From c13df5ae678f97e62f93bd49adcdb2f7e678e2de Mon Sep 17 00:00:00 2001
From: Pierre Ossman <ossman@cendio.se>
Date: Fri, 15 Feb 2019 10:23:32 +0100
Subject: [PATCH] Fix version handshake to handle slow data

---
 core/rfb.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/rfb.js b/core/rfb.js
index 39683cbd..49f06380 100644
--- a/core/rfb.js
+++ b/core/rfb.js
@@ -785,8 +785,8 @@ export default class RFB extends EventTargetMixin {
     // Message Handlers
 
     _negotiate_protocol_version() {
-        if (this._sock.rQlen < 12) {
-            return this._fail("Received incomplete protocol version.");
+        if (this._sock.rQwait("version", 12)) {
+            return false;
         }
 
         const sversion = this._sock.rQshiftStr(12).substr(4, 7);