src/org/redkale/net/http/WebSocket.java

@@ -32,6 +32,7 @@ import org.redkale.net.*;
  *  此模式下 以上方法都应该被重载。
  * <p>
  *
+ * 
  * @see http://www.redkale.org
  * @author zhangjx
  */
@@ -130,6 +131,11 @@ public abstract class WebSocket {
         return send(data, true);
     }
 
+    public final int sendPing() {
+        //if (_engine.finest) _engine.logger.finest(this + " on "+_engine.getEngineid()+" ping...");
+        return send(WebSocketPacket.DEFAULT_PING_PACKET);
+    }
+
     public final int sendPing(byte[] data) {
         return send(new WebSocketPacket(FrameType.PING, data));
     }

src/org/redkale/net/http/WebSocketEngine.java

@@ -5,7 +5,6 @@
  */
 package org.redkale.net.http;
 
-import static org.redkale.net.http.WebSocketPacket.DEFAULT_PING_PACKET;
 import static org.redkale.net.http.WebSocketServlet.DEFAILT_LIVEINTERVAL;
 import java.io.*;
 import java.util.*;
@@ -56,8 +55,7 @@ public final class WebSocketEngine {
         });
         long delay = (liveinterval - System.currentTimeMillis() / 1000 % liveinterval) + index * 5;
         scheduler.scheduleWithFixedDelay(() -> {
-            getWebSocketGroups().stream().forEach(x -> x.sendEach(DEFAULT_PING_PACKET));
-            //if (finest) logger.finest(engineid + " ping...");
+            getWebSocketGroups().stream().forEach(x -> x.sendEachPing());
         }, delay, liveinterval, TimeUnit.SECONDS);
         if (finest) logger.finest(this.getClass().getSimpleName() + "(" + engineid + ")" + " start keeplive(delay:" + delay + ", interval:" + liveinterval + "s) scheduler executor");
     }

src/org/redkale/net/http/WebSocketGroup.java

@@ -101,6 +101,14 @@ public final class WebSocketGroup {
         return rs;
     }
 
+    public final int sendEachPing() {
+        int rs = 0;
+        for (WebSocket s : list) {
+            rs |= s.sendPing();
+        }
+        return rs;
+    }
+
     public final int sendRecent(Serializable message) {
         return sendRecent(message, true);
     }