diff --git a/websocket-sharp/Server/WebSocketBehavior.cs b/websocket-sharp/Server/WebSocketBehavior.cs
index 3bdb4e3c3..b742c1883 100644
--- a/websocket-sharp/Server/WebSocketBehavior.cs
+++ b/websocket-sharp/Server/WebSocketBehavior.cs
@@ -348,7 +348,12 @@ private void onOpen (object sender, EventArgs e)
 
     #region Internal Methods
 
-    internal void Start (WebSocketContext context, WebSocketSessionManager sessions)
+        /// <summary>
+        /// Starts a websocket behaviour on a given <see cref="WebSocketContext"/>.
+        /// </summary>
+        /// <param name="context"></param>
+        /// <param name="sessions"></param>
+    public void Start (WebSocketContext context, WebSocketSessionManager sessions)
     {
       if (_websocket != null) {
         _websocket.Log.Error ("A session instance cannot be reused.");
diff --git a/websocket-sharp/Server/WebSocketServer.cs b/websocket-sharp/Server/WebSocketServer.cs
index 7e1d4df57..2e11ce845 100644
--- a/websocket-sharp/Server/WebSocketServer.cs
+++ b/websocket-sharp/Server/WebSocketServer.cs
@@ -1093,7 +1093,6 @@ private static bool tryCreateUri (
     ///   <paramref name="path"/> is already in use.
     ///   </para>
     /// </exception>
-    [Obsolete ("This method will be removed. Use added one instead.")]
     public void AddWebSocketService<TBehavior> (
       string path, Func<TBehavior> creator
     )
diff --git a/websocket-sharp/Server/WebSocketSessionManager.cs b/websocket-sharp/Server/WebSocketSessionManager.cs
index 32d59c85e..c9ce13b7b 100644
--- a/websocket-sharp/Server/WebSocketSessionManager.cs
+++ b/websocket-sharp/Server/WebSocketSessionManager.cs
@@ -62,7 +62,7 @@ public class WebSocketSessionManager
 
     #region Internal Constructors
 
-    internal WebSocketSessionManager (Logger log)
+    public WebSocketSessionManager (Logger log)
     {
       _log = log;
 
@@ -529,7 +529,7 @@ internal bool Remove (string id)
         return _sessions.Remove (id);
     }
 
-    internal void Start ()
+    public void Start ()
     {
       lock (_sync) {
         _sweepTimer.Enabled = _clean;