@Test public void testTimeo() throws Exception { Ctx ctx = ZMQ.zmqInit(1); assertThat(ctx, notNullValue()); SocketBase sb = ZMQ.zmq_socket(ctx, ZMQ.ZMQ_PULL); assertThat(sb, notNullValue()); boolean rc = ZMQ.zmq_bind(sb, "inproc://timeout_test"); assertThat(rc, is(true)); // Check whether non-blocking recv returns immediately. Msg msg = ZMQ.zmq_recv(sb, ZMQ.ZMQ_DONTWAIT); assertThat(msg, nullValue()); // Check whether recv timeout is honoured. int timeout = 500; ZMQ.zmq_setsockopt(sb, ZMQ.ZMQ_RCVTIMEO, timeout); long watch = ZMQ.zmq_stopwatch_start(); msg = ZMQ.zmq_recv(sb, 0); assertThat(msg, nullValue()); long elapsed = ZMQ.zmq_stopwatch_stop(watch); assertThat(elapsed > 440000 && elapsed < 550000, is(true)); // Check whether connection during the wait doesn't distort the timeout. timeout = 2000; ZMQ.zmq_setsockopt(sb, ZMQ.ZMQ_RCVTIMEO, timeout); Thread thread = new Thread(new Worker(ctx)); thread.start(); watch = ZMQ.zmq_stopwatch_start(); msg = ZMQ.zmq_recv(sb, 0); assertThat(msg, nullValue()); elapsed = ZMQ.zmq_stopwatch_stop(watch); assertThat(elapsed > 1900000 && elapsed < 2100000, is(true)); thread.join(); // Check that timeouts don't break normal message transfer. SocketBase sc = ZMQ.zmq_socket(ctx, ZMQ.ZMQ_PUSH); assertThat(sc, notNullValue()); ZMQ.zmq_setsockopt(sb, ZMQ.ZMQ_RCVTIMEO, timeout); ZMQ.zmq_setsockopt(sb, ZMQ.ZMQ_SNDTIMEO, timeout); rc = ZMQ.zmq_connect(sc, "inproc://timeout_test"); assertThat(rc, is(true)); Msg smsg = new Msg("12345678ABCDEFGH12345678abcdefgh".getBytes(ZMQ.CHARSET)); int r = ZMQ.zmq_send(sc, smsg, 0); assertThat(r, is(32)); msg = ZMQ.zmq_recv(sb, 0); assertThat(msg.size(), is(32)); ZMQ.zmq_close(sc); ZMQ.zmq_close(sb); ZMQ.zmq_term(ctx); }