From c9df626bf2472174a442216d345cd2a89ec86d1b Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Thu, 23 Jul 2020 10:03:52 +0200
Subject: Update client list every 2 mins for better timeout handling

AvailableClient.isTimeout() is only called when the list is updated,
which might be very infrequently. Some of its checks are better run
frequently, as to not accidentally kill a connection to early.
---
 .../de/bwlehrpool/bwlp_guac/ConnectionManager.java   | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/ConnectionManager.java b/src/main/java/de/bwlehrpool/bwlp_guac/ConnectionManager.java
index 01bf2fc..7e64926 100644
--- a/src/main/java/de/bwlehrpool/bwlp_guac/ConnectionManager.java
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/ConnectionManager.java
@@ -56,6 +56,26 @@ public class ConnectionManager {
 	 */
 	private static final LinkedHashMap<Integer, JsonGroup> groupPool = new LinkedHashMap<Integer, JsonGroup>();
 
+	private static final Thread listUpdater;
+	
+	static {
+		listUpdater = new Thread() {
+			@Override
+			public void run() {
+				for (;;) {
+					try {
+						Thread.sleep(120000);
+						updateList();
+					} catch (InterruptedException e) {
+						LOGGER.info("Stopping list fetch thread");
+						return;
+					}
+				}
+			}
+		};
+		listUpdater.setDaemon(true);
+		listUpdater.start();
+	}
 	
 	public static JsonGroup getGroup(int id) {
 		synchronized (clientPool) {
-- 
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