Re: ZeroMQ Linger option

[Jeff Long]

At socket shutdown, LINGER determines how long close(2) or shutdown(2) will block waiting for queue messages to be sent. See man socket(7).

On Mon, Aug 10, 2020 at 7:00 PM Cameron Matson <ncmatson95@gmail.com> wrote:

Hi all,

Can someone help me understand what's going on with any of the ZMQ Message Sink blocks?  The block takes a timeout parameter which is assigned to d_timeout, but ultimately it looks like the zmq.LINGER option (which I believe is how long zmq will block before dropping the frame) is always set to a different variable, time, which is initialized in the constructor to be 0 that is used for the setsockopt call.

if (major < 3) {
	d_timeout = timeout * 1000;
	}
	d_context = new zmq::context_t(1);
	d_socket = new zmq::socket_t(*d_context, ZMQ_REP);
	int time = 0;
	d_socket->setsockopt(ZMQ_LINGER, &time, sizeof(time));

Am I missing something?

Thanks,

Cameron