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Jellyfin.Api/WebSocketListeners/ActivityLogWebSocketListener.cs

@@ -58,7 +58,11 @@ public class ActivityLogWebSocketListener : BasePeriodicWebSocketListener<Activi
         base.Dispose(dispose);
     }
 
-    private new void Start(WebSocketMessageInfo message)
+    /// <summary>
+    /// Starts sending messages over an activity log web socket.
+    /// </summary>
+    /// <param name="message">The message.</param>
+    protected override void Start(WebSocketMessageInfo message)
     {
         if (!message.Connection.AuthorizationInfo.User.HasPermission(PermissionKind.IsAdministrator))
         {

Jellyfin.Api/WebSocketListeners/SessionInfoWebSocketListener.cs

@@ -68,7 +68,11 @@ public class SessionInfoWebSocketListener : BasePeriodicWebSocketListener<IEnume
         base.Dispose(dispose);
     }
 
-    private new void Start(WebSocketMessageInfo message)
+    /// <summary>
+    /// Starts sending messages over a session info web socket.
+    /// </summary>
+    /// <param name="message">The message.</param>
+    protected override void Start(WebSocketMessageInfo message)
     {
         if (!message.Connection.AuthorizationInfo.User.HasPermission(PermissionKind.IsAdministrator))
         {

MediaBrowser.Controller/Net/BasePeriodicWebSocketListener.cs

@@ -96,7 +96,7 @@ namespace MediaBrowser.Controller.Net
         /// Starts sending messages over a web socket.
         /// </summary>
         /// <param name="message">The message.</param>
-        protected void Start(WebSocketMessageInfo message)
+        protected virtual void Start(WebSocketMessageInfo message)
         {
             var vals = message.Data.Split(',');