From ed4f84cc578e443a341486b995a5aebf77762d1c Mon Sep 17 00:00:00 2001
From: Grant Limberg <grant.limberg@zerotier.com>
Date: Wed, 8 Mar 2017 14:54:58 -0800
Subject: Fix exception thrown in NetworkMonitor thread that can cause the UI
 to stop polling service for updates

---
 windows/WinUI/NetworkMonitor.cs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'windows')

diff --git a/windows/WinUI/NetworkMonitor.cs b/windows/WinUI/NetworkMonitor.cs
index 4877d34c..c276079d 100644
--- a/windows/WinUI/NetworkMonitor.cs
+++ b/windows/WinUI/NetworkMonitor.cs
@@ -102,6 +102,11 @@ namespace WinUI
 
         private void apiNetworkCallback(List<ZeroTierNetwork> networks)
         {
+						if (networks == null)
+						{
+								return;
+						}
+
             lock (_knownNetworks)
             {
                 _knownNetworks = _knownNetworks.Union(networks, new NetworkEqualityComparer()).ToList();
-- 
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