add: node->state = OPN_NODE_STATE_DISCONNECTED;
context: OpnNode *opn_node_new(in_addr_t ip, in_port_t port){	OpnNode *node;	if (!(node = malloc(sizeof(OpnNode))))		return NULL;	memset(node, 0, sizeof(OpnNode));	node->ip = ip;	node->port = port;		return node;}