#include <xpc/xpc.h>

int main(void) {
    xpc_object_t message = xpc_dictionary_create(NULL, NULL, 0);

    xpc_connection_t connection = xpc_connection_create_mach_service("com.getdropbox.dropbox.dbkextd", NULL, 0);
    xpc_connection_set_event_handler(connection, ^(xpc_object_t object) {});
    xpc_connection_resume(connection);

    xpc_object_t reply = xpc_connection_send_message_with_reply_sync(connection, message);

    xpc_release(connection);
}