[minor] Use crypto.randomFillSync() to generate the masking key

websockets · Apr 26, 2019 · 1b85466 · 1b85466
1 parent 993b0cd
commit 1b85466
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/lib/sender.js b/lib/sender.js
@@ -1,12 +1,14 @@
 'use strict';
 
-const { randomBytes } = require('crypto');
+const { randomFillSync } = require('crypto');
 
 const PerMessageDeflate = require('./permessage-deflate');
 const { EMPTY_BUFFER } = require('./constants');
 const { isValidStatusCode } = require('./validation');
 const { mask: applyMask, toBuffer } = require('./buffer-util');
 
+const mask = Buffer.alloc(4);
+
 /**
  * HyBi Sender implementation.
  */
@@ -71,7 +73,7 @@ class Sender {
 
     if (!options.mask) return [target, data];
 
-    const mask = randomBytes(4);
+    randomFillSync(mask, 0, 4);
 
     target[1] |= 0x80;
     target[offset - 4] = mask[0];