From a911c89be8a8b8e89086536939684b2720b2cfa2 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Thu, 12 Jan 2017 23:07:18 +0300
Subject: juick-ws: ping websocket clients

---
 juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java | 13 +++++++++++++
 .../com/juick/ws/configuration/WebsocketConfiguration.java  |  2 ++
 2 files changed, 15 insertions(+)

(limited to 'juick-ws/src')

diff --git a/juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java b/juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java
index 32888797..81f636a7 100644
--- a/juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java
+++ b/juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java
@@ -10,7 +10,9 @@ import org.apache.http.client.utils.URLEncodedUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.HttpHeaders;
+import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.web.socket.CloseStatus;
+import org.springframework.web.socket.PingMessage;
 import org.springframework.web.socket.WebSocketSession;
 import org.springframework.web.socket.handler.TextWebSocketHandler;
 
@@ -117,6 +119,17 @@ public class WebsocketComponent extends TextWebSocketHandler {
 
     }
 
+    @Scheduled(fixedRate = 30000)
+    public void ping() {
+        clients.forEach(c -> {
+            try {
+                c.session.sendMessage(new PingMessage());
+            } catch (IOException e) {
+                logger.error("WebSocket PING exception", e);
+            }
+        });
+    }
+
     public List<SocketSubscribed> getClients() {
         return clients;
     }
diff --git a/juick-ws/src/main/java/com/juick/ws/configuration/WebsocketConfiguration.java b/juick-ws/src/main/java/com/juick/ws/configuration/WebsocketConfiguration.java
index fea6959f..e0a31b13 100644
--- a/juick-ws/src/main/java/com/juick/ws/configuration/WebsocketConfiguration.java
+++ b/juick-ws/src/main/java/com/juick/ws/configuration/WebsocketConfiguration.java
@@ -6,6 +6,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.PropertySource;
 import org.springframework.core.env.Environment;
+import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.web.socket.config.annotation.EnableWebSocket;
 import org.springframework.web.socket.config.annotation.ServletWebSocketHandlerRegistry;
 import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
@@ -18,6 +19,7 @@ import javax.inject.Inject;
  * Created by aalexeev on 11/24/16.
  */
 @Configuration
+@EnableScheduling
 @EnableWebSocket
 @PropertySource("classpath:juick.conf")
 class WebsocketConfiguration implements WebSocketConfigurer {
-- 
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