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-rw-r--r--src/cowboy_websocket.erl2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cowboy_websocket.erl b/src/cowboy_websocket.erl
index 603889f..693a920 100644
--- a/src/cowboy_websocket.erl
+++ b/src/cowboy_websocket.erl
@@ -91,7 +91,7 @@ websocket_upgrade(State, Req) ->
%% @todo Should probably send a 426 if the Upgrade header is missing.
[<<"websocket">>] = cowboy_req:parse_header(<<"upgrade">>, Req),
Version = cowboy_req:header(<<"sec-websocket-version">>, Req),
- IntVersion = list_to_integer(binary_to_list(Version)),
+ IntVersion = binary_to_integer(Version),
true = (IntVersion =:= 7) orelse (IntVersion =:= 8)
orelse (IntVersion =:= 13),
Key = cowboy_req:header(<<"sec-websocket-key">>, Req),