From bc69e3cb267577e6cf677600c922570d40a8daba Mon Sep 17 00:00:00 2001
From: Luke Valenta <lvalenta@cloudflare.com>
Date: Tue, 10 Nov 2020 15:11:26 -0600
Subject: [PATCH] Use correct TLS extension for ECH

---
 layers/tls_handshake.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/layers/tls_handshake.go b/layers/tls_handshake.go
index 3fefacfc8..4094a7eb8 100644
--- a/layers/tls_handshake.go
+++ b/layers/tls_handshake.go
@@ -21,8 +21,9 @@ const (
 
 // TLS extension numbers
 const (
-	extensionServerName           uint16 = 0
-	extensionEncryptedClientHello uint16 = 0xff02
+	extensionServerName uint16 = 0
+	// https://tlswg.org/draft-ietf-tls-esni/draft-ietf-tls-esni.html
+	extensionEncryptedClientHello uint16 = 0xfe08
 )
 
 // TLSHandshakeRecord defines the structure of a Handshare Record