解决旧连接超时 误删除新session连接的问题。

core/src/main/java/com/wecloud/im/ws/manager/ChannelManager.java

@@ -79,6 +79,12 @@ public class ChannelManager {
         // 关掉连接
         channelHandlerContext.close();
 
+        ClientInfo oldChanel = ChannelManager.SESSION_INFO_MAP.get(genKeyForSessionInfoMap(clientId, platform));
+        if(oldChanel != null && oldChanel.getNioSocketChannel().isActive()) {
+            // 活跃的连接，可能是新建的，不能处理
+            log.info("连接还是活跃的，不下线处理 clientId {},oldChanel {}", clientId, oldChanel.getNioSocketChannel().id().asLongText());
+            return;
+        }
 
         // 移除本地维护的channel
         delSessionInfoMap(clientId, platform);
@@ -97,11 +103,7 @@ public class ChannelManager {
         clientInfo.setNioSocketChannel(channel);
         clientInfo.setToken("");
         log.info("本地存缓存key {}", genKeyForSessionInfoMap(clientId, platform));
-        ClientInfo oldChanel = ChannelManager.SESSION_INFO_MAP.get(genKeyForSessionInfoMap(clientId, platform));
-        if(oldChanel != null) {
-            log.info("删除旧连接 oldChanel {}", oldChanel.getNioSocketChannel().id());
-            oldChanel.getNioSocketChannel().close();
-        }
+
         ChannelManager.SESSION_INFO_MAP.put(genKeyForSessionInfoMap(clientId, platform), clientInfo);
     }