1 files changed, 8 insertions, 0 deletions
diff --git a/src/main/java/com/juick/server/ServerManager.java b/src/main/java/com/juick/server/ServerManager.java
index 586d5962..7a95ec43 100644
--- a/src/main/java/com/juick/server/ServerManager.java
+++ b/src/main/java/com/juick/server/ServerManager.java
@@ -35,6 +35,7 @@ import com.juick.util.MessageUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
 import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 import org.springframework.web.socket.TextMessage;
@@ -291,4 +292,11 @@ public class ServerManager implements NotificationListener {
     public CopyOnWriteArrayList<EventSession> getSessions() {
         return sessions;
     }
+    @Scheduled(fixedRate = 30000)
+    public void ping() {
+        Message ping = new Message();
+        ping.setService(true);
+        sendSseEvent(ping, "ping", getSessions().stream().map(s -> s.user)
+                .distinct().collect(Collectors.toList()));
+    }
 }