Add some xml doc comments to new classes.

Move your new classes under the WebSocketSharp.Net namespace.
And move ServerSslAuthConfiguration.cs to Net folder.
Stay ToolsVersion="3.5" in websocket-sharp.csproj

websocket-sharp/Net/ClientSslAuthConfiguration.cs

@@ -36,8 +36,12 @@
 using System.Security.Authentication;
 using System.Security.Cryptography.X509Certificates;
 
-namespace WebSocketSharp
+namespace WebSocketSharp.Net
 {
+    /// <summary>
+    /// Stores the parameters used in configuring <see cref="System.Net.Security.SslStream"/>
+    /// as a client.
+    /// </summary>
     public class ClientSslAuthConfiguration
     {
         /// <summary>

websocket-sharp/Net/ServerSslAuthConfiguration.cs

@@ -0,0 +1,117 @@
+#region License
+/*
+ * ServerSslAuthConfiguration.cs
+ *
+ * The MIT License
+ *
+ * Copyright (c) 2014 liryna
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#endregion
+
+#region Authors
+/*
+ * Authors:
+ * - Liryna liryna.stark@gmail.com
+ */
+#endregion
+
+using System.Security.Authentication;
+using System.Security.Cryptography.X509Certificates;
+
+namespace WebSocketSharp.Net
+{
+    /// <summary>
+    /// Stores the parameters used in configuring <see cref="System.Net.Security.SslStream"/>
+    /// as a server.
+    /// </summary>
+    public class ServerSslAuthConfiguration
+    {
+        /// <summary>
+        /// Gets or sets the certificate used to authenticate the server on the secure connection.
+        /// </summary>
+        /// <value>
+        /// A <see cref="X509Certificate2"/> that represents the certificate used to authenticate
+        /// the server.
+        /// </value>
+        public X509Certificate2 ServerCertificate { get; set; }
+
+        /// <summary>
+        /// Gets or sets the client certificate request option.
+        /// </summary>
+        /// <value>
+        /// A Boolean value that specifies whether the client must supply a certificate for authentication.
+        /// </value>
+        public bool ClientCertificateRequired { get; set; }
+
+        /// <summary>
+        /// Gets or sets the Ssl protocols type enabled.
+        /// </summary>
+        /// <value>
+        /// The <see cref="SslProtocols"/> value that represents the protocol used for authentication.
+        /// </value>
+        public SslProtocols EnabledSslProtocols { get; set; }
+
+        /// <summary>
+        /// Gets or sets the verification of certificate revocation option.
+        /// </summary>
+        /// <value>
+        /// A Boolean value that specifies whether the certificate revocation list is checked during authentication.
+        /// </value>
+        public bool CheckCertificateRevocation { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ServerSslAuthConfiguration"/> class.
+        /// </summary>
+        public ServerSslAuthConfiguration(X509Certificate2 serverCertificate)
+            : this(serverCertificate, false, SslProtocols.Default, false)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ServerSslAuthConfiguration"/> class.
+        /// </summary>
+        public ServerSslAuthConfiguration(X509Certificate2 serverCertificate, bool clientCertificateRequired)
+            : this(serverCertificate, clientCertificateRequired, SslProtocols.Default, false)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ServerSslAuthConfiguration"/> class.
+        /// </summary>
+        public ServerSslAuthConfiguration(X509Certificate2 serverCertificate, bool clientCertificateRequired,
+            SslProtocols enabledSslProtocols)
+            : this(serverCertificate, clientCertificateRequired, enabledSslProtocols, false)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ServerSslAuthConfiguration"/> class.
+        /// </summary>
+        public ServerSslAuthConfiguration(X509Certificate2 serverCertificate, bool clientCertificateRequired,
+            SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
+        {
+            this.ServerCertificate = serverCertificate;
+            this.ClientCertificateRequired = clientCertificateRequired;
+            this.EnabledSslProtocols = enabledSslProtocols;
+            this.CheckCertificateRevocation = checkCertificateRevocation;
+        }
+    }
+}