From ec84a2bfbbe5cb9f51d4fdfab66b8d23a44d8008 Mon Sep 17 00:00:00 2001
From: Neil Dorin <ndorin@pepperdash.com>
Date: Wed, 10 Jun 2026 13:34:05 -0600
Subject: [PATCH] fix: handle null properties in DeviceMessageBase and
 DeviceStateMessageBase

---
 .../Messengers/DeviceMessageBase.cs                       | 8 ++++----
 .../Messengers/DeviceStateMessageBase.cs                  | 3 ++-
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/PepperDash.Essentials.MobileControl.Messengers/Messengers/DeviceMessageBase.cs b/src/PepperDash.Essentials.MobileControl.Messengers/Messengers/DeviceMessageBase.cs
index 54a6ec36..0198df2f 100644
--- a/src/PepperDash.Essentials.MobileControl.Messengers/Messengers/DeviceMessageBase.cs
+++ b/src/PepperDash.Essentials.MobileControl.Messengers/Messengers/DeviceMessageBase.cs
@@ -10,7 +10,7 @@ namespace PepperDash.Essentials.AppServer.Messengers
     /// <summary>
     /// The device key
     /// </summary>
-    [JsonProperty("key")]
+    [JsonProperty("key", NullValueHandling = NullValueHandling.Ignore)]
     /// <summary>
     /// Gets or sets the Key
     /// </summary>
@@ -19,19 +19,19 @@ namespace PepperDash.Essentials.AppServer.Messengers
     /// <summary>
     /// The device name
     /// </summary>
-    [JsonProperty("name")]
+    [JsonProperty("name", NullValueHandling = NullValueHandling.Ignore)]
     public string Name { get; set; }
 
     /// <summary>
     /// The type of the message class
     /// </summary>
-    [JsonProperty("messageType")]
+    [JsonProperty("messageType", NullValueHandling = NullValueHandling.Ignore)]
     public string MessageType => GetType().Name;
 
     /// <summary>
     /// Gets or sets the MessageBasePath
     /// </summary>
-    [JsonProperty("messageBasePath")]
+    [JsonProperty("messageBasePath", NullValueHandling = NullValueHandling.Ignore)]
 
     public string MessageBasePath { get; set; }
   }
diff --git a/src/PepperDash.Essentials.MobileControl.Messengers/Messengers/DeviceStateMessageBase.cs b/src/PepperDash.Essentials.MobileControl.Messengers/Messengers/DeviceStateMessageBase.cs
index a5df51a8..4241b69c 100644
--- a/src/PepperDash.Essentials.MobileControl.Messengers/Messengers/DeviceStateMessageBase.cs
+++ b/src/PepperDash.Essentials.MobileControl.Messengers/Messengers/DeviceStateMessageBase.cs
@@ -12,7 +12,8 @@ namespace PepperDash.Essentials.AppServer.Messengers
     /// <summary>
     /// The interfaces implmented by the device sending the messsage
     /// </summary>
-    [JsonProperty("interfaces")]
+    [JsonProperty("interfaces", NullValueHandling = NullValueHandling.Ignore)]
+    [Obsolete("Interfaces is no longer supported and will be removed in a future release.  Interfaces for all devices are now retrieved via the /joinroom endpoint in the MobileControlWebsocketServer")]
     public List<string> Interfaces { get; private set; }
 
     /// <summary>