[Modify] Add it

websocket-sharp/Server/HttpServer.cs

@@ -44,6 +44,7 @@ using System.IO;
 using System.Net.Sockets;
 using System.Security.Cryptography.X509Certificates;
 using System.Security.Principal;
+using System.Text;
 using System.Threading;
 using WebSocketSharp.Net;
 using WebSocketSharp.Net.WebSockets;
@@ -821,6 +822,20 @@ namespace WebSocketSharp.Server
              : address.ToString ();
     }
 
+    private string createFilePath (string path)
+    {
+      var parent = _rootPath;
+      var child = path.TrimStart ('/', '\\');
+
+      var buff = new StringBuilder (parent, 32);
+      if (parent == "/" || parent == "\\")
+        buff.Append (child);
+      else
+        buff.AppendFormat ("/{0}", child);
+
+      return buff.ToString ().Replace ('\\', '/');
+    }
+
     private static string getHost (Uri uri)
     {
       return uri.HostNameType == UriHostNameType.IPv6 ? uri.Host : uri.DnsSafeHost;