From d8eb036af1ec8b9911e0f7ab8cf948204fb0ad0c Mon Sep 17 00:00:00 2001
From: Gerhard Muth <gerhard.muth@gmx.de>
Date: Tue, 4 Jun 2024 11:36:01 +0200
Subject: [PATCH] bug fix for issue #25

---
 src/main/kotlin/de/gmuth/ipp/client/IppSubscription.kt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/kotlin/de/gmuth/ipp/client/IppSubscription.kt b/src/main/kotlin/de/gmuth/ipp/client/IppSubscription.kt
index 7f720507..b5849926 100644
--- a/src/main/kotlin/de/gmuth/ipp/client/IppSubscription.kt
+++ b/src/main/kotlin/de/gmuth/ipp/client/IppSubscription.kt
@@ -135,7 +135,7 @@ class IppSubscription(
         }
 
     fun expired() = expiresAt != null && now().isAfter(expiresAt)
-    fun expiryAvailable() = leaseStartedAt != null && !leaseDuration.isZero
+    fun expiryAvailable() = leaseStartedAt != null && attributes.containsKey("notify-lease-duration") && !leaseDuration.isZero
 
     @JvmOverloads
     fun pollAndHandleNotifications(