Fix code issues

MediaBrowser.Controller/Syncplay/GroupInfo.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Session;
@@ -9,6 +8,9 @@ namespace MediaBrowser.Controller.Syncplay
     /// <summary>
     /// Class GroupInfo.
     /// </summary>
+    /// <remarks>
+    /// Class is not thread-safe, external locking is required when accessing methods.
+    /// </remarks>
     public class GroupInfo
     {
         /// <summary>
@@ -49,8 +51,8 @@ namespace MediaBrowser.Controller.Syncplay
         /// Gets the participants.
         /// </summary>
         /// <value>The participants, or members of the group.</value>
-        public readonly ConcurrentDictionary<string, GroupMember> Participants =
-            new ConcurrentDictionary<string, GroupMember>(StringComparer.OrdinalIgnoreCase);
+        public readonly Dictionary<string, GroupMember> Participants =
+            new Dictionary<string, GroupMember>(StringComparer.OrdinalIgnoreCase);
 
         /// <summary>
         /// Checks if a session is in this group.

MediaBrowser.Controller/Syncplay/ISyncplayController.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Threading;
 using MediaBrowser.Controller.Session;
 using MediaBrowser.Model.Syncplay;
 
@@ -31,27 +32,31 @@ namespace MediaBrowser.Controller.Syncplay
         /// Initializes the group with the session's info.
         /// </summary>
         /// <param name="session">The session.</param>
-        void InitGroup(SessionInfo session);
+        /// <param name="cancellationToken">The cancellation token.</param>
+        void InitGroup(SessionInfo session, CancellationToken cancellationToken);
 
         /// <summary>
         /// Adds the session to the group.
         /// </summary>
         /// <param name="session">The session.</param>
         /// <param name="request">The request.</param>
-        void SessionJoin(SessionInfo session, JoinGroupRequest request);
+        /// <param name="cancellationToken">The cancellation token.</param>
+        void SessionJoin(SessionInfo session, JoinGroupRequest request, CancellationToken cancellationToken);
 
         /// <summary>
         /// Removes the session from the group.
         /// </summary>
         /// <param name="session">The session.</param>
-        void SessionLeave(SessionInfo session);
+        /// <param name="cancellationToken">The cancellation token.</param>
+        void SessionLeave(SessionInfo session, CancellationToken cancellationToken);
 
         /// <summary>
         /// Handles the requested action by the session.
         /// </summary>
         /// <param name="session">The session.</param>
         /// <param name="request">The requested action.</param>
-        void HandleRequest(SessionInfo session, PlaybackRequest request);
+        /// <param name="cancellationToken">The cancellation token.</param>
+        void HandleRequest(SessionInfo session, PlaybackRequest request, CancellationToken cancellationToken);
 
         /// <summary>
         /// Gets the info about the group for the clients.

MediaBrowser.Controller/Syncplay/ISyncplayManager.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Threading;
 using MediaBrowser.Controller.Session;
 using MediaBrowser.Model.Syncplay;
 
@@ -14,7 +15,8 @@ namespace MediaBrowser.Controller.Syncplay
         /// Creates a new group.
         /// </summary>
         /// <param name="session">The session that's creating the group.</param>
-        void NewGroup(SessionInfo session);
+        /// <param name="cancellationToken">The cancellation token.</param>
+        void NewGroup(SessionInfo session, CancellationToken cancellationToken);
 
         /// <summary>
         /// Adds the session to a group.
@@ -22,27 +24,31 @@ namespace MediaBrowser.Controller.Syncplay
         /// <param name="session">The session.</param>
         /// <param name="groupId">The group id.</param>
         /// <param name="request">The request.</param>
-        void JoinGroup(SessionInfo session, string groupId, JoinGroupRequest request);
+        /// <param name="cancellationToken">The cancellation token.</param>
+        void JoinGroup(SessionInfo session, string groupId, JoinGroupRequest request, CancellationToken cancellationToken);
 
         /// <summary>
         /// Removes the session from a group.
         /// </summary>
         /// <param name="session">The session.</param>
-        void LeaveGroup(SessionInfo session);
+        /// <param name="cancellationToken">The cancellation token.</param>
+        void LeaveGroup(SessionInfo session, CancellationToken cancellationToken);
 
         /// <summary>
         /// Gets list of available groups for a session.
         /// </summary>
         /// <param name="session">The session.</param>
+        /// <param name="filterItemId">The item id to filter by.</param>
         /// <value>The list of available groups.</value>
-        List<GroupInfoView> ListGroups(SessionInfo session);
+        List<GroupInfoView> ListGroups(SessionInfo session, Guid filterItemId);
 
         /// <summary>
         /// Handle a request by a session in a group.
         /// </summary>
         /// <param name="session">The session.</param>
         /// <param name="request">The request.</param>
-        void HandleRequest(SessionInfo session, PlaybackRequest request);
+        /// <param name="cancellationToken">The cancellation token.</param>
+        void HandleRequest(SessionInfo session, PlaybackRequest request, CancellationToken cancellationToken);
 
         /// <summary>
         /// Maps a session to a group.