ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
c->async = ZOOM_options_get_bool(c->options, "async", 0);
ZOOM_options_get_int(c->options, "preferredMessageSize", 1024*1024);
c->async = ZOOM_options_get_bool(c->options, "async", 0);