diff --git a/taoyao-client-android/taoyao/client/src/main/java/com/acgist/taoyao/client/signal/Taoyao.java b/taoyao-client-android/taoyao/client/src/main/java/com/acgist/taoyao/client/signal/Taoyao.java
index 8e45529..65f1042 100644
--- a/taoyao-client-android/taoyao/client/src/main/java/com/acgist/taoyao/client/signal/Taoyao.java
+++ b/taoyao-client-android/taoyao/client/src/main/java/com/acgist/taoyao/client/signal/Taoyao.java
@@ -1173,7 +1173,7 @@ public final class Taoyao implements ITaoyao {
         final String sessionId            = MapUtils.get(body, "sessionId");
         final SessionClient sessionClient = this.sessions.remove(sessionId);
         if(sessionClient == null) {
-            Log.w(Taoyao.class.getSimpleName(), "无效会话：" + sessionId);
+            Log.w(Taoyao.class.getSimpleName(), "关闭媒体（无效会话）：" + sessionId);
             return;
         }
         sessionClient.close();
@@ -1189,7 +1189,7 @@ public final class Taoyao implements ITaoyao {
         final String sessionId            = MapUtils.get(body, "sessionId");
         final SessionClient sessionClient = this.sessions.get(sessionId);
         if(sessionClient == null) {
-            Log.w(Taoyao.class.getSimpleName(), "无效会话：" + sessionId);
+            Log.w(Taoyao.class.getSimpleName(), "媒体交换（无效会话）：" + sessionId);
             return;
         }
         sessionClient.exchange(message, body);
diff --git a/taoyao-client-web/src/components/Taoyao.js b/taoyao-client-web/src/components/Taoyao.js
index 9e27658..d04cc44 100644
--- a/taoyao-client-web/src/components/Taoyao.js
+++ b/taoyao-client-web/src/components/Taoyao.js
@@ -3072,21 +3072,20 @@ class Taoyao extends RemoteClient {
    * @param {*} message 信令消息
    */
   async defaultSessionCall(message) {
-    const me = this;
-    await me.checkDevice();
+    await this.checkDevice();
     const { name, clientId, sessionId } = message.body;
     const session = new Session({
       name,
       clientId,
       sessionId,
-      audioEnabled: me.audioProduce,
-      videoEnabled: me.videoProduce
+      audioEnabled: this.audioProduce,
+      videoEnabled: this.videoProduce
     });
     this.sessionClients.set(sessionId, session);
-    await me.buildPeerConnection(session, sessionId);
+    await this.buildPeerConnection(session, sessionId);
     session.peerConnection.createOffer().then(async (description) => {
       await session.peerConnection.setLocalDescription(description);
-      me.push(protocol.buildMessage("session::exchange", {
+      this.push(protocol.buildMessage("session::exchange", {
         sdp      : description.sdp,
         type     : description.type,
         sessionId: sessionId
@@ -3095,61 +3094,63 @@ class Taoyao extends RemoteClient {
   }
 
   /**
-   * 关闭会话
+   * 关闭媒体信令
    * 
    * @param {*} sessionId 会话ID
    */
   async sessionClose(sessionId) {
-    const me = this;
-    me.push(protocol.buildMessage("session::close", {
+    this.push(protocol.buildMessage("session::close", {
       sessionId
     }));
   }
 
   /**
-   * 关闭会话信令
+   * 关闭媒体信令
    * 
    * @param {*} message 信令消息
    */
   async defaultSessionClose(message) {
-    const me = this;
     const { sessionId } = message.body;
-    const session = me.sessionClients.get(sessionId);
+    const session = this.sessionClients.get(sessionId);
     if(session) {
-      console.debug("关闭会话", sessionId);
-      session.close();
-      me.sessionClients.delete(sessionId);
+      console.debug("关闭媒体", sessionId);
+      await session.close();
+      this.sessionClients.delete(sessionId);
     } else {
-      console.debug("关闭会话（无效）", sessionId);
+      console.debug("关闭媒体（无效会话）", sessionId);
     }
   }
 
   /**
-   * 会话媒体交换信令
+   * 媒体交换信令
    * 
    * @param {*} message 信令消息
    */
   async defaultSessionExchange(message) {
-    const me = this;
-    const { type, candidate, sessionId } = message.body;
+    const body = message.body;
+    const {
+      type,
+      candidate,
+      sessionId,
+    } = body;
     const session = this.sessionClients.get(sessionId);
     if (type === "offer") {
-      await me.buildPeerConnection(session, sessionId);
-      await session.peerConnection.setRemoteDescription(new RTCSessionDescription(message.body));
+      await this.buildPeerConnection(session, sessionId);
+      await session.peerConnection.setRemoteDescription(new RTCSessionDescription(body));
       session.peerConnection.createAnswer().then(async description => {
         await session.peerConnection.setLocalDescription(description);
-        me.push(protocol.buildMessage("session::exchange", {
+        this.push(protocol.buildMessage("session::exchange", {
           sdp      : description.sdp,
           type     : description.type,
           sessionId: sessionId
         }));
       });
     } else if (type === "answer") {
-      await session.peerConnection.setRemoteDescription(new RTCSessionDescription(message.body));
+      await session.peerConnection.setRemoteDescription(new RTCSessionDescription(body));
     } else if (type === "candidate") {
       await session.addIceCandidate(candidate);
     } else {
-      // 未知类型
+      console.warn("媒体交换无效类型", body);
     }
   }
 
@@ -3268,9 +3269,8 @@ class Taoyao extends RemoteClient {
     if(session.peerConnection)  {
       return session.peerConnection;
     }
-    const me = this;
     const peerConnection = new RTCPeerConnection({
-      "iceServers": me.webrtcConfig.iceServers || defaultRTCPeerConnectionConfig.iceServers
+      "iceServers": this.webrtcConfig.iceServers || defaultRTCPeerConnectionConfig.iceServers
     });
     peerConnection.ontrack = event => {
       console.debug("会话添加远程媒体轨道", event);
@@ -3284,7 +3284,7 @@ class Taoyao extends RemoteClient {
       } else {
         // 未知媒体类型
       }
-      me.callbackTrack(session.clientId, track);
+      this.callbackTrack(session.clientId, track);
       if(session.proxy && session.proxy.media) {
         session.proxy.media(track);
       } else {
@@ -3293,7 +3293,7 @@ class Taoyao extends RemoteClient {
     };
     peerConnection.onicecandidate = event => {
       console.debug("会话媒体协商", event);
-      me.push(protocol.buildMessage("session::exchange", {
+      this.push(protocol.buildMessage("session::exchange", {
         type      : "candidate",
         sessionId : sessionId,
         candidate : event.candidate
@@ -3306,7 +3306,7 @@ class Taoyao extends RemoteClient {
         peerConnection.restartIce();
       }
     }
-    const localStream      = await me.getStream();
+    const localStream      = await this.getStream();
     session.localStream    = localStream;
     session.peerConnection = peerConnection;
     if(session.audioEnabled && localStream.getAudioTracks().length >= 0) {
@@ -3595,4 +3595,3 @@ class Taoyao extends RemoteClient {
 }
 
 export { Taoyao };
-
diff --git a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/party/session/SessionManager.java b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/party/session/SessionManager.java
index 8ce8dda..5ee5166 100644
--- a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/party/session/SessionManager.java
+++ b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/party/session/SessionManager.java
@@ -39,7 +39,7 @@ public class SessionManager {
     public Session call(Client source, Client target) {
         final Session session = new Session(this.idService.buildUuid(), source, target);
         this.sessions.put(session.getId(), session);
-        log.info("创建视频会话：{} - {} - {}", session.getId(), session.getSourceClientId(), session.getTargetClientId());
+        log.info("创建会话：{} - {} - {}", session.getId(), session.getSourceClientId(), session.getTargetClientId());
         return session;
     }
     
@@ -60,7 +60,7 @@ public class SessionManager {
     public Session remove(String sessionId) {
         final Session session = this.sessions.remove(sessionId);
         if(session != null) {
-            log.info("移除视频会话：{} - {} - {}", sessionId, session.getSourceClientId(), session.getTargetClientId());
+            log.info("移除会话：{} - {} - {}", sessionId, session.getSourceClientId(), session.getTargetClientId());
         }
         return session;
     }
diff --git a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/session/SessionCloseProtocol.java b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/session/SessionCloseProtocol.java
index f1b5c26..820fbb0 100644
--- a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/session/SessionCloseProtocol.java
+++ b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/session/SessionCloseProtocol.java
@@ -14,11 +14,14 @@ import com.acgist.taoyao.signal.event.session.SessionCloseEvent;
 import com.acgist.taoyao.signal.party.session.Session;
 import com.acgist.taoyao.signal.protocol.ProtocolSessionAdapter;
 
+import lombok.extern.slf4j.Slf4j;
+
 /**
  * 关闭媒体信令
  * 
  * @author acgist
  */
+@Slf4j
 @Protocol
 @Description(
     body = """
@@ -39,13 +42,16 @@ public class SessionCloseProtocol extends ProtocolSessionAdapter implements Appl
     @Override
     public void onApplicationEvent(SessionCloseEvent event) {
         final Session session = event.getSession();
-        final Map<String, String> body = Map.of(Constant.SESSION_ID, event.getSessionId());
-        session.push(this.build(body));
+        session.push(this.build(Map.of(
+            Constant.SESSION_ID,
+            event.getSessionId()
+        )));
         this.sessionManager.remove(session.getId());
     }
     
     @Override
     public void execute(String clientId, ClientType clientType, Session session, Client client, Message message, Map<String, Object> body) {
+        log.info("关闭会话：{}", session.getId());
         session.close();
     }
     
diff --git a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/session/SessionExchangeProtocol.java b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/session/SessionExchangeProtocol.java
index 8bbb5fe..729a38e 100644
--- a/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/session/SessionExchangeProtocol.java
+++ b/taoyao-signal-server/taoyao-signal/src/main/java/com/acgist/taoyao/signal/protocol/session/SessionExchangeProtocol.java
@@ -26,12 +26,7 @@ import com.acgist.taoyao.signal.protocol.ProtocolSessionAdapter;
     body = """
     {
         "sdp"      : "sdp"
-        "type"     : "offer",
-        "sessionId": "会话ID"
-    }
-    {
-        "sdp"      : "sdp"
-        "type"     : "answer",
+        "type"     : "offer|answer",
         "sessionId": "会话ID"
     }
     {
@@ -39,7 +34,7 @@ import com.acgist.taoyao.signal.protocol.ProtocolSessionAdapter;
         "sessionId": "会话ID",
         "candidate": {
             "sdpMid"       : "sdpMid",
-            "candidate"    : "candidate信息",
+            "candidate"    : "candidate",
             "sdpMLineIndex": sdpMLineIndex 
         }
     }