%% Feel free to use, reuse and abuse the code in this file. -module(ws_subprotocol). -export([init/2]). -export([websocket_handle/2]). -export([websocket_info/2]). init(Req, Opts) -> [Protocol | _] = cowboy_req:parse_header(<<"sec-websocket-protocol">>, Req), Req2 = cowboy_req:set_resp_header(<<"sec-websocket-protocol">>, Protocol, Req), {cowboy_websocket, Req2, Opts, #{ idle_timeout => 1000 }}. websocket_handle(_Frame, State) -> {ok, State}. websocket_info(_Info, State) -> {ok, State}.