{

public:

typedef union {

sockaddr as_sockaddr;

sockaddr_storage as_sockaddr_storage;

} raw;

private:

socklen_t size_;

raw addr_;

/* private constructor given ip/host, service/port, and optional hints */

Address( const std::string & node, const std::string & service, const addrinfo * hints );

public:

/* constructors */

Address();

Address( const raw & addr, const size_t size );

Address( const sockaddr & addr, const size_t size );

/* construct by resolving host name and service name */

Address( const std::string & hostname, const std::string & service );

/* construct with numerical IP address and numeral port number */

Address( const std::string & ip, const uint16_t port );

/* accessors */

std::pair<std::string, uint16_t> ip_port() const;

std::string ip() const { return ip_port().first; }

uint16_t port() const { return ip_port().second; }

std::string to_string() const;

socklen_t size() const { return size_; }

const sockaddr & to_sockaddr() const;

/* equality */

bool operator==( const Address & other ) const;