From 8a1f88114ceaf56b139229e511533bf052c58758 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Thu, 20 Aug 2020 11:35:09 +0900
Subject: [PATCH] Update README

---
 README.rst | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/README.rst b/README.rst
index a2050664..3a3b39d1 100644
--- a/README.rst
+++ b/README.rst
@@ -143,6 +143,17 @@ packet pretty small because it does not send its certificates.
 To send 0-RTT data, after making sure that resumption works, use -d
 option to specify a file which contains data to send.
 
+Token (Not  comes in Retry packet)
+----------------------------------
+
+QUIC server might send a token to client after connection has been
+established.  Client can send this token in subsequent connection to
+the server.  Server verifies the token and if it succeeds, the address
+validation completes and lifts some restrictions on server which might
+speed up transfer.  In order to save and/or load a token,
+use --token-file option of examples/client.  The given file is
+overwritten if it already exists when storing a token.
+
 Crypto helper library
 ---------------------
 
-- 
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