol implements IotProtocol {
     public IotHttpProtocol(ProtocolProperties properties) {
         this.properties = properties;
         this.serverId = IotDeviceMessageUtils.generateServerId(properties.getPort());
-
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        this.downstreamSubscriber = new IotHttpDownstreamSubscriber(this, messageBus);
     }
 
     @Override
@@ -87,7 +83,7 @@ public class IotHttpProtocol implements IotProtocol {
             return;
         }
 
-        // 1.1 创建 Vertx 实例（每个 Protocol 独立管理）
+        // 1.1 创建 Vertx 实例
         this.vertx = Vertx.vertx();
 
         // 1.2 创建路由
@@ -123,18 +119,12 @@ public class IotHttpProtocol implements IotProtocol {
                     getId(), properties.getPort(), serverId);
 
             // 2. 启动下行消息订阅者
+            IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+            this.downstreamSubscriber = new IotHttpDownstreamSubscriber(this, messageBus);
             this.downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT HTTP 协议 {} 启动失败]", getId(), e);
-            // 启动失败时关闭资源
+            stop0();
-            if (httpServer != null) {
-                httpServer.close();
-                httpServer = null;
-            }
-            if (vertx != null) {
-                vertx.close();
-                vertx = null;
-            }
             throw e;
         }
     }
@@ -144,6 +134,10 @@ public class IotHttpProtocol implements IotProtocol {
         if (!running) {
             return;
         }
+        stop0();
+    }
+
+    private void stop0() {
         // 1. 停止下行消息订阅者
         if (downstreamSubscriber != null) {
             try {

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/modbus/common/utils/IotModbusCommonUtils.java

@@ -381,8 +381,11 @@ public class IotModbusCommonUtils {
             case UINT16:
                 return new int[]{rawValue.intValue() & 0xFFFF};
             case INT32:
-            case UINT32:
                 return encodeInt32(rawValue.intValue(), byteOrder);
+            case UINT32:
+                // 使用 longValue() 避免超过 Integer.MAX_VALUE 时溢出，
+                // 强转 int 保留低 32 位 bit pattern，写入寄存器的字节是正确的无符号值
+                return encodeInt32((int) rawValue.longValue(), byteOrder);
             case FLOAT:
                 return encodeFloat(rawValue.floatValue(), byteOrder);
             case DOUBLE:

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/modbus/tcpmaster/IotModbusTcpMasterProtocol.java

@@ -65,7 +65,7 @@ public class IotModbusTcpMasterProtocol implements IotProtocol {
     /**
      * 下行消息订阅者
      */
-    private final IotModbusTcpMasterDownstreamSubscriber downstreamSubscriber;
+    private IotModbusTcpMasterDownstreamSubscriber downstreamSubscriber;
 
     private final IotModbusTcpMasterConfigCacheService configCacheService;
     private final IotModbusTcpMasterPollScheduler pollScheduler;
@@ -89,15 +89,9 @@ public class IotModbusTcpMasterProtocol implements IotProtocol {
 
         // 初始化 Handler
         IotModbusTcpMasterUpstreamHandler upstreamHandler = new IotModbusTcpMasterUpstreamHandler(messageService, serverId);
-        IotModbusTcpMasterDownstreamHandler downstreamHandler = new IotModbusTcpMasterDownstreamHandler(connectionManager,
-                configCacheService);
 
         // 初始化轮询调度器
         this.pollScheduler = new IotModbusTcpMasterPollScheduler(vertx, connectionManager, upstreamHandler, configCacheService);
-
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        this.downstreamSubscriber = new IotModbusTcpMasterDownstreamSubscriber(this, downstreamHandler, messageBus);
     }
 
     @Override
@@ -130,13 +124,14 @@ public class IotModbusTcpMasterProtocol implements IotProtocol {
             log.info("[start][IoT Modbus TCP Master 协议 {} 启动成功，serverId={}]", getId(), serverId);
 
             // 2. 启动下行消息订阅者
+            IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+            IotModbusTcpMasterDownstreamHandler downstreamHandler = new IotModbusTcpMasterDownstreamHandler(connectionManager,
+                    configCacheService);
+            this.downstreamSubscriber = new IotModbusTcpMasterDownstreamSubscriber(this, downstreamHandler, messageBus);
             this.downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT Modbus TCP Master 协议 {} 启动失败]", getId(), e);
-            // 启动失败时关闭资源
+            stop0();
-            if (vertx != null) {
-                vertx.close();
-            }
             throw e;
         }
     }
@@ -146,12 +141,19 @@ public class IotModbusTcpMasterProtocol implements IotProtocol {
         if (!running) {
             return;
         }
+        stop0();
+    }
+
+    private void stop0() {
         // 1. 停止下行消息订阅者
-        try {
+        if (downstreamSubscriber != null) {
-            downstreamSubscriber.stop();
+            try {
-            log.info("[stop][IoT Modbus TCP Master 协议 {} 下行消息订阅者已停止]", getId());
+                downstreamSubscriber.stop();
-        } catch (Exception e) {
+                log.info("[stop][IoT Modbus TCP Master 协议 {} 下行消息订阅者已停止]", getId());
-            log.error("[stop][IoT Modbus TCP Master 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            } catch (Exception e) {
+                log.error("[stop][IoT Modbus TCP Master 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            }
+            downstreamSubscriber = null;
         }
 
         // 2.1 取消配置刷新定时器
@@ -161,10 +163,8 @@ public class IotModbusTcpMasterProtocol implements IotProtocol {
         }
         // 2.2 停止轮询调度器
         pollScheduler.stopAll();
-        log.info("[stop][IoT Modbus TCP Master 协议 {} 轮询调度器已停止]", getId());
         // 2.3 关闭所有连接
         connectionManager.closeAll();
-        log.info("[stop][IoT Modbus TCP Master 协议 {} 连接管理器已关闭]", getId());
 
         // 3. 关闭 Vert.x 实例
         if (vertx != null) {

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/modbus/tcpmaster/manager/IotModbusTcpMasterConnectionManager.java

@@ -14,6 +14,8 @@ import org.redisson.api.RLock;
 import org.redisson.api.RedissonClient;
 
 import java.net.InetAddress;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -185,8 +187,11 @@ public class IotModbusTcpMasterConnectionManager {
      */
     private void addDeviceAndOnline(ModbusConnection connection,
                                     IotModbusDeviceConfigRespDTO config) {
-        connection.addDevice(config.getDeviceId(), config.getSlaveId());
+        Integer previous = connection.addDevice(config.getDeviceId(), config.getSlaveId());
-        sendOnlineMessage(config);
+        // 首次注册，发送上线消息
+        if (previous == null) {
+            sendOnlineMessage(config);
+        }
     }
 
     /**
@@ -247,7 +252,9 @@ public class IotModbusTcpMasterConnectionManager {
      * 关闭所有连接
      */
     public void closeAll() {
-        for (String connectionKey : connectionPool.keySet()) {
+        // 先复制再遍历，避免 closeConnection 中 remove 导致并发修改
+        List<String> connectionKeys = new ArrayList<>(connectionPool.keySet());
+        for (String connectionKey : connectionKeys) {
             closeConnection(connectionKey);
         }
         deviceConnectionMap.clear();
@@ -282,8 +289,8 @@ public class IotModbusTcpMasterConnectionManager {
          */
         private Context context;
 
-        public void addDevice(Long deviceId, Integer slaveId) {
+        public Integer addDevice(Long deviceId, Integer slaveId) {
-            deviceSlaveMap.put(deviceId, slaveId);
+            return deviceSlaveMap.putIfAbsent(deviceId, slaveId);
         }
 
         public void removeDevice(Long deviceId) {

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/modbus/tcpslave/IotModbusTcpSlaveProtocol.java

@@ -88,7 +88,7 @@ public class IotModbusTcpSlaveProtocol implements IotProtocol {
     /**
      * 下行消息订阅者
      */
-    private final IotModbusTcpSlaveDownstreamSubscriber downstreamSubscriber;
+    private IotModbusTcpSlaveDownstreamSubscriber downstreamSubscriber;
 
     private final IotModbusFrameDecoder frameDecoder;
     @SuppressWarnings("FieldCanBeLocal")
@@ -121,7 +121,6 @@ public class IotModbusTcpSlaveProtocol implements IotProtocol {
 
         // 初始化共享事务 ID 自增器（PollScheduler 和 DownstreamHandler 共用，避免 transactionId 冲突）
         AtomicInteger transactionIdCounter = new AtomicInteger(0);
-
         // 初始化轮询调度器
         this.pollScheduler = new IotModbusTcpSlavePollScheduler(
                 vertx, connectionManager, frameEncoder, pendingRequestManager,
@@ -134,13 +133,6 @@ public class IotModbusTcpSlaveProtocol implements IotProtocol {
                 deviceApi, this.messageService, frameEncoder,
                 connectionManager, configCacheService, pendingRequestManager,
                 pollScheduler, deviceService, serverId);
-
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        IotModbusTcpSlaveDownstreamHandler downstreamHandler = new IotModbusTcpSlaveDownstreamHandler(
-                connectionManager, configCacheService, frameEncoder, transactionIdCounter);
-        this.downstreamSubscriber = new IotModbusTcpSlaveDownstreamSubscriber(
-                this, downstreamHandler, messageBus);
     }
 
     @Override
@@ -179,25 +171,15 @@ public class IotModbusTcpSlaveProtocol implements IotProtocol {
                     getId(), serverId, properties.getPort());
 
             // 3. 启动下行消息订阅
+            IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+            IotModbusTcpSlaveDownstreamHandler downstreamHandler = new IotModbusTcpSlaveDownstreamHandler(
+                    connectionManager, configCacheService, frameEncoder, this.pollScheduler.getTransactionIdCounter());
+            this.downstreamSubscriber = new IotModbusTcpSlaveDownstreamSubscriber(
+                    this, downstreamHandler, messageBus);
             downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT Modbus TCP Slave 协议 {} 启动失败]", getId(), e);
-            // TODO @芋艿：后续统一优化 stop 逻辑；
+            stop0();
-            if (configRefreshTimerId != null) {
-                vertx.cancelTimer(configRefreshTimerId);
-                configRefreshTimerId = null;
-            }
-            if (requestCleanupTimerId != null) {
-                vertx.cancelTimer(requestCleanupTimerId);
-                requestCleanupTimerId = null;
-            }
-            connectionManager.closeAll();
-            if (netServer != null) {
-                netServer.close();
-            }
-            if (vertx != null) {
-                vertx.close();
-            }
             throw e;
         }
     }
@@ -207,12 +189,18 @@ public class IotModbusTcpSlaveProtocol implements IotProtocol {
         if (!running) {
             return;
         }
+        stop0();
+    }
 
+    private void stop0() {
         // 1. 停止下行消息订阅
-        try {
+        if (downstreamSubscriber != null) {
-            downstreamSubscriber.stop();
+            try {
-        } catch (Exception e) {
+                downstreamSubscriber.stop();
-            log.error("[stop][下行消息订阅器停止失败]", e);
+            } catch (Exception e) {
+                log.error("[stop][下行消息订阅器停止失败]", e);
+            }
+            downstreamSubscriber = null;
         }
 
         // 2.1 取消定时器
@@ -238,6 +226,7 @@ public class IotModbusTcpSlaveProtocol implements IotProtocol {
             } catch (Exception e) {
                 log.error("[stop][TCP Server 关闭失败]", e);
             }
+            netServer = null;
         }
 
         // 3. 关闭 Vertx

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/modbus/tcpslave/manager/IotModbusTcpSlaveConnectionManager.java

@@ -8,6 +8,8 @@ import lombok.Data;
 import lombok.experimental.Accessors;
 import lombok.extern.slf4j.Slf4j;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
@@ -155,15 +157,18 @@ public class IotModbusTcpSlaveConnectionManager {
      * 关闭所有连接
      */
     public void closeAll() {
-        for (NetSocket socket : connectionMap.keySet()) {
+        // 1. 先复制再清空，避免 closeHandler 回调时并发修改
+        List<NetSocket> sockets = new ArrayList<>(connectionMap.keySet());
+        connectionMap.clear();
+        deviceSocketMap.clear();
+        // 2. 关闭所有 socket（closeHandler 中 removeConnection 发现 map 为空会安全跳过）
+        for (NetSocket socket : sockets) {
             try {
                 socket.close();
             } catch (Exception e) {
                 log.error("[closeAll][关闭连接失败]", e);
             }
         }
-        connectionMap.clear();
-        deviceSocketMap.clear();
     }
 
 }

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/modbus/tcpslave/manager/IotModbusTcpSlavePollScheduler.java

@@ -11,6 +11,7 @@ import cn.iocoder.yudao.module.iot.gateway.protocol.modbus.tcpslave.codec.IotMod
 import cn.iocoder.yudao.module.iot.gateway.protocol.modbus.tcpslave.manager.IotModbusTcpSlaveConnectionManager.ConnectionInfo;
 import cn.iocoder.yudao.module.iot.gateway.protocol.modbus.tcpslave.manager.IotModbusTcpSlavePendingRequestManager.PendingRequest;
 import io.vertx.core.Vertx;
+import lombok.Getter;
 import lombok.extern.slf4j.Slf4j;
 
 import java.util.concurrent.atomic.AtomicInteger;
@@ -31,6 +32,7 @@ public class IotModbusTcpSlavePollScheduler extends AbstractIotModbusPollSchedul
     /**
      * TCP 事务 ID 自增器（与 DownstreamHandler 共享）
      */
+    @Getter
     private final AtomicInteger transactionIdCounter;
 
     public IotModbusTcpSlavePollScheduler(Vertx vertx,

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/mqtt/IotMqttProtocol.java

@@ -81,7 +81,7 @@ public class IotMqttProtocol implements IotProtocol {
     /**
      * 下行消息订阅者
      */
-    private final IotMqttDownstreamSubscriber downstreamSubscriber;
+    private IotMqttDownstreamSubscriber downstreamSubscriber;
 
     private final IotDeviceMessageService deviceMessageService;
 
@@ -104,11 +104,6 @@ public class IotMqttProtocol implements IotProtocol {
         this.authHandler = new IotMqttAuthHandler(connectionManager, deviceMessageService, deviceApi, serverId);
         this.registerHandler = new IotMqttRegisterHandler(connectionManager, deviceMessageService);
         this.upstreamHandler = new IotMqttUpstreamHandler(connectionManager, deviceMessageService, serverId);
-
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        IotMqttDownstreamHandler downstreamHandler = new IotMqttDownstreamHandler(deviceMessageService, connectionManager);
-        this.downstreamSubscriber = new IotMqttDownstreamSubscriber(this, downstreamHandler, messageBus);
     }
 
     @Override
@@ -157,18 +152,13 @@ public class IotMqttProtocol implements IotProtocol {
                     getId(), properties.getPort(), serverId);
 
             // 2. 启动下行消息订阅者
+            IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+            IotMqttDownstreamHandler downstreamHandler = new IotMqttDownstreamHandler(deviceMessageService, connectionManager);
+            this.downstreamSubscriber = new IotMqttDownstreamSubscriber(this, downstreamHandler, messageBus);
             this.downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT MQTT 协议 {} 启动失败]", getId(), e);
-            // 启动失败时关闭资源
+            stop0();
-            if (mqttServer != null) {
-                mqttServer.close();
-                mqttServer = null;
-            }
-            if (vertx != null) {
-                vertx.close();
-                vertx = null;
-            }
             throw e;
         }
     }
@@ -178,15 +168,24 @@ public class IotMqttProtocol implements IotProtocol {
         if (!running) {
             return;
         }
+        stop0();
+    }
+
+    private void stop0() {
         // 1. 停止下行消息订阅者
-        try {
+        if (downstreamSubscriber != null) {
-            downstreamSubscriber.stop();
+            try {
-            log.info("[stop][IoT MQTT 协议 {} 下行消息订阅者已停止]", getId());
+                downstreamSubscriber.stop();
-        } catch (Exception e) {
+                log.info("[stop][IoT MQTT 协议 {} 下行消息订阅者已停止]", getId());
-            log.error("[stop][IoT MQTT 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            } catch (Exception e) {
+                log.error("[stop][IoT MQTT 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            }
+            downstreamSubscriber = null;
         }
 
-        // 2.1 关闭 MQTT 服务器
+        // 2.1 关闭所有连接
+        connectionManager.closeAll();
+        // 2.2 关闭 MQTT 服务器
         if (mqttServer != null) {
             try {
                 mqttServer.close().result();
@@ -196,7 +195,7 @@ public class IotMqttProtocol implements IotProtocol {
             }
             mqttServer = null;
         }
-        // 2.2 关闭 Vertx 实例
+        // 2.3 关闭 Vertx 实例
         if (vertx != null) {
             try {
                 vertx.close().result();

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/mqtt/manager/IotMqttConnectionManager.java

@@ -8,6 +8,8 @@ import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -166,6 +168,24 @@ public class IotMqttConnectionManager {
         return deviceEndpointMap.get(deviceId);
     }
 
+    /**
+     * 关闭所有连接
+     */
+    public void closeAll() {
+        // 1. 先复制再清空，避免 closeHandler 回调时并发修改
+        List<MqttEndpoint> endpoints = new ArrayList<>(connectionMap.keySet());
+        connectionMap.clear();
+        deviceEndpointMap.clear();
+        // 2. 关闭所有连接（closeHandler 中 unregisterConnection 发现 map 为空会安全跳过）
+        for (MqttEndpoint endpoint : endpoints) {
+            try {
+                endpoint.close();
+            } catch (Exception ignored) {
+                // 连接可能已关闭，忽略异常
+            }
+        }
+    }
+
     /**
      * 连接信息
      */

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/tcp/IotTcpProtocol.java

@@ -66,7 +66,7 @@ public class IotTcpProtocol implements IotProtocol {
     /**
      * 下行消息订阅者
      */
-    private final IotTcpDownstreamSubscriber downstreamSubscriber;
+    private IotTcpDownstreamSubscriber downstreamSubscriber;
 
     /**
      * 消息序列化器
@@ -94,11 +94,6 @@ public class IotTcpProtocol implements IotProtocol {
 
         // 初始化连接管理器
         this.connectionManager = new IotTcpConnectionManager(tcpConfig.getMaxConnections());
-
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        IotTcpDownstreamHandler downstreamHandler = new IotTcpDownstreamHandler(connectionManager, frameCodec, serializer);
-        this.downstreamSubscriber = new IotTcpDownstreamSubscriber(this, downstreamHandler, messageBus);
     }
 
     @Override
@@ -152,18 +147,13 @@ public class IotTcpProtocol implements IotProtocol {
                     getId(), properties.getPort(), serverId);
 
             // 2. 启动下行消息订阅者
+            IotTcpDownstreamHandler downstreamHandler = new IotTcpDownstreamHandler(connectionManager, frameCodec, serializer);
+            IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+            this.downstreamSubscriber = new IotTcpDownstreamSubscriber(this, downstreamHandler, messageBus);
             this.downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT TCP 协议 {} 启动失败]", getId(), e);
-            // 启动失败时关闭资源
+            stop0();
-            if (tcpServer != null) {
-                tcpServer.close();
-                tcpServer = null;
-            }
-            if (vertx != null) {
-                vertx.close();
-                vertx = null;
-            }
             throw e;
         }
     }
@@ -173,15 +163,24 @@ public class IotTcpProtocol implements IotProtocol {
         if (!running) {
             return;
         }
+        stop0();
+    }
+
+    private void stop0() {
         // 1. 停止下行消息订阅者
-        try {
+        if (downstreamSubscriber != null) {
-            downstreamSubscriber.stop();
+            try {
-            log.info("[stop][IoT TCP 协议 {} 下行消息订阅者已停止]", getId());
+                downstreamSubscriber.stop();
-        } catch (Exception e) {
+                log.info("[stop][IoT TCP 协议 {} 下行消息订阅者已停止]", getId());
-            log.error("[stop][IoT TCP 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            } catch (Exception e) {
+                log.error("[stop][IoT TCP 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            }
+            downstreamSubscriber = null;
         }
 
-        // 2.1 关闭 TCP 服务器
+        // 2.1 关闭所有连接
+        connectionManager.closeAll();
+        // 2.2 关闭 TCP 服务器
         if (tcpServer != null) {
             try {
                 tcpServer.close().result();
@@ -191,7 +190,7 @@ public class IotTcpProtocol implements IotProtocol {
             }
             tcpServer = null;
         }
-        // 2.2 关闭 Vertx 实例
+        // 2.3 关闭 Vertx 实例
         if (vertx != null) {
             try {
                 vertx.close().result();

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/tcp/manager/IotTcpConnectionManager.java

@@ -5,6 +5,8 @@ import io.vertx.core.net.NetSocket;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -122,6 +124,24 @@ public class IotTcpConnectionManager {
         }
     }
 
+    /**
+     * 关闭所有连接
+     */
+    public void closeAll() {
+        // 1. 先复制再清空，避免 closeHandler 回调时并发修改
+        List<NetSocket> sockets = new ArrayList<>(connectionMap.keySet());
+        connectionMap.clear();
+        deviceSocketMap.clear();
+        // 2. 关闭所有连接（closeHandler 中 unregisterConnection 发现 map 为空会安全跳过）
+        for (NetSocket socket : sockets) {
+            try {
+                socket.close();
+            } catch (Exception ignored) {
+                // 连接可能已关闭，忽略异常
+            }
+        }
+    }
+
     /**
      * 连接信息（包含认证信息）
      */

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/udp/IotUdpProtocol.java

@@ -63,7 +63,7 @@ public class IotUdpProtocol implements IotProtocol {
     /**
      * 下行消息订阅者
      */
-    private final IotUdpDownstreamSubscriber downstreamSubscriber;
+    private IotUdpDownstreamSubscriber downstreamSubscriber;
 
     /**
      * 消息序列化器
@@ -85,10 +85,6 @@ public class IotUdpProtocol implements IotProtocol {
         // 初始化会话管理器
         this.sessionManager = new IotUdpSessionManager(udpConfig.getMaxSessions(), udpConfig.getSessionTimeoutMs());
 
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        IotUdpDownstreamHandler downstreamHandler = new IotUdpDownstreamHandler(this, sessionManager, serializer);
-        this.downstreamSubscriber = new IotUdpDownstreamSubscriber(this, downstreamHandler, messageBus);
     }
 
     @Override
@@ -108,8 +104,11 @@ public class IotUdpProtocol implements IotProtocol {
             return;
         }
 
-        // 1.1 创建 Vertx 实例
+        // 1.1 创建 Vertx 实例 和 下行消息订阅者
         this.vertx = Vertx.vertx();
+        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+        IotUdpDownstreamHandler downstreamHandler = new IotUdpDownstreamHandler(this, sessionManager, serializer);
+        this.downstreamSubscriber = new IotUdpDownstreamSubscriber(this, downstreamHandler, messageBus);
 
         // 1.2 创建 UDP Socket 选项
         IotUdpConfig udpConfig = properties.getUdp();
@@ -137,15 +136,7 @@ public class IotUdpProtocol implements IotProtocol {
             this.downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT UDP 协议 {} 启动失败]", getId(), e);
-            // 启动失败时关闭资源
+            stop0();
-            if (udpSocket != null) {
-                udpSocket.close();
-                udpSocket = null;
-            }
-            if (vertx != null) {
-                vertx.close();
-                vertx = null;
-            }
             throw e;
         }
     }
@@ -155,12 +146,19 @@ public class IotUdpProtocol implements IotProtocol {
         if (!running) {
             return;
         }
+        stop0();
+    }
+
+    private void stop0() {
         // 1. 停止下行消息订阅者
-        try {
+        if (downstreamSubscriber != null) {
-            downstreamSubscriber.stop();
+            try {
-            log.info("[stop][IoT UDP 协议 {} 下行消息订阅者已停止]", getId());
+                downstreamSubscriber.stop();
-        } catch (Exception e) {
+                log.info("[stop][IoT UDP 协议 {} 下行消息订阅者已停止]", getId());
-            log.error("[stop][IoT UDP 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            } catch (Exception e) {
+                log.error("[stop][IoT UDP 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            }
+            downstreamSubscriber = null;
         }
 
         // 2.1 关闭 UDP Socket

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/websocket/IotWebSocketProtocol.java

@@ -1,5 +1,6 @@
 package cn.iocoder.yudao.module.iot.gateway.protocol.websocket;
 
+import cn.hutool.core.lang.Assert;
 import cn.hutool.core.util.ObjUtil;
 import cn.hutool.extra.spring.SpringUtil;
 import cn.iocoder.yudao.module.iot.core.enums.IotProtocolTypeEnum;
@@ -9,8 +10,8 @@ import cn.iocoder.yudao.module.iot.core.util.IotDeviceMessageUtils;
 import cn.iocoder.yudao.module.iot.gateway.config.IotGatewayProperties;
 import cn.iocoder.yudao.module.iot.gateway.config.IotGatewayProperties.ProtocolProperties;
 import cn.iocoder.yudao.module.iot.gateway.protocol.IotProtocol;
-import cn.iocoder.yudao.module.iot.gateway.protocol.websocket.handler.downstream.IotWebSocketDownstreamSubscriber;
 import cn.iocoder.yudao.module.iot.gateway.protocol.websocket.handler.downstream.IotWebSocketDownstreamHandler;
+import cn.iocoder.yudao.module.iot.gateway.protocol.websocket.handler.downstream.IotWebSocketDownstreamSubscriber;
 import cn.iocoder.yudao.module.iot.gateway.protocol.websocket.handler.upstream.IotWebSocketUpstreamHandler;
 import cn.iocoder.yudao.module.iot.gateway.protocol.websocket.manager.IotWebSocketConnectionManager;
 import cn.iocoder.yudao.module.iot.gateway.serialize.IotMessageSerializer;
@@ -21,7 +22,6 @@ import io.vertx.core.http.HttpServerOptions;
 import io.vertx.core.net.PemKeyCertOptions;
 import lombok.Getter;
 import lombok.extern.slf4j.Slf4j;
-import cn.hutool.core.lang.Assert;
 
 /**
  * IoT WebSocket 协议实现
@@ -65,7 +65,7 @@ public class IotWebSocketProtocol implements IotProtocol {
     /**
      * 下行消息订阅者
      */
-    private final IotWebSocketDownstreamSubscriber downstreamSubscriber;
+    private IotWebSocketDownstreamSubscriber downstreamSubscriber;
 
     /**
      * 消息序列化器
@@ -87,10 +87,6 @@ public class IotWebSocketProtocol implements IotProtocol {
         // 初始化连接管理器
         this.connectionManager = new IotWebSocketConnectionManager();
 
-        // 初始化下行消息订阅者
-        IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
-        IotWebSocketDownstreamHandler downstreamHandler = new IotWebSocketDownstreamHandler(serializer, connectionManager);
-        this.downstreamSubscriber = new IotWebSocketDownstreamSubscriber(this, downstreamHandler, messageBus);
     }
 
     @Override
@@ -152,17 +148,13 @@ public class IotWebSocketProtocol implements IotProtocol {
                     getId(), properties.getPort(), wsConfig.getPath(), serverId);
 
             // 2. 启动下行消息订阅者
+            IotMessageBus messageBus = SpringUtil.getBean(IotMessageBus.class);
+            IotWebSocketDownstreamHandler downstreamHandler = new IotWebSocketDownstreamHandler(serializer, connectionManager);
+            this.downstreamSubscriber = new IotWebSocketDownstreamSubscriber(this, downstreamHandler, messageBus);
             downstreamSubscriber.start();
         } catch (Exception e) {
             log.error("[start][IoT WebSocket 协议 {} 启动失败]", getId(), e);
-            if (httpServer != null) {
+            stop0();
-                httpServer.close();
-                httpServer = null;
-            }
-            if (vertx != null) {
-                vertx.close();
-                vertx = null;
-            }
             throw e;
         }
     }
@@ -172,15 +164,24 @@ public class IotWebSocketProtocol implements IotProtocol {
         if (!running) {
             return;
         }
+        stop0();
+    }
+
+    private void stop0() {
         // 1. 停止下行消息订阅者
-        try {
+        if (downstreamSubscriber != null) {
-            downstreamSubscriber.stop();
+            try {
-            log.info("[stop][IoT WebSocket 协议 {} 下行消息订阅者已停止]", getId());
+                downstreamSubscriber.stop();
-        } catch (Exception e) {
+                log.info("[stop][IoT WebSocket 协议 {} 下行消息订阅者已停止]", getId());
-            log.error("[stop][IoT WebSocket 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            } catch (Exception e) {
+                log.error("[stop][IoT WebSocket 协议 {} 下行消息订阅者停止失败]", getId(), e);
+            }
+            downstreamSubscriber = null;
         }
 
-        // 2.1 关闭 WebSocket 服务器
+        // 2.1 关闭所有连接
+        connectionManager.closeAll();
+        // 2.2 关闭 WebSocket 服务器
         if (httpServer != null) {
             try {
                 httpServer.close().result();
@@ -190,7 +191,7 @@ public class IotWebSocketProtocol implements IotProtocol {
             }
             httpServer = null;
         }
-        // 2.2 关闭 Vertx 实例
+        // 2.3 关闭 Vertx 实例
         if (vertx != null) {
             try {
                 vertx.close().result();

yudao-module-iot/yudao-module-iot-gateway/src/main/java/cn/iocoder/yudao/module/iot/gateway/protocol/websocket/manager/IotWebSocketConnectionManager.java

@@ -5,6 +5,8 @@ import lombok.Data;
 import lombok.experimental.Accessors;
 import lombok.extern.slf4j.Slf4j;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -114,6 +116,24 @@ public class IotWebSocketConnectionManager {
         }
     }
 
+    /**
+     * 关闭所有连接
+     */
+    public void closeAll() {
+        // 1. 先复制再清空，避免 closeHandler 回调时并发修改
+        List<ServerWebSocket> sockets = new ArrayList<>(connectionMap.keySet());
+        connectionMap.clear();
+        deviceSocketMap.clear();
+        // 2. 关闭所有连接（closeHandler 中 unregisterConnection 发现 map 为空会安全跳过）
+        for (ServerWebSocket socket : sockets) {
+            try {
+                socket.close();
+            } catch (Exception ignored) {
+                // 连接可能已关闭，忽略异常
+            }
+        }
+    }
+
     /**
      * 连接信息（包含认证信息）
      */

yudao-module-iot/yudao-module-iot-gateway/src/main/resources/application.yaml

@@ -167,7 +167,7 @@ yudao:
         # 针对引入的 Modbus TCP Master 组件的配置
         # ====================================
         - id: modbus-tcp-master-1
-          enabled: true
+          enabled: false
           protocol: modbus_tcp_master
           port: 502
           modbus-tcp-master:
@@ -176,7 +176,7 @@ yudao:
         # 针对引入的 Modbus TCP Slave 组件的配置
         # ====================================
         - id: modbus-tcp-slave-1
-          enabled: true
+          enabled: false
           protocol: modbus_tcp_slave
           port: 503
           modbus-tcp-slave: