urandom.yaws

<erl>

out(A) ->
    Self = self(),
    spawn(fun() ->
                  %% Create a random number
                  {_A1, A2, A3} = now(),
                  random:seed(erlang:phash(node(), 100000),
                              erlang:phash(A2, A3),
                              A3),
                  Sz = random:uniform(100000),

                  %% Read random junk
                  S="dd if=/dev/urandom count=1 bs=" ++
                      integer_to_list(Sz) ++ " 2>/dev/null",
                  P = open_port({spawn, S}, [binary,stream, eof]),

                  rec_loop(Self, P)
          end),

    {streamcontent, "application/octet-stream", <<>>}.


rec_loop(YawsPid, P) ->
    receive
        {P, {data, BinData}} ->
            yaws_api:stream_chunk_deliver(YawsPid, BinData),
            rec_loop(YawsPid, P);
        {P, eof} ->
            port_close(P),
            yaws_api:stream_chunk_end(YawsPid),
            exit(normal)
    end.


</erl>