SELF_DOWN_PEER_LEAVING
state = SELF_DOWN_PEER_LEAVING;
case SELF_DOWN_PEER_LEAVING:
state = SELF_DOWN_PEER_LEAVING;
state = SELF_DOWN_PEER_LEAVING;
if (state == SELF_DOWN_PEER_LEAVING) {
peer->state != SELF_DOWN_PEER_LEAVING) {
n->state = SELF_DOWN_PEER_LEAVING;