public void CheckSendAgainException()
{
using (var router = new RouterSocket())
using (var dealer = new DealerSocket())
{
var port = router.BindRandomPort("tcp://127.0.0.1");
router.Options.Linger = TimeSpan.Zero;
dealer.Options.SendHighWatermark = 1;
dealer.Options.Linger = TimeSpan.Zero;
dealer.Connect("tcp://127.0.0.1:" + port);
#pragma warning disable 618
dealer.Send("1", dontWait: true, sendMore: false);
dealer.Send("2", dontWait: true, sendMore: false);
#pragma warning restore 618
}
}