Using socket module in production?

[pablo platt]

Hi,

Is it safe to use the NIF socket module for UDP in production in OTP 23?
It's working in my tests but I'm not sure if it's considered unstable or if
I'm missing configuration or error handling.

This is how I'm using it:

open() ->
  {ok, Socket} = socket:open(inet, dgram, udp),
  {ok, Port} = socket:bind(Socket, any),
  {Socket, Port}.

active_once(Socket) ->
    case socket:recvfrom(Socket, 0, [], nowait) of
        {ok, {#{port := Port, addr := Addr}, Data}} ->
            {udp, Addr, Port, Data};
        {select, {select_info, _SelectTag, SelectRef}} ->
            SelectRef;
        {error, Reason} ->
            exit(Reason),
            error
    end.

send(Socket, Addr, Port, Data) ->
    Dest = #{family => inet,
             port => Port,
             addr => Addr},
    case socket:sendto(Socket, Data, Dest, [], nowait) of
        ok -> ok;
        {select, {select_info, _SelectTag, _SelectRef}} ->
            % need to wait for {'$socket', Socket, select, SelectRef}  and
resend Data?
            ok
    end.

close(Socket) ->
    socket:close(Socket).

% listen for select ref
handle_info({'$socket', Socket, select, SelectRef}, _State) ->
    case socket:recvfrom(Socket, 0, [], nowait) of
        {ok, {#{port := Port, addr := Addr}, Data}} ->
            % handle Data
            ok;
        {select, {select_info, _SelectTag, SelectRef}} ->
           SelectRef;
     {error, Reason} ->
         exit(Reason),
         error
    end,
    {noreply, State}.
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