From 841ae961fbbe8fe12340723e1c6e897303ebee08 Mon Sep 17 00:00:00 2001
From: Oliver <oliver.salzburg@gmail.com>
Date: Thu, 15 Nov 2018 19:39:47 +0100
Subject: [PATCH] [fix] Replace deprecated Buffer usage

The `Buffer` constructor has been deprecated in favor of safer alternatives.
See https://nodejs.org/en/docs/guides/buffer-constructor-deprecation/
---
 README.md     | 2 +-
 lib/server.js | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 480c4ce8f..332e99c33 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ var server = engine.listen(80);
 
 server.on('connection', function(socket){
   socket.send('utf 8 string');
-  socket.send(new Buffer([0, 1, 2, 3, 4, 5])); // binary data
+  socket.send(Buffer.from([0, 1, 2, 3, 4, 5])); // binary data
 });
 ```
 
diff --git a/lib/server.js b/lib/server.js
index 2ae3447e6..afc808a12 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -359,8 +359,7 @@ Server.prototype.handleUpgrade = function (req, socket, upgradeHead) {
       return;
     }
 
-    var head = new Buffer(upgradeHead.length); // eslint-disable-line node/no-deprecated-api
-    upgradeHead.copy(head);
+    var head = Buffer.from(upgradeHead); // eslint-disable-line node/no-deprecated-api
     upgradeHead = null;
 
     // delegate to ws