From 304e3efbf84bcee9e2f28480da85635800949cbe Mon Sep 17 00:00:00 2001
From: Alexandre Snarskii <snar@snar.spb.ru>
Date: Wed, 2 Nov 2016 20:16:56 +0300
Subject: make set_env working with maps.

---
 src/cowboy.erl | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/cowboy.erl b/src/cowboy.erl
index 56aef34..e4705b6 100644
--- a/src/cowboy.erl
+++ b/src/cowboy.erl
@@ -72,7 +72,6 @@ stop_listener(Ref) ->
 -spec set_env(ranch:ref(), atom(), any()) -> ok.
 set_env(Ref, Name, Value) ->
 	Opts = ranch:get_protocol_options(Ref),
-	{_, Env} = lists:keyfind(env, 1, Opts),
-	Opts2 = lists:keyreplace(env, 1, Opts,
-		{env, lists:keystore(Name, 1, Env, {Name, Value})}),
+	{_, Env} = maps:find(env, Opts),
+	Opts2 = maps:put(env, maps:put(Name, Value, Env), Opts),
 	ok = ranch:set_protocol_options(Ref, Opts2).
-- 
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