Is there anyway that can set 'time-out' for nng_stream?

[alawn-wang]

I create a websocket connection by nng_stream_dialer_dial, and then allocate an aio object to send messages. I have to wait the aio finish after call nng_stream_send to reuse the aio object. I want to set 'time-out' for the connect, is there anyway to do this?