trantor::Resolver Class Reference

This class represents an asynchronous DNS resolver. More...

#include <trantor/net/Resolver.h>

Public Types
using	Callback = std::function<void(const trantor::InetAddress&)>
using	ResolverResultsCallback

Public Member Functions
virtual void	resolve (const std::string &hostname, const Callback &callback)=0
	Resolve an address asynchronously.
virtual void	resolve (const std::string &hostname, const ResolverResultsCallback &callback)=0
	Resolve an address array asynchronously.

Static Public Member Functions
static std::shared_ptr< Resolver >	newResolver (EventLoop *loop=nullptr, size_t timeout=60)
	Create a new DNS resolver.
static bool	isCAresUsed ()
	Check whether the c-ares library is used.

Detailed Description

This class represents an asynchronous DNS resolver.

Note

Although the c-ares library is not essential, it is recommended to install it for higher performance

Member Typedef Documentation

ResolverResultsCallback

using trantor::Resolver::ResolverResultsCallback

Initial value:

 
        std::function<void(const std::vector<trantor::InetAddress>&)>

Member Function Documentation

isCAresUsed()

bool trantor::Resolver::isCAresUsed ( )

static

Check whether the c-ares library is used.

Returns

true

false

newResolver()

std::shared_ptr< Resolver > trantor::Resolver::newResolver ( EventLoop * loop = nullptr, size_t timeout = 60 )

static

Create a new DNS resolver.

Parameters

loop	The event loop in which the DNS resolver runs.
timeout	The timeout in seconds for DNS.

Returns

std::shared_ptr<Resolver>

resolve() [1/2]

virtual void trantor::Resolver::resolve ( const std::string & hostname, const Callback & callback )

pure virtual

Resolve an address asynchronously.

Parameters

hostname
callback

resolve() [2/2]

virtual void trantor::Resolver::resolve ( const std::string & hostname, const ResolverResultsCallback & callback )

pure virtual

Resolve an address array asynchronously.

Parameters

hostname
callback

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The documentation for this class was generated from the following file:

• trantor/net/Resolver.h