diff --git a/taoyao-signal-server/taoyao-boot/src/main/java/com/acgist/taoyao/boot/model/Message.java b/taoyao-signal-server/taoyao-boot/src/main/java/com/acgist/taoyao/boot/model/Message.java
index b90b868..14e701f 100644
--- a/taoyao-signal-server/taoyao-boot/src/main/java/com/acgist/taoyao/boot/model/Message.java
+++ b/taoyao-signal-server/taoyao-boot/src/main/java/com/acgist/taoyao/boot/model/Message.java
@@ -1,6 +1,7 @@
 package com.acgist.taoyao.boot.model;
 
 import java.io.Serializable;
+import java.util.Objects;
 
 import org.apache.commons.lang3.StringUtils;
 
@@ -174,6 +175,7 @@ public class Message implements Cloneable, Serializable {
      * @return this
      */
     public Message setCode(MessageCode messageCode, String message) {
+        Objects.requireNonNull(messageCode, "响应编码不能为空");
         this.code    = messageCode.getCode();
         this.message = StringUtils.isEmpty(message) ? messageCode.getMessage() : message;
         return this;
diff --git a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/ProtocolClientAdapter.java b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/ProtocolClientAdapter.java
index 5b0d404..087e1af 100644
--- a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/ProtocolClientAdapter.java
+++ b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/ProtocolClientAdapter.java
@@ -25,10 +25,10 @@ public abstract class ProtocolClientAdapter extends ProtocolAdapter {
     /**
      * 处理终端信令
      * 
-     * @param clientId   终端标识
+     * @param clientId   终端ID
      * @param clientType 终端类型
      * @param client     终端
-     * @param message    消息
+     * @param message    信令消息
      * @param body       消息主体
      */
     public void execute(String clientId, ClientType clientType, Client client, Message message, Map<String, Object> body) {
diff --git a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/ProtocolControlAdapter.java b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/ProtocolControlAdapter.java
index 9728e4d..3cf13b6 100644
--- a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/ProtocolControlAdapter.java
+++ b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/ProtocolControlAdapter.java
@@ -33,12 +33,11 @@ public abstract class ProtocolControlAdapter extends ProtocolClientAdapter {
     /**
      * 处理终端控制信令
      * 
-     * @param clientId     终端标识
+     * @param clientId     终端ID
      * @param clientType   终端类型
-     * @param room         房间
      * @param client       终端
-     * @param targetClient 目标
-     * @param message      消息
+     * @param targetClient 目标终端
+     * @param message      信令消息
      * @param body         消息主体
      */
     public void execute(String clientId, ClientType clientType, Client client, Client targetClient, Message message, Map<String, Object> body) {