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-rw-r--r--src/cowboy_websocket.erl5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/cowboy_websocket.erl b/src/cowboy_websocket.erl
index 6b89686..1df32c9 100644
--- a/src/cowboy_websocket.erl
+++ b/src/cowboy_websocket.erl
@@ -19,6 +19,10 @@
-module(cowboy_websocket).
-behaviour(cowboy_sub_protocol).
+%% Ignore the deprecation warning for crypto:sha/1.
+%% @todo Remove when we support only R16B+.
+-compile({nowarn_deprecated_function, {crypto, sha, 1}}).
+
%% API.
-export([upgrade/4]).
@@ -176,6 +180,7 @@ upgrade_error(Req, Env) ->
websocket_handshake(State=#state{
transport=Transport, key=Key, deflate_frame=DeflateFrame},
Req, HandlerState) ->
+ %% @todo Change into crypto:hash/2 for R17B+ or when supporting only R16B+.
Challenge = base64:encode(crypto:sha(
<< Key/binary, "258EAFA5-E914-47DA-95CA-C5AB0DC85B11" >>)),
Extensions = case DeflateFrame of