ndn::dns Namespace Reference

Classes
struct	AnyAddress
struct	Error
struct	Ipv4Only
struct	Ipv6Only
class	Resolver

Typedefs
typedef boost::asio::ip::address	IpAddress
typedef function< bool(const IpAddress &address)>	AddressSelector
typedef function< void(const IpAddress &address)>	SuccessCallback
typedef function< void(const std::string &reason)>	ErrorCallback

Functions
void	asyncResolve (const std::string &host, const SuccessCallback &onSuccess, const ErrorCallback &onError, boost::asio::io_service &ioService, const AddressSelector &addressSelector=AnyAddress(), time::nanoseconds timeout=time::seconds(4))
	Asynchronously resolve host. More...
IpAddress	syncResolve (const std::string &host, boost::asio::io_service &ioService, const AddressSelector &addressSelector=AnyAddress())
	Synchronously resolve host. More...

Typedef Documentation

IpAddress

typedef boost::asio::ip::address ndn::dns::IpAddress

Definition at line 39 of file dns.hpp.

AddressSelector

typedef function<bool (const IpAddress& address)> ndn::dns::AddressSelector

Definition at line 40 of file dns.hpp.

SuccessCallback

typedef function<void (const IpAddress& address)> ndn::dns::SuccessCallback

Definition at line 78 of file dns.hpp.

ErrorCallback

typedef function<void (const std::string& reason)> ndn::dns::ErrorCallback

Definition at line 79 of file dns.hpp.

Function Documentation

asyncResolve()

void ndn::dns::asyncResolve	(	const std::string &	host,
		const SuccessCallback &	onSuccess,
		const ErrorCallback &	onError,
		boost::asio::io_service &	ioService,
		const AddressSelector &	addressSelector = AnyAddress(),
		time::nanoseconds	timeout = time::seconds(4)
	)

Asynchronously resolve host.

If an address selector predicate is specified, then each resolved IP address is checked against the predicate.

Available address selector predicates:

• dns::AnyAddress()
• dns::Ipv4Address()
• dns::Ipv6Address()

Warning

Even after the DNS resolution has timed out, it's possible that ioService keeps running and onSuccess is invoked at a later time. This could cause segmentation fault if onSuccess is deallocated. To stop the io_service, explicitly invoke ioService.stop().

Definition at line 132 of file dns.cpp.

Referenced by ndn::util::IpHostCanonizeProvider< boost::asio::ip::udp >::canonize().

syncResolve()

IpAddress ndn::dns::syncResolve	(	const std::string &	host,
		boost::asio::io_service &	ioService,
		const AddressSelector &	addressSelector = AnyAddress()
	)

Synchronously resolve host.

If an address selector predicate is specified, then each resolved IP address is checked against the predicate.

Available address selector predicates:

• dns::AnyAddress()
• dns::Ipv4Address()
• dns::Ipv6Address()

Definition at line 145 of file dns.cpp.

References ndn::dns::Resolver::syncResolve().