Add all websocket messages to generated openapi spec (#9682)

* Add all websocket messages to generated openapi spec

* Use oneOf

* JsonIgnore ServerId

* Oops

* Add discriminators

* Add WebSocketMessage container for Inbound and Outbound messages

44 files changed, 985 insertions, 0 deletions

diff --git a/MediaBrowser.Controller/Net/WebSocketMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessage.cs
new file mode 100644
index 000000000..c02bcd70b
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessage.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Text.Json.Serialization;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net;
+
+/// <summary>
+/// Websocket message without data.
+/// </summary>
+public abstract class WebSocketMessage
+{
+    /// <summary>
+    /// Gets or sets the type of the message.
+    /// TODO make this abstract and get only.
+    /// </summary>
+    public virtual SessionMessageType MessageType { get; set; }
+
+    /// <summary>
+    /// Gets or sets the message id.
+    /// </summary>
+    public Guid MessageId { get; set; }
+
+    /// <summary>
+    /// Gets or sets the server id.
+    /// </summary>
+    [JsonIgnore]
+    public string? ServerId { get; set; }
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessageOfT.cs b/MediaBrowser.Controller/Net/WebSocketMessageOfT.cs
new file mode 100644
index 000000000..7c35c8010
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessageOfT.cs
@@ -0,0 +1,33 @@
+#pragma warning disable SA1649 // File name must equal class name.
+
+namespace MediaBrowser.Controller.Net;
+
+/// <summary>
+/// Class WebSocketMessage.
+/// </summary>
+/// <typeparam name="T">The type of the data.</typeparam>
+// TODO make this abstract, remove empty ctor.
+public class WebSocketMessage<T> : WebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="WebSocketMessage{T}"/> class.
+    /// </summary>
+    public WebSocketMessage()
+    {
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="WebSocketMessage{T}"/> class.
+    /// </summary>
+    /// <param name="data">The data to send.</param>
+    protected WebSocketMessage(T data)
+    {
+        Data = data;
+    }
+
+    /// <summary>
+    /// Gets or sets the data.
+    /// </summary>
+    // TODO make this set only.
+    public T? Data { get; set; }
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/IInboundWebSocketMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/IInboundWebSocketMessage.cs
new file mode 100644
index 000000000..c3cf9955a
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/IInboundWebSocketMessage.cs
@@ -0,0 +1,10 @@
+#pragma warning disable CA1040
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages;
+
+/// <summary>
+/// Interface representing that the websocket message is inbound.
+/// </summary>
+public interface IInboundWebSocketMessage
+{
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/IOutboundWebSocketMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/IOutboundWebSocketMessage.cs
new file mode 100644
index 000000000..c74a254a6
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/IOutboundWebSocketMessage.cs
@@ -0,0 +1,10 @@
+#pragma warning disable CA1040
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages;
+
+/// <summary>
+/// Interface representing that the websocket message is outbound.
+/// </summary>
+public interface IOutboundWebSocketMessage
+{
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ActivityLogEntryStartMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ActivityLogEntryStartMessage.cs
new file mode 100644
index 000000000..b9f71b922
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ActivityLogEntryStartMessage.cs
@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using MediaBrowser.Model.Activity;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Inbound;
+
+/// <summary>
+/// Activity log entry start message.
+/// </summary>
+public class ActivityLogEntryStartMessage : WebSocketMessage<IReadOnlyCollection<ActivityLogEntry>>, IInboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ActivityLogEntryStartMessage"/> class.
+    /// </summary>
+    /// <param name="data">Collection of activity log entries.</param>
+    public ActivityLogEntryStartMessage(IReadOnlyCollection<ActivityLogEntry> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ActivityLogEntryStart)]
+    public override SessionMessageType MessageType => SessionMessageType.ActivityLogEntryStart;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ActivityLogEntryStopMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ActivityLogEntryStopMessage.cs
new file mode 100644
index 000000000..eac129b20
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ActivityLogEntryStopMessage.cs
@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using MediaBrowser.Model.Activity;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Inbound;
+
+/// <summary>
+/// Activity log entry stop message.
+/// </summary>
+public class ActivityLogEntryStopMessage : WebSocketMessage<IReadOnlyCollection<ActivityLogEntry>>, IInboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ActivityLogEntryStopMessage"/> class.
+    /// </summary>
+    /// <param name="data">Collection of activity log entries.</param>
+    public ActivityLogEntryStopMessage(IReadOnlyCollection<ActivityLogEntry> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ActivityLogEntryStop)]
+    public override SessionMessageType MessageType => SessionMessageType.ActivityLogEntryStop;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ScheduledTasksInfoStartMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ScheduledTasksInfoStartMessage.cs
new file mode 100644
index 000000000..dd2a7145e
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ScheduledTasksInfoStartMessage.cs
@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.Tasks;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Inbound;
+
+/// <summary>
+/// Scheduled tasks info start message.
+/// </summary>
+public class ScheduledTasksInfoStartMessage : WebSocketMessage<IReadOnlyCollection<TaskInfo>>, IInboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ScheduledTasksInfoStartMessage"/> class.
+    /// </summary>
+    /// <param name="data">Collection of task info.</param>
+    public ScheduledTasksInfoStartMessage(IReadOnlyCollection<TaskInfo> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ScheduledTasksInfoStart)]
+    public override SessionMessageType MessageType => SessionMessageType.ScheduledTasksInfoStart;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ScheduledTasksInfoStopMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ScheduledTasksInfoStopMessage.cs
new file mode 100644
index 000000000..84e1f0166
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/ScheduledTasksInfoStopMessage.cs
@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.Tasks;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Inbound;
+
+/// <summary>
+/// Scheduled tasks info stop message.
+/// </summary>
+public class ScheduledTasksInfoStopMessage : WebSocketMessage<IReadOnlyCollection<TaskInfo>>, IInboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ScheduledTasksInfoStopMessage"/> class.
+    /// </summary>
+    /// <param name="data">Collection of task info.</param>
+    public ScheduledTasksInfoStopMessage(IReadOnlyCollection<TaskInfo> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ScheduledTasksInfoStop)]
+    public override SessionMessageType MessageType => SessionMessageType.ScheduledTasksInfoStop;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/SessionsStartMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/SessionsStartMessage.cs
new file mode 100644
index 000000000..e35a5dc3a
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/SessionsStartMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Controller.Session;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Inbound;
+
+/// <summary>
+/// Sessions start message.
+/// </summary>
+public class SessionsStartMessage : WebSocketMessage<SessionInfo>, IInboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SessionsStartMessage"/> class.
+    /// </summary>
+    /// <param name="data">Session info.</param>
+    public SessionsStartMessage(SessionInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SessionsStart)]
+    public override SessionMessageType MessageType => SessionMessageType.SessionsStart;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/SessionsStopMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/SessionsStopMessage.cs
new file mode 100644
index 000000000..7e3582d64
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Inbound/SessionsStopMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Controller.Session;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Inbound;
+
+/// <summary>
+/// Sessions stop message.
+/// </summary>
+public class SessionsStopMessage : WebSocketMessage<SessionInfo>, IInboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SessionsStopMessage"/> class.
+    /// </summary>
+    /// <param name="data">Session info.</param>
+    public SessionsStopMessage(SessionInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SessionsStop)]
+    public override SessionMessageType MessageType => SessionMessageType.SessionsStop;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/InboundWebSocketMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/InboundWebSocketMessage.cs
new file mode 100644
index 000000000..20ca888e1
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/InboundWebSocketMessage.cs
@@ -0,0 +1,9 @@
+namespace MediaBrowser.Controller.Net.WebSocketMessages;
+
+/// <summary>
+/// Class representing the list of outbound websocket message types.
+/// Only used in openapi generation.
+/// </summary>
+public class InboundWebSocketMessage : WebSocketMessage
+{
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ActivityLogEntryMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ActivityLogEntryMessage.cs
new file mode 100644
index 000000000..5650ee4bb
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ActivityLogEntryMessage.cs
@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using MediaBrowser.Model.Activity;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Activity log created message.
+/// </summary>
+public class ActivityLogEntryMessage : WebSocketMessage<IReadOnlyList<ActivityLogEntry>>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ActivityLogEntryMessage"/> class.
+    /// </summary>
+    /// <param name="data">List of activity log entries.</param>
+    public ActivityLogEntryMessage(IReadOnlyList<ActivityLogEntry> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ActivityLogEntry)]
+    public override SessionMessageType MessageType => SessionMessageType.ActivityLogEntry;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ForceKeepAliveMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ForceKeepAliveMessage.cs
new file mode 100644
index 000000000..94ade5e81
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ForceKeepAliveMessage.cs
@@ -0,0 +1,23 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Force keep alive websocket messages.
+/// </summary>
+public class ForceKeepAliveMessage : WebSocketMessage<int>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ForceKeepAliveMessage"/> class.
+    /// </summary>
+    /// <param name="data">The timeout in seconds.</param>
+    public ForceKeepAliveMessage(int data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ForceKeepAlive)]
+    public override SessionMessageType MessageType => SessionMessageType.ForceKeepAlive;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/GeneralCommandMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/GeneralCommandMessage.cs
new file mode 100644
index 000000000..6c71e73f9
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/GeneralCommandMessage.cs
@@ -0,0 +1,23 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// General command websocket message.
+/// </summary>
+public class GeneralCommandMessage : WebSocketMessage<GeneralCommand>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="GeneralCommandMessage"/> class.
+    /// </summary>
+    /// <param name="data">The general command.</param>
+    public GeneralCommandMessage(GeneralCommand data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.GeneralCommand)]
+    public override SessionMessageType MessageType => SessionMessageType.GeneralCommand;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/LibraryChangedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/LibraryChangedMessage.cs
new file mode 100644
index 000000000..6432ae8ef
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/LibraryChangedMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Library changed message.
+/// </summary>
+public class LibraryChangedMessage : WebSocketMessage<LibraryUpdateInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="LibraryChangedMessage"/> class.
+    /// </summary>
+    /// <param name="data">The library update info.</param>
+    public LibraryChangedMessage(LibraryUpdateInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.LibraryChanged)]
+    public override SessionMessageType MessageType => SessionMessageType.LibraryChanged;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PlayMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PlayMessage.cs
new file mode 100644
index 000000000..7f943bda1
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PlayMessage.cs
@@ -0,0 +1,23 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Play command websocket message.
+/// </summary>
+public class PlayMessage : WebSocketMessage<PlayRequest>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PlayMessage"/> class.
+    /// </summary>
+    /// <param name="data">The play request.</param>
+    public PlayMessage(PlayRequest data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.Play)]
+    public override SessionMessageType MessageType => SessionMessageType.Play;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PlaystateMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PlaystateMessage.cs
new file mode 100644
index 000000000..804ccb37d
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PlaystateMessage.cs
@@ -0,0 +1,23 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Playstate message.
+/// </summary>
+public class PlaystateMessage : WebSocketMessage<PlaystateRequest>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PlaystateMessage"/> class.
+    /// </summary>
+    /// <param name="data">Playstate request data.</param>
+    public PlaystateMessage(PlaystateRequest data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.Playstate)]
+    public override SessionMessageType MessageType => SessionMessageType.Playstate;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationCancelledMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationCancelledMessage.cs
new file mode 100644
index 000000000..3d7dc5c93
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationCancelledMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.Updates;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Plugin installation cancelled message.
+/// </summary>
+public class PluginInstallationCancelledMessage : WebSocketMessage<InstallationInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PluginInstallationCancelledMessage"/> class.
+    /// </summary>
+    /// <param name="data">Installation info.</param>
+    public PluginInstallationCancelledMessage(InstallationInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.PackageInstallationCancelled)]
+    public override SessionMessageType MessageType => SessionMessageType.PackageInstallationCancelled;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationCompletedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationCompletedMessage.cs
new file mode 100644
index 000000000..81268007f
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationCompletedMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.Updates;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Plugin installation completed message.
+/// </summary>
+public class PluginInstallationCompletedMessage : WebSocketMessage<InstallationInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PluginInstallationCompletedMessage"/> class.
+    /// </summary>
+    /// <param name="data">Installation info.</param>
+    public PluginInstallationCompletedMessage(InstallationInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.PackageInstallationCompleted)]
+    public override SessionMessageType MessageType => SessionMessageType.PackageInstallationCompleted;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationFailedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationFailedMessage.cs
new file mode 100644
index 000000000..9177f1293
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallationFailedMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.Updates;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Plugin installation failed message.
+/// </summary>
+public class PluginInstallationFailedMessage : WebSocketMessage<InstallationInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PluginInstallationFailedMessage"/> class.
+    /// </summary>
+    /// <param name="data">Installation info.</param>
+    public PluginInstallationFailedMessage(InstallationInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.PackageInstallationFailed)]
+    public override SessionMessageType MessageType => SessionMessageType.PackageInstallationFailed;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallingMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallingMessage.cs
new file mode 100644
index 000000000..e371440a0
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginInstallingMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.Updates;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Package installing message.
+/// </summary>
+public class PluginInstallingMessage : WebSocketMessage<InstallationInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PluginInstallingMessage"/> class.
+    /// </summary>
+    /// <param name="data">Installation info.</param>
+    public PluginInstallingMessage(InstallationInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.PackageInstalling)]
+    public override SessionMessageType MessageType => SessionMessageType.PackageInstalling;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginUninstalledMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginUninstalledMessage.cs
new file mode 100644
index 000000000..b2994fc95
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/PluginUninstalledMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Plugins;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Plugin uninstalled message.
+/// </summary>
+public class PluginUninstalledMessage : WebSocketMessage<PluginInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="PluginUninstalledMessage"/> class.
+    /// </summary>
+    /// <param name="data">Plugin info.</param>
+    public PluginUninstalledMessage(PluginInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.PackageUninstalled)]
+    public override SessionMessageType MessageType => SessionMessageType.PackageUninstalled;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/RefreshProgressMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/RefreshProgressMessage.cs
new file mode 100644
index 000000000..42dbc3029
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/RefreshProgressMessage.cs
@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Refresh progress message.
+/// </summary>
+public class RefreshProgressMessage : WebSocketMessage<Dictionary<string, string>>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="RefreshProgressMessage"/> class.
+    /// </summary>
+    /// <param name="data">Refresh progress data.</param>
+    public RefreshProgressMessage(Dictionary<string, string> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.RefreshProgress)]
+    public override SessionMessageType MessageType => SessionMessageType.RefreshProgress;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/RestartRequiredMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/RestartRequiredMessage.cs
new file mode 100644
index 000000000..3f3d9e4c8
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/RestartRequiredMessage.cs
@@ -0,0 +1,14 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Restart required.
+/// </summary>
+public class RestartRequiredMessage : WebSocketMessage, IOutboundWebSocketMessage
+{
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.RestartRequired)]
+    public override SessionMessageType MessageType => SessionMessageType.RestartRequired;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ScheduledTaskEndedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ScheduledTaskEndedMessage.cs
new file mode 100644
index 000000000..d69662b00
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ScheduledTaskEndedMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.Tasks;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Scheduled task ended message.
+/// </summary>
+public class ScheduledTaskEndedMessage : WebSocketMessage<TaskResult>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ScheduledTaskEndedMessage"/> class.
+    /// </summary>
+    /// <param name="data">Task result.</param>
+    public ScheduledTaskEndedMessage(TaskResult data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ScheduledTaskEnded)]
+    public override SessionMessageType MessageType => SessionMessageType.ScheduledTaskEnded;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ScheduledTasksInfoMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ScheduledTasksInfoMessage.cs
new file mode 100644
index 000000000..41a05b0de
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ScheduledTasksInfoMessage.cs
@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.Tasks;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Scheduled tasks info message.
+/// </summary>
+public class ScheduledTasksInfoMessage : WebSocketMessage<IReadOnlyList<TaskInfo>>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ScheduledTasksInfoMessage"/> class.
+    /// </summary>
+    /// <param name="data">List of task infos.</param>
+    public ScheduledTasksInfoMessage(IReadOnlyList<TaskInfo> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ScheduledTasksInfo)]
+    public override SessionMessageType MessageType => SessionMessageType.ScheduledTasksInfo;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SeriesTimerCancelledMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SeriesTimerCancelledMessage.cs
new file mode 100644
index 000000000..d4950b8b6
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SeriesTimerCancelledMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Controller.LiveTv;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Series timer cancelled message.
+/// </summary>
+public class SeriesTimerCancelledMessage : WebSocketMessage<TimerEventInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SeriesTimerCancelledMessage"/> class.
+    /// </summary>
+    /// <param name="data">The timer event info.</param>
+    public SeriesTimerCancelledMessage(TimerEventInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SeriesTimerCancelled)]
+    public override SessionMessageType MessageType => SessionMessageType.SeriesTimerCancelled;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SeriesTimerCreatedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SeriesTimerCreatedMessage.cs
new file mode 100644
index 000000000..091c10be6
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SeriesTimerCreatedMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Controller.LiveTv;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Series timer created message.
+/// </summary>
+public class SeriesTimerCreatedMessage : WebSocketMessage<TimerEventInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SeriesTimerCreatedMessage"/> class.
+    /// </summary>
+    /// <param name="data">timer event info.</param>
+    public SeriesTimerCreatedMessage(TimerEventInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SeriesTimerCreated)]
+    public override SessionMessageType MessageType => SessionMessageType.SeriesTimerCreated;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ServerRestartingMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ServerRestartingMessage.cs
new file mode 100644
index 000000000..a465d8b00
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ServerRestartingMessage.cs
@@ -0,0 +1,14 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Server restarting down message.
+/// </summary>
+public class ServerRestartingMessage : WebSocketMessage, IOutboundWebSocketMessage
+{
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ServerRestarting)]
+    public override SessionMessageType MessageType => SessionMessageType.ServerRestarting;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ServerShuttingDownMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ServerShuttingDownMessage.cs
new file mode 100644
index 000000000..0b998a523
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/ServerShuttingDownMessage.cs
@@ -0,0 +1,14 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Server shutting down message.
+/// </summary>
+public class ServerShuttingDownMessage : WebSocketMessage, IOutboundWebSocketMessage
+{
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.ServerShuttingDown)]
+    public override SessionMessageType MessageType => SessionMessageType.ServerShuttingDown;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SessionsMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SessionsMessage.cs
new file mode 100644
index 000000000..4c91e0bca
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SessionsMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Controller.Session;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Sessions message.
+/// </summary>
+public class SessionsMessage : WebSocketMessage<SessionInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SessionsMessage"/> class.
+    /// </summary>
+    /// <param name="data">Session info.</param>
+    public SessionsMessage(SessionInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.Sessions)]
+    public override SessionMessageType MessageType => SessionMessageType.Sessions;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayCommandMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayCommandMessage.cs
new file mode 100644
index 000000000..17a0fc66e
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayCommandMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.SyncPlay;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Sync play command.
+/// </summary>
+public class SyncPlayCommandMessage : WebSocketMessage<SendCommand>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SyncPlayCommandMessage"/> class.
+    /// </summary>
+    /// <param name="data">The send command.</param>
+    public SyncPlayCommandMessage(SendCommand data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SyncPlayCommand)]
+    public override SessionMessageType MessageType => SessionMessageType.SyncPlayCommand;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandMessage.cs
new file mode 100644
index 000000000..d145d0e01
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.SyncPlay;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Untyped sync play command.
+/// </summary>
+public class SyncPlayGroupUpdateCommandMessage : WebSocketMessage<GroupUpdate>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SyncPlayGroupUpdateCommandMessage"/> class.
+    /// </summary>
+    /// <param name="data">The send command.</param>
+    public SyncPlayGroupUpdateCommandMessage(GroupUpdate data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SyncPlayGroupUpdate)]
+    public override SessionMessageType MessageType => SessionMessageType.SyncPlayGroupUpdate;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfGroupInfoMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfGroupInfoMessage.cs
new file mode 100644
index 000000000..668392c66
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfGroupInfoMessage.cs
@@ -0,0 +1,25 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.SyncPlay;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Sync play group update command with group info.
+/// GroupUpdateTypes: GroupJoined.
+/// </summary>
+public class SyncPlayGroupUpdateCommandOfGroupInfoMessage : WebSocketMessage<GroupUpdate<GroupInfoDto>>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SyncPlayGroupUpdateCommandOfGroupInfoMessage"/> class.
+    /// </summary>
+    /// <param name="data">The group info.</param>
+    public SyncPlayGroupUpdateCommandOfGroupInfoMessage(GroupUpdate<GroupInfoDto> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SyncPlayGroupUpdate)]
+    public override SessionMessageType MessageType => SessionMessageType.SyncPlayGroupUpdate;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfGroupStateUpdateMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfGroupStateUpdateMessage.cs
new file mode 100644
index 000000000..ec8c3344f
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfGroupStateUpdateMessage.cs
@@ -0,0 +1,25 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.SyncPlay;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Sync play group update command with group state update.
+/// GroupUpdateTypes: StateUpdate.
+/// </summary>
+public class SyncPlayGroupUpdateCommandOfGroupStateUpdateMessage : WebSocketMessage<GroupUpdate<GroupStateUpdate>>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SyncPlayGroupUpdateCommandOfGroupStateUpdateMessage"/> class.
+    /// </summary>
+    /// <param name="data">The group info.</param>
+    public SyncPlayGroupUpdateCommandOfGroupStateUpdateMessage(GroupUpdate<GroupStateUpdate> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SyncPlayGroupUpdate)]
+    public override SessionMessageType MessageType => SessionMessageType.SyncPlayGroupUpdate;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfPlayQueueUpdateMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfPlayQueueUpdateMessage.cs
new file mode 100644
index 000000000..465363f14
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfPlayQueueUpdateMessage.cs
@@ -0,0 +1,25 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.SyncPlay;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Sync play group update command with play queue update.
+/// GroupUpdateTypes: PlayQueue.
+/// </summary>
+public class SyncPlayGroupUpdateCommandOfPlayQueueUpdateMessage : WebSocketMessage<GroupUpdate<PlayQueueUpdate>>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SyncPlayGroupUpdateCommandOfPlayQueueUpdateMessage"/> class.
+    /// </summary>
+    /// <param name="data">The play queue update.</param>
+    public SyncPlayGroupUpdateCommandOfPlayQueueUpdateMessage(GroupUpdate<PlayQueueUpdate> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SyncPlayGroupUpdate)]
+    public override SessionMessageType MessageType => SessionMessageType.SyncPlayGroupUpdate;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfStringMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfStringMessage.cs
new file mode 100644
index 000000000..b87e9bf71
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/SyncPlayGroupUpdateCommandOfStringMessage.cs
@@ -0,0 +1,25 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.SyncPlay;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Sync play group update command with string.
+/// GroupUpdateTypes: GroupDoesNotExist (error), LibraryAccessDenied (error), NotInGroup (error), GroupLeft (groupId), UserJoined (username), UserLeft (username).
+/// </summary>
+public class SyncPlayGroupUpdateCommandOfStringMessage : WebSocketMessage<GroupUpdate<string>>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="SyncPlayGroupUpdateCommandOfStringMessage"/> class.
+    /// </summary>
+    /// <param name="data">The send command.</param>
+    public SyncPlayGroupUpdateCommandOfStringMessage(GroupUpdate<string> data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.SyncPlayGroupUpdate)]
+    public override SessionMessageType MessageType => SessionMessageType.SyncPlayGroupUpdate;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/TimerCancelledMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/TimerCancelledMessage.cs
new file mode 100644
index 000000000..0e70549ef
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/TimerCancelledMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Controller.LiveTv;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Timer cancelled message.
+/// </summary>
+public class TimerCancelledMessage : WebSocketMessage<TimerEventInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TimerCancelledMessage"/> class.
+    /// </summary>
+    /// <param name="data">Timer event info.</param>
+    public TimerCancelledMessage(TimerEventInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.TimerCancelled)]
+    public override SessionMessageType MessageType => SessionMessageType.TimerCancelled;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/TimerCreatedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/TimerCreatedMessage.cs
new file mode 100644
index 000000000..295b3081c
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/TimerCreatedMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Controller.LiveTv;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// Timer created message.
+/// </summary>
+public class TimerCreatedMessage : WebSocketMessage<TimerEventInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TimerCreatedMessage"/> class.
+    /// </summary>
+    /// <param name="data">Timer event info.</param>
+    public TimerCreatedMessage(TimerEventInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.TimerCreated)]
+    public override SessionMessageType MessageType => SessionMessageType.TimerCreated;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserDataChangedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserDataChangedMessage.cs
new file mode 100644
index 000000000..b60769540
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserDataChangedMessage.cs
@@ -0,0 +1,23 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// User data changed message.
+/// </summary>
+public class UserDataChangedMessage : WebSocketMessage<UserDataChangeInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="UserDataChangedMessage"/> class.
+    /// </summary>
+    /// <param name="data">The data change info.</param>
+    public UserDataChangedMessage(UserDataChangeInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.UserDataChanged)]
+    public override SessionMessageType MessageType => SessionMessageType.UserDataChanged;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserDeletedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserDeletedMessage.cs
new file mode 100644
index 000000000..6d527be7f
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserDeletedMessage.cs
@@ -0,0 +1,24 @@
+using System;
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// User deleted message.
+/// </summary>
+public class UserDeletedMessage : WebSocketMessage<Guid>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="UserDeletedMessage"/> class.
+    /// </summary>
+    /// <param name="data">The user id.</param>
+    public UserDeletedMessage(Guid data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.UserDeleted)]
+    public override SessionMessageType MessageType => SessionMessageType.UserDeleted;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserUpdatedMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserUpdatedMessage.cs
new file mode 100644
index 000000000..99e9a1f91
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserUpdatedMessage.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Dto;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// User updated message.
+/// </summary>
+public class UserUpdatedMessage : WebSocketMessage<UserDto>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="UserUpdatedMessage"/> class.
+    /// </summary>
+    /// <param name="data">The user dto.</param>
+    public UserUpdatedMessage(UserDto data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.UserUpdated)]
+    public override SessionMessageType MessageType => SessionMessageType.UserUpdated;
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/OutboundWebSocketMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/OutboundWebSocketMessage.cs
new file mode 100644
index 000000000..dba3c8392
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/OutboundWebSocketMessage.cs
@@ -0,0 +1,9 @@
+namespace MediaBrowser.Controller.Net.WebSocketMessages;
+
+/// <summary>
+/// Class representing the list of outbound websocket message types.
+/// Only used in openapi generation.
+/// </summary>
+public class OutboundWebSocketMessage : WebSocketMessage
+{
+}
diff --git a/MediaBrowser.Controller/Net/WebSocketMessages/Shared/KeepAliveMessage.cs b/MediaBrowser.Controller/Net/WebSocketMessages/Shared/KeepAliveMessage.cs
new file mode 100644
index 000000000..7f636212c
--- /dev/null
+++ b/MediaBrowser.Controller/Net/WebSocketMessages/Shared/KeepAliveMessage.cs
@@ -0,0 +1,23 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Shared;
+
+/// <summary>
+/// Keep alive websocket messages.
+/// </summary>
+public class KeepAliveMessage : WebSocketMessage<int>, IInboundWebSocketMessage, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="KeepAliveMessage"/> class.
+    /// </summary>
+    /// <param name="data">The seconds to keep alive for.</param>
+    public KeepAliveMessage(int data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.KeepAlive)]
+    public override SessionMessageType MessageType => SessionMessageType.KeepAlive;
+}