fix: guard PartitionPresent getter against null sensor feedback

EssentialsPartitionController.PartitionPresent threw a NullReferenceException in Auto mode when the partition sensor's PartitionPresentFeedback was not yet initialized, breaking combiner fullStatus serialization to MC clients. Fall back to the last-known _partitionPresent value instead of dereferencing a null sensor feedback.

src/PepperDash.Core/Logging/DebugWebsocketSink.cs

@@ -72,6 +72,20 @@ namespace PepperDash.Core
         /// </summary>
         public bool IsRunning { get => _httpsServer?.IsListening ?? false; }
 
+        /// <summary>
+        /// Gets a value indicating whether there are active WebSocket connections.
+        /// </summary>
+        public bool HasActiveConnections
+        {
+            get
+            {
+                if (_httpsServer == null || !_httpsServer.IsListening) return false;
+                var service = _httpsServer.WebSocketServices[_path];
+                if (service == null) return false;
+                return service.Sessions.Count > 0;
+            }
+        }
+
 
         private readonly ITextFormatter _textFormatter;
 
@@ -217,6 +231,8 @@ namespace PepperDash.Core
         {
             Debug.LogInformation("Starting Websocket Server on port: {0}", port);
 
+            
+
 
             Start(port, CertPath, _certificatePassword);
         }

src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlMessengerWithSubscriptions.cs

@@ -1,10 +1,12 @@
+using System;
 using PepperDash.Core;
 
 namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
 {
   /// <summary>
-  /// Defines the contract for IMobileControlMessenger
+  /// Obsolete: messengers are subscription based by default; use IMobileControlMessenger instead.
   /// </summary>
+  [Obsolete("This interface is obsolete and will be removed in a future version. All messengers are now subscription based.")]
   public interface IMobileControlMessengerWithSubscriptions : IMobileControlMessenger
   {
     /// <summary>

src/PepperDash.Essentials.Core/PartitionSensor/EssentialsPartitionController.cs

@@ -30,7 +30,7 @@ namespace PepperDash.Essentials.Core
             {
                 if (IsInAutoMode)
                 {
-                    return _partitionSensor.PartitionPresentFeedback.BoolValue;
+                    return _partitionSensor?.PartitionPresentFeedback?.BoolValue ?? _partitionPresent;
                 }
 
                 return _partitionPresent;

src/PepperDash.Essentials.Core/Room/Combining/EssentialsRoomCombiner.cs

@@ -5,6 +5,7 @@ using Serilog.Events;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -17,7 +18,7 @@ namespace PepperDash.Essentials.Core
     /// combinations  based on partition states and predefined scenarios. It supports both automatic and manual modes 
     /// for managing room combinations. In automatic mode, the device determines the current room  combination scenario
     /// based on partition sensor states. In manual mode, scenarios can be set  explicitly by the user.</remarks>
-    public class EssentialsRoomCombiner : EssentialsDevice, IEssentialsRoomCombiner
+    public class EssentialsRoomCombiner : EssentialsDevice, IEssentialsRoomCombinerWithOperationStatus
     {
         private EssentialsRoomCombinerPropertiesConfig _propertiesConfig;
 
@@ -75,10 +76,29 @@ namespace PepperDash.Essentials.Core
 
         private CTimer _scenarioChangeDebounceTimer;
 
+        private CTimer _combinationOperationTimeoutTimer;
+
         private int _scenarioChangeDebounceTimeSeconds = 10; // default to 10s
 
+        private const int DefaultCombinationOperationTimeoutSeconds = 300;
+
+        private int _combinationOperationTimeoutSeconds = DefaultCombinationOperationTimeoutSeconds;
+
         private Mutex _scenarioChange = new Mutex();
 
+        private readonly object _combinationOperationLock = new object();
+
+        private readonly List<IKeyed> _operationStatusProviderDevices = new List<IKeyed>();
+
+        private string _pendingCompletionOperationId;
+
+        private string _pendingCompletionScenarioKey;
+
+        private CombinationOperationStatus _combinationOperation = new CombinationOperationStatus
+        {
+            State = CombinationOperationState.Idle
+        };
+
         /// <summary>
         /// Initializes a new instance of the <see cref="EssentialsRoomCombiner"/> class, which manages room combination
         /// scenarios and partition states.
@@ -105,6 +125,12 @@ namespace PepperDash.Essentials.Core
                 _scenarioChangeDebounceTimeSeconds = _propertiesConfig.ScenarioChangeDebounceTimeSeconds;
             }
 
+            if (_propertiesConfig.CombinationOperationTimeoutSeconds.HasValue
+                && _propertiesConfig.CombinationOperationTimeoutSeconds.Value > 0)
+            {
+                _combinationOperationTimeoutSeconds = _propertiesConfig.CombinationOperationTimeoutSeconds.Value;
+            }
+
             IsInAutoModeFeedback = new BoolFeedback(() => _isInAutoMode);
 
             // default to auto mode
@@ -133,6 +159,8 @@ namespace PepperDash.Essentials.Core
             // connected and initialized
             DeviceManager.AllDevicesInitialized += (o, a) =>
             {
+                InitializeOperationStatusProviders();
+
                 if (IsInAutoMode)
                 {
                     DetermineRoomCombinationScenario();
@@ -256,13 +284,19 @@ namespace PepperDash.Essentials.Core
 
         private async Task ChangeScenario(IRoomCombinationScenario newScenario)
         {
-            
+            if (newScenario == _currentScenario)
+            {
+                return;
+            }
 
-                if (newScenario == _currentScenario)
+            var operationId = SetCombinationOperationStatus(
-                {
+                CombinationOperationState.InProgress,
-                    return;
+                newScenario != null ? newScenario.Key : null,
-                }
+                null,
+                true);
 
+            try
+            {
                 // Deactivate the old scenario first
                 if (_currentScenario != null)
                 {
@@ -281,7 +315,20 @@ namespace PepperDash.Essentials.Core
 
                 RoomCombinationScenarioChanged?.Invoke(this, new EventArgs());
 
-            
+                TryCompleteCombinationOperationIfReady(
+                    operationId,
+                    _currentScenario != null ? _currentScenario.Key : null);
+            }
+            catch (Exception ex)
+            {
+                this.LogException(ex, "Error changing room combination scenario");
+
+                TrySetCombinationOperationTerminalStatus(
+                    operationId,
+                    CombinationOperationState.Failed,
+                    newScenario != null ? newScenario.Key : null,
+                    "Combination operation failed");
+            }
         }
 
         #region IEssentialsRoomCombiner Members
@@ -293,6 +340,11 @@ namespace PepperDash.Essentials.Core
         /// changes. Subscribers can use this event to update their logic or UI based on the new scenario.</remarks>
         public event EventHandler<EventArgs> RoomCombinationScenarioChanged;
 
+        /// <summary>
+        /// Occurs when the room combination operation status changes.
+        /// </summary>
+        public event EventHandler<EventArgs> CombinationOperationStatusChanged;
+
         /// <summary>
         /// Gets the current room combination scenario.
         /// </summary>
@@ -304,6 +356,20 @@ namespace PepperDash.Essentials.Core
             }
         }
 
+        /// <summary>
+        /// Gets the current room combination operation status.
+        /// </summary>
+        public CombinationOperationStatus CombinationOperation
+        {
+            get
+            {
+                lock (_combinationOperationLock)
+                {
+                    return CloneCombinationOperationStatus(_combinationOperation);
+                }
+            }
+        }
+
         /// <summary>
         /// Gets or sets the IsInAutoModeFeedback
         /// </summary>
@@ -455,6 +521,299 @@ namespace PepperDash.Essentials.Core
         }
 
         #endregion
+
+        private string SetCombinationOperationStatus(
+            CombinationOperationState state,
+            string scenarioKey,
+            string message,
+            bool resetStartedUtc)
+        {
+            string operationId;
+
+            lock (_combinationOperationLock)
+            {
+                if (resetStartedUtc)
+                {
+                    _combinationOperation = new CombinationOperationStatus
+                    {
+                        OperationId = Guid.NewGuid().ToString(),
+                        ScenarioKey = scenarioKey,
+                        StartedUtc = DateTime.UtcNow.ToString("o"),
+                        State = state,
+                        Message = message
+                    };
+                }
+                else
+                {
+                    _combinationOperation.ScenarioKey = scenarioKey ?? _combinationOperation.ScenarioKey;
+                    _combinationOperation.State = state;
+                    _combinationOperation.Message = message;
+                }
+
+                if (state == CombinationOperationState.InProgress)
+                {
+                    _pendingCompletionOperationId = null;
+                    _pendingCompletionScenarioKey = null;
+                }
+
+                operationId = _combinationOperation.OperationId;
+            }
+
+            if (state == CombinationOperationState.InProgress)
+            {
+                StartCombinationOperationTimeout(operationId);
+            }
+            else if (state == CombinationOperationState.Completed
+                || state == CombinationOperationState.Failed
+                || state == CombinationOperationState.TimedOut
+                || state == CombinationOperationState.Idle)
+            {
+                StopCombinationOperationTimeout();
+            }
+
+            CombinationOperationStatusChanged?.Invoke(this, EventArgs.Empty);
+
+            return operationId;
+        }
+
+        private void TrySetCombinationOperationTerminalStatus(
+            string operationId,
+            CombinationOperationState state,
+            string scenarioKey,
+            string message)
+        {
+            var statusUpdated = false;
+
+            lock (_combinationOperationLock)
+            {
+                if (_combinationOperation == null
+                    || !string.Equals(_combinationOperation.OperationId, operationId, StringComparison.Ordinal)
+                    || _combinationOperation.State != CombinationOperationState.InProgress)
+                {
+                    return;
+                }
+
+                _combinationOperation.ScenarioKey = scenarioKey ?? _combinationOperation.ScenarioKey;
+                _combinationOperation.State = state;
+                _combinationOperation.Message = message;
+                _pendingCompletionOperationId = null;
+                _pendingCompletionScenarioKey = null;
+                statusUpdated = true;
+            }
+
+            if (!statusUpdated)
+            {
+                return;
+            }
+
+            StopCombinationOperationTimeout();
+            CombinationOperationStatusChanged?.Invoke(this, EventArgs.Empty);
+        }
+
+        private void StartCombinationOperationTimeout(string operationId)
+        {
+            StopCombinationOperationTimeout();
+
+            if (_combinationOperationTimeoutSeconds <= 0 || string.IsNullOrEmpty(operationId))
+            {
+                return;
+            }
+
+            _combinationOperationTimeoutTimer = new CTimer(
+                _ => HandleCombinationOperationTimeout(operationId),
+                _combinationOperationTimeoutSeconds * 1000);
+        }
+
+        private void StopCombinationOperationTimeout()
+        {
+            if (_combinationOperationTimeoutTimer == null)
+            {
+                return;
+            }
+
+            _combinationOperationTimeoutTimer.Dispose();
+            _combinationOperationTimeoutTimer = null;
+        }
+
+        private void HandleCombinationOperationTimeout(string operationId)
+        {
+            TrySetCombinationOperationTerminalStatus(
+                operationId,
+                CombinationOperationState.TimedOut,
+                null,
+                "Combination operation timed out");
+        }
+
+        private void InitializeOperationStatusProviders()
+        {
+            _operationStatusProviderDevices.Clear();
+
+            foreach (var device in DeviceManager.AllDevices)
+            {
+                if (IsOperationStatusProviderDevice(device))
+                {
+                    _operationStatusProviderDevices.Add(device);
+                    SubscribeToOperationStatusProviderChanged(device);
+                }
+            }
+
+            this.LogDebug("Room combiner {combinerKey} found {providerCount} post-combination status provider(s)", Key, _operationStatusProviderDevices.Count);
+        }
+
+        private static bool IsOperationStatusProviderDevice(object device)
+        {
+            if (device == null)
+            {
+                return false;
+            }
+
+            var type = device.GetType();
+
+            var roomCombinerKeyProperty = type.GetProperty("RoomCombinerKey", BindingFlags.Instance | BindingFlags.Public);
+            var scenarioReconciledProperty = type.GetProperty("ScenarioReconciled", BindingFlags.Instance | BindingFlags.Public);
+            var scenarioReconciledScenarioKeyProperty = type.GetProperty("ScenarioReconciledScenarioKey", BindingFlags.Instance | BindingFlags.Public);
+
+            return roomCombinerKeyProperty != null
+                && roomCombinerKeyProperty.PropertyType == typeof(string)
+                && roomCombinerKeyProperty.CanRead
+                && scenarioReconciledProperty != null
+                && scenarioReconciledProperty.PropertyType == typeof(bool)
+                && scenarioReconciledProperty.CanRead
+                && scenarioReconciledScenarioKeyProperty != null
+                && scenarioReconciledScenarioKeyProperty.PropertyType == typeof(string)
+                && scenarioReconciledScenarioKeyProperty.CanRead;
+        }
+
+        private void SubscribeToOperationStatusProviderChanged(object device)
+        {
+            var eventInfo = device.GetType().GetEvent("ScenarioReconciledChanged", BindingFlags.Instance | BindingFlags.Public);
+            if (eventInfo == null)
+            {
+                return;
+            }
+
+            if (eventInfo.EventHandlerType != typeof(EventHandler<EventArgs>))
+            {
+                this.LogDebug("Room combiner {combinerKey} skipping provider event subscription for {providerType}: unsupported event type {eventType}", Key, device.GetType().Name, eventInfo.EventHandlerType);
+                return;
+            }
+
+            eventInfo.AddEventHandler(device, new EventHandler<EventArgs>(OperationStatusProvider_ScenarioReconciledChanged));
+        }
+
+        private void OperationStatusProvider_ScenarioReconciledChanged(object sender, EventArgs e)
+        {
+            TryCompletePendingCombinationOperation();
+        }
+
+        private void TryCompletePendingCombinationOperation()
+        {
+            string operationId;
+            string scenarioKey;
+
+            lock (_combinationOperationLock)
+            {
+                operationId = _pendingCompletionOperationId;
+                scenarioKey = _pendingCompletionScenarioKey;
+            }
+
+            if (string.IsNullOrEmpty(operationId))
+            {
+                return;
+            }
+
+            TryCompleteCombinationOperationIfReady(operationId, scenarioKey);
+        }
+
+        private void TryCompleteCombinationOperationIfReady(string operationId, string scenarioKey)
+        {
+            if (string.IsNullOrEmpty(operationId))
+            {
+                return;
+            }
+
+            if (!AreOperationStatusProvidersSatisfied(scenarioKey))
+            {
+                lock (_combinationOperationLock)
+                {
+                    if (_combinationOperation != null
+                        && string.Equals(_combinationOperation.OperationId, operationId, StringComparison.Ordinal)
+                        && _combinationOperation.State == CombinationOperationState.InProgress)
+                    {
+                        _pendingCompletionOperationId = operationId;
+                        _pendingCompletionScenarioKey = scenarioKey;
+                    }
+                }
+
+                return;
+            }
+
+            TrySetCombinationOperationTerminalStatus(
+                operationId,
+                CombinationOperationState.Completed,
+                scenarioKey,
+                null);
+        }
+
+        private bool AreOperationStatusProvidersSatisfied(string scenarioKey)
+        {
+            var matchingProviders = _operationStatusProviderDevices
+                .Where(d => string.Equals(GetStringPropertyValue(d, "RoomCombinerKey"), Key, StringComparison.OrdinalIgnoreCase))
+                .ToList();
+
+            if (!matchingProviders.Any())
+            {
+                return true;
+            }
+
+            foreach (var provider in matchingProviders)
+            {
+                var providerScenarioReconciled = GetBoolPropertyValue(provider, "ScenarioReconciled");
+                var providerScenarioKey = GetStringPropertyValue(provider, "ScenarioReconciledScenarioKey");
+
+                if (!providerScenarioReconciled
+                    || !string.Equals(providerScenarioKey, scenarioKey, StringComparison.OrdinalIgnoreCase))
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        private static string GetStringPropertyValue(object target, string propertyName)
+        {
+            var propertyInfo = target.GetType().GetProperty(propertyName, BindingFlags.Instance | BindingFlags.Public);
+            return propertyInfo != null ? propertyInfo.GetValue(target, null) as string : null;
+        }
+
+        private static bool GetBoolPropertyValue(object target, string propertyName)
+        {
+            var propertyInfo = target.GetType().GetProperty(propertyName, BindingFlags.Instance | BindingFlags.Public);
+            if (propertyInfo == null || propertyInfo.PropertyType != typeof(bool))
+            {
+                return false;
+            }
+
+            return (bool)propertyInfo.GetValue(target, null);
+        }
+
+        private static CombinationOperationStatus CloneCombinationOperationStatus(CombinationOperationStatus status)
+        {
+            if (status == null)
+            {
+                return null;
+            }
+
+            return new CombinationOperationStatus
+            {
+                OperationId = status.OperationId,
+                ScenarioKey = status.ScenarioKey,
+                StartedUtc = status.StartedUtc,
+                State = status.State,
+                Message = status.Message
+            };
+        }
     }
 
     /// <summary>

src/PepperDash.Essentials.Core/Room/Combining/EssentialsRoomCombinerPropertiesConfig.cs

@@ -11,10 +11,10 @@ namespace PepperDash.Essentials.Core
     /// </summary>
     public class EssentialsRoomCombinerPropertiesConfig
     {
-        /// <summary>
+        /// <summary>
-        /// Gets or sets a value indicating whether the system operates in automatic mode.
+        /// Gets or sets a value indicating whether the system operates in automatic mode.
-        /// <remarks>Some systems don't have partitions sensors, and show shouldn't allow auto mode to be turned on. When this is true in the configuration, 
+        /// <remarks>Some systems don't have partitions sensors, and show shouldn't allow auto mode to be turned on. When this is true in the configuration, 
-        /// auto mode won't be allowed to be turned on.</remarks>
+        /// auto mode won't be allowed to be turned on.</remarks>
         /// </summary>
         [JsonProperty("disableAutoMode")]
         public bool DisableAutoMode { get; set; }
@@ -49,11 +49,18 @@ namespace PepperDash.Essentials.Core
         [JsonProperty("defaultScenarioKey")]
         public string defaultScenarioKey { get; set; }
 
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the debounce time, in seconds, for scenario changes.
+        /// Gets or sets the debounce time, in seconds, for scenario changes.
         /// </summary>
         [JsonProperty("scenarioChangeDebounceTimeSeconds")]
         public int ScenarioChangeDebounceTimeSeconds { get; set; }
+
+        /// <summary>
+        /// Gets or sets the timeout, in seconds, for room combination operations.
+        /// When null or less than or equal to zero, the default timeout is used.
+        /// </summary>
+        [JsonProperty("combinationOperationTimeoutSeconds", NullValueHandling = NullValueHandling.Ignore)]
+        public int? CombinationOperationTimeoutSeconds { get; set; }
     }
 
     /// <summary>
@@ -61,14 +68,14 @@ namespace PepperDash.Essentials.Core
     /// </summary>
     public class PartitionConfig : IKeyName
     {
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the unique key associated with the object.
+        /// Gets or sets the unique key associated with the object.
         /// </summary>
         [JsonProperty("key")]
         public string Key { get; set; }
 
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the name associated with the object.
+        /// Gets or sets the name associated with the object.
         /// </summary>
         [JsonProperty("name")]
         public string Name { get; set; }
@@ -91,26 +98,26 @@ namespace PepperDash.Essentials.Core
     /// </summary>
     public class RoomCombinationScenarioConfig : IKeyName
     {
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the key associated with the object.
+        /// Gets or sets the key associated with the object.
         /// </summary>
         [JsonProperty("key")]
         public string Key { get; set; }
 
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the name associated with the object.
+        /// Gets or sets the name associated with the object.
         /// </summary>
         [JsonProperty("name")]
         public string Name { get; set; }
 
-        /// <summary>
+        /// <summary>
-        /// Gets or sets a value indicating whether to hide this scenario in the UI.
+        /// Gets or sets a value indicating whether to hide this scenario in the UI.
         /// </summary>
         [JsonProperty("hideInUi", NullValueHandling = NullValueHandling.Ignore)]
-        public bool HideInUi { get; set; }
+        public bool HideInUi { get; set; }
-
+
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the collection of partition states.
+        /// Gets or sets the collection of partition states.
         /// </summary>
         [JsonProperty("partitionStates")]
         public List<PartitionState> PartitionStates { get; set; }
@@ -121,14 +128,14 @@ namespace PepperDash.Essentials.Core
         [JsonProperty("uiMap")]
         public Dictionary<string, string> UiMap { get; set; }
 
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the list of actions to be performed during device activation.
+        /// Gets or sets the list of actions to be performed during device activation.
         /// </summary>
         [JsonProperty("activationActions")]
         public List<DeviceActionWrapper> ActivationActions { get; set; }
 
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the list of actions to be performed when a device is deactivated.
+        /// Gets or sets the list of actions to be performed when a device is deactivated.
         /// </summary>
         [JsonProperty("deactivationActions")]
         public List<DeviceActionWrapper> DeactivationActions { get; set; }    
@@ -139,14 +146,14 @@ namespace PepperDash.Essentials.Core
     /// </summary>
     public class PartitionState
     {
-        /// <summary>
+        /// <summary>
-        /// Gets or sets the partition key used to group and organize data within a storage system.
+        /// Gets or sets the partition key used to group and organize data within a storage system.
         /// </summary>
         [JsonProperty("partitionKey")]
         public string PartitionKey { get; set; }
 
-        /// <summary>
+        /// <summary>
-        /// Gets or sets a value indicating whether a partition is currently present.
+        /// Gets or sets a value indicating whether a partition is currently present.
         /// </summary>
         [JsonProperty("partitionSensedState")]
         public bool PartitionPresent { get; set; }

src/PepperDash.Essentials.Core/Room/Combining/IEssentialsRoomCombiner.cs

@@ -16,12 +16,14 @@ namespace PepperDash.Essentials.Core
         /// </summary>
         event EventHandler<EventArgs> RoomCombinationScenarioChanged;
 
+
         /// <summary>
         /// The current room combination scenario
         /// </summary>
         [JsonProperty("currentScenario")]
         IRoomCombinationScenario CurrentScenario { get; }
 
+
         /// <summary>
         /// When true, indicates the current mode is auto mode
         /// </summary>
@@ -85,6 +87,56 @@ namespace PepperDash.Essentials.Core
         void SetRoomCombinationScenario(string scenarioKey);
     }
 
+    /// <summary>
+    /// Optional extension for room combiners that provide operation lifecycle status.
+    /// </summary>
+    public interface IEssentialsRoomCombinerWithOperationStatus : IEssentialsRoomCombiner
+    {
+        /// <summary>
+        /// Indicates that the room combination operation status has changed.
+        /// </summary>
+        event EventHandler<EventArgs> CombinationOperationStatusChanged;
+
+        /// <summary>
+        /// Gets the current room combination operation status.
+        /// </summary>
+        [JsonProperty("combinationOperation")]
+        CombinationOperationStatus CombinationOperation { get; }
+    }
+
+    /// <summary>
+    /// Defines lifecycle states for a room combination operation.
+    /// </summary>
+    public enum CombinationOperationState
+    {
+        Idle,
+        InProgress,
+        Completed,
+        Failed,
+        TimedOut
+    }
+
+    /// <summary>
+    /// Represents room combination operation status details.
+    /// </summary>
+    public class CombinationOperationStatus
+    {
+        [JsonProperty("operationId", NullValueHandling = NullValueHandling.Ignore)]
+        public string OperationId { get; set; }
+
+        [JsonProperty("scenarioKey", NullValueHandling = NullValueHandling.Ignore)]
+        public string ScenarioKey { get; set; }
+
+        [JsonProperty("startedUtc", NullValueHandling = NullValueHandling.Ignore)]
+        public string StartedUtc { get; set; }
+
+        [JsonProperty("state")]
+        public CombinationOperationState State { get; set; }
+
+        [JsonProperty("message", NullValueHandling = NullValueHandling.Ignore)]
+        public string Message { get; set; }
+    }
+
     /// <summary>
     /// Represents a scenario for combining rooms, including activation, deactivation, and associated state.
     /// </summary>

src/PepperDash.Essentials.Core/Secrets/SecretsManager.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using Crestron.SimplSharp;
 using PepperDash.Core;
+using PepperDash.Core.Logging;
 using Serilog.Events;
 
 namespace PepperDash.Essentials.Core
@@ -296,19 +297,14 @@ namespace PepperDash.Essentials.Core
         {
             var secretPresent = provider.TestSecret(key);
 
-            Debug.LogMessage(LogEventLevel.Verbose, provider, "SecretsProvider {0} {1} contain a secret entry for {2}", provider.Key, secretPresent ? "does" : "does not", key);
+            provider.LogVerbose("SecretsProvider {0} {1} contain a secret entry for {2}", provider.Key, secretPresent ? "does" : "does not", key);
 
             if (!secretPresent)
                 return
-                    String.Format(
+                    $"Unable to update secret for {provider.Key}:{key} - Please use the 'SetSecret' command to modify it";
-                        "Unable to update secret for {0}:{1} - Please use the 'SetSecret' command to modify it");
             var response = provider.SetSecret(key, secret)
-                ? String.Format(
+                ? $"Secret successfully set for {provider.Key}:{key}"
-                    "Secret successfully set for {0}:{1}",
+                : $"Unable to set secret for {provider.Key}:{key}";
-                    provider.Key, key)
-                : String.Format(
-                    "Unable to set secret for {0}:{1}",
-                    provider.Key, key);
             return response;
         }
 
@@ -316,19 +312,14 @@ namespace PepperDash.Essentials.Core
         {
             var secretPresent = provider.TestSecret(key);
 
-            Debug.LogMessage(LogEventLevel.Verbose, provider, "SecretsProvider {0} {1} contain a secret entry for {2}", provider.Key, secretPresent ? "does" : "does not", key);
+            provider.LogVerbose("SecretsProvider {0} {1} contain a secret entry for {2}", provider.Key, secretPresent ? "does" : "does not", key);
 
             if (secretPresent)
                 return
-                    String.Format(
+                    $"Unable to set secret for {provider.Key}:{key} - Please use the 'UpdateSecret' command to modify it";
-                        "Unable to set secret for {0}:{1} - Please use the 'UpdateSecret' command to modify it");
             var response = provider.SetSecret(key, secret)
-                ? String.Format(
+                ? $"Secret successfully set for {provider.Key}:{key}"
-                    "Secret successfully set for {0}:{1}",
+                : $"Unable to set secret for {provider.Key}:{key}";
-                    provider.Key, key)
-                : String.Format(
-                    "Unable to set secret for {0}:{1}",
-                    provider.Key, key);
             return response;
 
         }
@@ -377,15 +368,10 @@ namespace PepperDash.Essentials.Core
 
             var key = args[1];
 
-
             provider.SetSecret(key, "");
             response = provider.SetSecret(key, "")
-                ? String.Format(
+                ? $"Secret successfully deleted for {provider.Key}:{key}"
-                    "Secret successfully deleted for {0}:{1}",
+                : $"Unable to delete secret for {provider.Key}:{key}";
-                    provider.Key, key)
-                : String.Format(
-                    "Unable to delete secret for {0}:{1}",
-                    provider.Key, key);
             CrestronConsole.ConsoleCommandResponse(response);
             return;
 

src/PepperDash.Essentials.Core/Web/RequestHandlers/DebugSessionRequestHandler.cs

@@ -17,7 +17,10 @@ namespace PepperDash.Essentials.Core.Web.RequestHandlers
     /// Represents a DebugSessionRequestHandler
     /// </summary>
     public class DebugSessionRequestHandler : WebApiBaseRequestHandler
-    {    
+    {
+        private CTimer _portForwardTimeoutTimer;
+        private readonly object _timerLock = new object();
+
         /// <summary>
         /// Constructor
         /// </summary>
@@ -48,6 +51,7 @@ namespace PepperDash.Essentials.Core.Web.RequestHandlers
                     CrestronEthernetHelper.ETHERNET_PARAMETER_TO_GET.GET_CURRENT_IP_ADDRESS, 0);
 
                 var port = 0;
+                string csIp = null;
 
                 if (!Debug.WebsocketSink.IsRunning)
                 {
@@ -57,15 +61,18 @@ namespace PepperDash.Essentials.Core.Web.RequestHandlers
                     // Start the WS Server
                     Debug.WebsocketSink.StartServerAndSetPort(port);
                     Debug.SetWebSocketMinimumDebugLevel(Serilog.Events.LogEventLevel.Verbose);
+                }
 
-                    // Attempt to forward the port to the CS LAN
+                // Attempt to get the CS LAN IP and forward the port
-                    try
+                try
+                {
+                    var csAdapterId = CrestronEthernetHelper.GetAdapterdIdForSpecifiedAdapterType(
+                        EthernetAdapterType.EthernetCSAdapter);
+                    csIp = CrestronEthernetHelper.GetEthernetParameter(
+                        CrestronEthernetHelper.ETHERNET_PARAMETER_TO_GET.GET_CURRENT_IP_ADDRESS, csAdapterId);
+
+                    if (port > 0)
                     {
-                        var csAdapterId = CrestronEthernetHelper.GetAdapterdIdForSpecifiedAdapterType(
-                            EthernetAdapterType.EthernetCSAdapter);
-                        var csIp = CrestronEthernetHelper.GetEthernetParameter(
-                            CrestronEthernetHelper.ETHERNET_PARAMETER_TO_GET.GET_CURRENT_IP_ADDRESS, csAdapterId);
-
                         var result = CrestronEthernetHelper.AddPortForwarding(
                             (ushort)port, (ushort)port, csIp,
                             CrestronEthernetHelper.ePortMapTransport.TCP);
@@ -77,26 +84,29 @@ namespace PepperDash.Essentials.Core.Web.RequestHandlers
                         else
                         {
                             Debug.LogMessage(LogEventLevel.Information, "Port {0} forwarded to CS LAN for debug websocket", port);
+                            StartPortForwardTimeout(port, csIp);
                         }
                     }
-                    catch (ArgumentException)
+                }
-                    {
+                catch (ArgumentException)
-                        Debug.LogMessage(LogEventLevel.Debug, "This processor does not have a CS LAN adapter; skipping port forwarding");
+                {
-                    }
+                    Debug.LogMessage(LogEventLevel.Debug, "This processor does not have a CS LAN adapter; skipping port forwarding");
-                    catch (Exception ex)
+                }
-                    {
+                catch (Exception ex)
-                        Debug.LogMessage(LogEventLevel.Warning, "Error automatically forwarding debug websocket port to CS LAN: {0}", ex.Message);
+                {
-                    }
+                    Debug.LogMessage(LogEventLevel.Warning, "Error automatically forwarding debug websocket port to CS LAN: {0}", ex.Message);
                 }
 
                 var url = Debug.WebsocketSink.Url;
 
-                object data = new
+                var data = new
                 {
-                    url = Debug.WebsocketSink.Url
+                    url = Debug.WebsocketSink.Url,
+                    fallbackUrl = csIp != null ? url.Replace(csIp, ip) : null
                 };
 
                 Debug.LogMessage(LogEventLevel.Information, "Debug Session URL: {0}", url);
+                Debug.LogMessage(LogEventLevel.Information, "Fallback Debug Session URL: {0}", data.fallbackUrl);
 
                 // Return the port number with the full url of the WS Server
                 var res = JsonConvert.SerializeObject(data);
@@ -120,6 +130,8 @@ namespace PepperDash.Essentials.Core.Web.RequestHandlers
         /// <param name="context"></param>
         protected override void HandlePost(HttpCwsContext context)
         {
+            CancelPortForwardTimeout();
+
             var port = Debug.WebsocketSink.Port;
 
             Debug.WebsocketSink.StopServer();
@@ -132,17 +144,24 @@ namespace PepperDash.Essentials.Core.Web.RequestHandlers
                 var csIp = CrestronEthernetHelper.GetEthernetParameter(
                     CrestronEthernetHelper.ETHERNET_PARAMETER_TO_GET.GET_CURRENT_IP_ADDRESS, csAdapterId);
 
-                var result = CrestronEthernetHelper.RemovePortForwarding(
+                if (port <= 0)
-                    (ushort)port, (ushort)port, csIp,
-                    CrestronEthernetHelper.ePortMapTransport.TCP);
-
-                if (result != CrestronEthernetHelper.PortForwardingUserPatRetCodes.NoErr)
                 {
-                    Debug.LogMessage(LogEventLevel.Warning, "Error removing port forwarding for debug websocket: {0}", result);
+                    Debug.LogMessage(LogEventLevel.Debug, "Debug websocket port is not set; skipping port forwarding removal");
                 }
                 else
                 {
-                    Debug.LogMessage(LogEventLevel.Information, "Port forwarding for port {0} removed", port);
+                    var result = CrestronEthernetHelper.RemovePortForwarding(
+                        (ushort)port, (ushort)port, csIp,
+                        CrestronEthernetHelper.ePortMapTransport.TCP);
+
+                    if (result != CrestronEthernetHelper.PortForwardingUserPatRetCodes.NoErr)
+                    {
+                        Debug.LogMessage(LogEventLevel.Warning, "Error removing port forwarding for debug websocket: {0}", result);
+                    }
+                    else
+                    {
+                        Debug.LogMessage(LogEventLevel.Information, "Port forwarding for port {0} removed", port);
+                    }
                 }
             }
             catch (ArgumentException)
@@ -161,5 +180,55 @@ namespace PepperDash.Essentials.Core.Web.RequestHandlers
             Debug.LogMessage(LogEventLevel.Information, "Websocket Debug Session Stopped");
         }
 
+        private void StartPortForwardTimeout(int port, string csIp)
+        {
+            lock (_timerLock)
+            {
+                _portForwardTimeoutTimer?.Dispose();
+                _portForwardTimeoutTimer = new CTimer(_ =>
+                {
+                    if (Debug.WebsocketSink.HasActiveConnections)
+                    {
+                        Debug.LogMessage(LogEventLevel.Debug, "Debug websocket has active connections; keeping port forward");
+                        return;
+                    }
+
+                    Debug.LogMessage(LogEventLevel.Information, "No debug websocket connection within 30 seconds; removing port forward for port {0}", port);
+
+                    try
+                    {
+                        var result = CrestronEthernetHelper.RemovePortForwarding(
+                            (ushort)port, (ushort)port, csIp,
+                            CrestronEthernetHelper.ePortMapTransport.TCP);
+
+                        if (result != CrestronEthernetHelper.PortForwardingUserPatRetCodes.NoErr)
+                        {
+                            Debug.LogMessage(LogEventLevel.Warning, "Error removing port forwarding on timeout: {0}", result);
+                        }
+                        else
+                        {
+                            Debug.LogMessage(LogEventLevel.Information, "Port forwarding for port {0} removed due to timeout", port);
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        Debug.LogMessage(LogEventLevel.Warning, "Error removing port forwarding on timeout: {0}", ex.Message);
+                    }
+                }, 30000);
+            }
+        }
+
+        /// <summary>
+        /// Cancels the port forward timeout timer if a session is being explicitly stopped.
+        /// </summary>
+        private void CancelPortForwardTimeout()
+        {
+            lock (_timerLock)
+            {
+                _portForwardTimeoutTimer?.Dispose();
+                _portForwardTimeoutTimer = null;
+            }
+        }
+
     }
 }

src/PepperDash.Essentials.MobileControl.Messengers/Messengers/IEssentialsRoomCombinerMessenger.cs

@@ -21,6 +21,8 @@ namespace PepperDash.Essentials.AppServer.Messengers
     {
         private readonly IEssentialsRoomCombiner _roomCombiner;
 
+        private readonly IEssentialsRoomCombinerWithOperationStatus _roomCombinerWithOperationStatus;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="IEssentialsRoomCombinerMessenger"/> class,  which facilitates
         /// messaging for an <see cref="IEssentialsRoomCombiner"/> instance.
@@ -35,6 +37,7 @@ namespace PepperDash.Essentials.AppServer.Messengers
             : base(key, messagePath, roomCombiner as IKeyName)
         {
             _roomCombiner = roomCombiner;
+            _roomCombinerWithOperationStatus = roomCombiner as IEssentialsRoomCombinerWithOperationStatus;
         }
 
         /// <summary>
@@ -98,6 +101,19 @@ namespace PepperDash.Essentials.AppServer.Messengers
                 SendFullStatus();
             };
 
+            if (_roomCombinerWithOperationStatus != null)
+            {
+                _roomCombinerWithOperationStatus.CombinationOperationStatusChanged += (sender, args) =>
+                {
+                    var message = new
+                    {
+                        combinationOperation = _roomCombinerWithOperationStatus.CombinationOperation
+                    };
+
+                    PostStatusMessage(JToken.FromObject(message));
+                };
+            }
+
             _roomCombiner.IsInAutoModeFeedback.OutputChange += (sender, args) =>
             {
                 var message = new
@@ -138,6 +154,7 @@ namespace PepperDash.Essentials.AppServer.Messengers
                     DisableAutoMode = _roomCombiner.DisableAutoMode,
                     IsInAutoMode = _roomCombiner.IsInAutoMode,
                     CurrentScenario = _roomCombiner.CurrentScenario,
+                    CombinationOperation = _roomCombinerWithOperationStatus != null ? _roomCombinerWithOperationStatus.CombinationOperation : null,
                     Rooms = rooms,
                     RoomCombinationScenarios = _roomCombiner.RoomCombinationScenarios,
                     Partitions = _roomCombiner.Partitions
@@ -194,6 +211,12 @@ namespace PepperDash.Essentials.AppServer.Messengers
         [JsonProperty("currentScenario", NullValueHandling = NullValueHandling.Ignore)]
         public IRoomCombinationScenario CurrentScenario { get; set; }
 
+        /// <summary>
+        /// Gets or sets the room combination operation status.
+        /// </summary>
+        [JsonProperty("combinationOperation", NullValueHandling = NullValueHandling.Ignore)]
+        public CombinationOperationStatus CombinationOperation { get; set; }
+
         /// <summary>
         /// Gets or sets the collection of rooms associated with the entity.
         /// </summary>

src/PepperDash.Essentials.MobileControl.Messengers/Messengers/MessengerBase.cs

@@ -264,6 +264,9 @@ namespace PepperDash.Essentials.AppServer.Messengers
 
                 message.Name = _device.Name;
 
+                message.MessageBasePath = MessagePath;
+
+
                 var token = JToken.FromObject(message);
 
                 PostStatusMessage(token, MessagePath, clientId);

src/PepperDash.Essentials.MobileControl/MobileControlConfig.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;
 
@@ -40,9 +41,10 @@ namespace PepperDash.Essentials
         public bool EnableApiServer { get; set; } = true;
 
         /// <summary>
-        /// Enable subscriptions for Messengers
+        /// Enables subscriptions for messengers
         /// </summary>
         [JsonProperty("enableMessengerSubscriptions")]
+        [Obsolete("This property is obsolete and will be removed in a future version. All messengers are now subscription based.")]
         public bool EnableMessengerSubscriptions { get; set; }
     }
 
@@ -288,4 +290,4 @@ namespace PepperDash.Essentials
         /// </summary>
         NEO
     }
-}
+}