From f8a70130e7bfc8a1fa9992366c19c44c30c47819 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Sun, 30 Sep 2018 17:58:37 +0900
Subject: [PATCH] [Modify] Add it

---
 websocket-sharp/Net/HttpUtility.cs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/websocket-sharp/Net/HttpUtility.cs b/websocket-sharp/Net/HttpUtility.cs
index a54de11a..08abb41e 100644
--- a/websocket-sharp/Net/HttpUtility.cs
+++ b/websocket-sharp/Net/HttpUtility.cs
@@ -155,6 +155,29 @@ namespace WebSocketSharp.Net
       return buff.ToString ();
     }
 
+    private static string htmlEncode (string s)
+    {
+      var buff = new StringBuilder ();
+
+      foreach (var c in s) {
+        buff.Append (
+          c == '"'
+          ? "&quot;"
+          : c == '&'
+            ? "&amp;"
+            : c == '<'
+              ? "&lt;"
+              : c == '>'
+                ? "&gt;"
+                : c > 159
+                  ? String.Format ("&#{0};", (int) c)
+                  : c.ToString ()
+        );
+      }
+
+      return buff.ToString ();
+    }
+
     private static void initEntities ()
     {
       // Build the dictionary of HTML entity references.