From 052978de5e835f12566fb4ee49315eeb0ef46241 Mon Sep 17 00:00:00 2001
From: Filippo Valsorda <filippo@cloudflare.com>
Date: Sat, 10 Dec 2016 00:42:13 +0100
Subject: [PATCH] crypto/tls: expose extension versions in
 ClientHelloInfo.SupportedVersions

---
 handshake_server.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/handshake_server.go b/handshake_server.go
index 652e8a1..c725384 100644
--- a/handshake_server.go
+++ b/handshake_server.go
@@ -901,7 +901,9 @@ func (hs *serverHandshakeState) clientHelloInfo() *ClientHelloInfo {
 	}
 
 	var supportedVersions []uint16
-	if hs.clientHello.vers > VersionTLS12 {
+	if hs.clientHello.supportedVersions != nil {
+		supportedVersions = hs.clientHello.supportedVersions
+	} else if hs.clientHello.vers > VersionTLS12 {
 		supportedVersions = suppVersArray[:]
 	} else if hs.clientHello.vers >= VersionSSL30 {
 		supportedVersions = suppVersArray[VersionTLS12-hs.clientHello.vers:]