diff --git a/websocket-sharp/Net/EndPointListener.cs b/websocket-sharp/Net/EndPointListener.cs
index ebc8d73d..da7fa62e 100644
--- a/websocket-sharp/Net/EndPointListener.cs
+++ b/websocket-sharp/Net/EndPointListener.cs
@@ -369,6 +369,35 @@ namespace WebSocketSharp.Net
       return bestMatch;
     }
 
+    private static HttpListener searchHttpListenerFromSpecial (
+      string path, List<HttpListenerPrefix> prefixes, out HttpListenerPrefix prefix
+    )
+    {
+      prefix = null;
+
+      if (prefixes == null)
+        return null;
+
+      HttpListener bestMatch = null;
+
+      var bestLen = -1;
+      foreach (var pref in prefixes) {
+        var prefPath = pref.Path;
+
+        var len = prefPath.Length;
+        if (len < bestLen)
+          continue;
+
+        if (path.StartsWith (prefPath)) {
+          bestLen = len;
+          bestMatch = pref.Listener;
+          prefix = pref;
+        }
+      }
+
+      return bestMatch;
+    }
+
     #endregion
 
     #region Internal Methods