XBT_PUBLIC(char) ns3_get_socket_is_finished(void *socket);
XBT_PUBLIC(void *) ns3_add_host(char * id);
XBT_PUBLIC(void *) ns3_add_host_cluster(char * id);
XBT_PUBLIC(char) ns3_get_socket_is_finished(void *socket);
XBT_PUBLIC(void *) ns3_add_host(char * id);
XBT_PUBLIC(void *) ns3_add_host_cluster(char * id);