From b56a5a1d60715ae115723c11c27ff7e032a3c4a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Wed, 12 Sep 2018 16:16:29 +0200
Subject: Do not send a 101 after a final response in switch_protocol

---
 doc/src/guide/migrating_from_2.4.asciidoc | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'doc/src/guide/migrating_from_2.4.asciidoc')

diff --git a/doc/src/guide/migrating_from_2.4.asciidoc b/doc/src/guide/migrating_from_2.4.asciidoc
index 4ffb5b9..edf7d5b 100644
--- a/doc/src/guide/migrating_from_2.4.asciidoc
+++ b/doc/src/guide/migrating_from_2.4.asciidoc
@@ -81,6 +81,11 @@ also been worked on.
 
 * Improve the validation of HTTP/1.1 absolute-form requests.
 
+* When the `switch_protocol` is used after a response was
+  sent, Cowboy will no longer attempt to send the 101 informational
+  response for the protocol upgrade. This caused a crash of the
+  connection previously.
+
 * Errors that occur when a callback returned by
   `content_types_provided` does not exist have been improved.
 
-- 
cgit v1.2.3

