cat::DNSClient Class Reference

#include <DNSClient.hpp>

Inheritance diagram for cat::DNSClient:

List of all members.

Public Member Functions
bool	Initialize ()
bool	Resolve (const char *hostname, DNSResultCallback, ThreadRefObject *holdRef=0)
void	Shutdown ()
virtual	~DNSClient ()
Protected Member Functions
void	NotifyRequesters (DNSRequest *req)
virtual void	OnClose ()
virtual void	OnRead (ThreadPoolLocalStorage *tls, const NetAddr &src, u8 *data, u32 bytes)
virtual void	OnUnreachable (const NetAddr &src)
void	ProcessDNSResponse (DNSRequest *req, int qdcount, int ancount, u8 *data, u32 bytes)
Private Member Functions
bool	BindToRandomPort (bool ignoreUnreachable)
void	CacheAdd (DNSRequest *req)
DNSRequest *	CacheGet (const char *hostname)
void	CacheKill (DNSRequest *req)
	CAT_SINGLETON (DNSClient)
bool	GetServerAddr ()
bool	GetUnusedID (u16 &id)
bool	IsValidHostname (const char *hostname)
bool	PerformLookup (DNSRequest *req)
bool	PostDNSPacket (DNSRequest *req, u32 now)
DNSRequest *	PullRequest (u16 id)
bool	ThreadFunction (void *param)
Private Attributes
DNSRequest *	_cache_head
Mutex	_cache_lock
int	_cache_size
DNSRequest *	_cache_tail
FortunaOutput *	_csprng
volatile bool	_dns_unavailable
WaitableFlag	_kill_flag
DNSRequest *	_request_head
Mutex	_request_lock
int	_request_queue_size
DNSRequest *	_request_tail
NetAddr	_server_addr
Static Private Attributes
static const int	DNS_THREAD_KILL_TIMEOUT = 10000
static const int	TICK_RATE = 200

---

Detailed Description

Definition at line 90 of file DNSClient.hpp.

---

Constructor & Destructor Documentation

virtual cat::DNSClient::~DNSClient

(

)

[virtual]

---

Member Function Documentation

bool cat::DNSClient::BindToRandomPort

(

bool

ignoreUnreachable

)

[private]

void cat::DNSClient::CacheAdd

(

DNSRequest *

req

)

[private]

DNSRequest* cat::DNSClient::CacheGet

(

const char *

hostname

)

[private]

void cat::DNSClient::CacheKill

(

DNSRequest *

req

)

[private]

cat::DNSClient::CAT_SINGLETON

(

DNSClient

)

[inline, private]

Definition at line 95 of file DNSClient.hpp.

References _cache_head, _cache_size, _cache_tail, _dns_unavailable, _request_head, _request_queue_size, _request_tail, _server_addr, and cat::NetAddr::Invalidate().

        : UDPEndpoint(REFOBJ_PRIO_0+5)
    {
        _server_addr.Invalidate();
        _dns_unavailable = true;

        _cache_head = _cache_tail = 0;
        _cache_size = 0;

        _request_head = _request_tail = 0;
        _request_queue_size = 0;
    }

bool cat::DNSClient::GetServerAddr

(

)

[private]

bool cat::DNSClient::GetUnusedID

(

u16 &

id

)

[private]

bool cat::DNSClient::Initialize

(

)

bool cat::DNSClient::IsValidHostname

(

const char *

hostname

)

[private]

void cat::DNSClient::NotifyRequesters

(

DNSRequest *

req

)

[protected]

virtual void cat::DNSClient::OnClose

(

)

[protected, virtual]

Implements cat::UDPEndpoint.

virtual void cat::DNSClient::OnRead	(	ThreadPoolLocalStorage *	tls,
		const NetAddr &	src,
		u8 *	data,
		u32	bytes
	)		[protected, virtual]

Implements cat::UDPEndpoint.

virtual void cat::DNSClient::OnUnreachable

(

const NetAddr &

src

)

[protected, virtual]

Reimplemented from cat::UDPEndpoint.

bool cat::DNSClient::PerformLookup

(

DNSRequest *

req

)

[private]

bool cat::DNSClient::PostDNSPacket	(	DNSRequest *	req,
		u32	now
	)		[private]

void cat::DNSClient::ProcessDNSResponse	(	DNSRequest *	req,
		int	qdcount,
		int	ancount,
		u8 *	data,
		u32	bytes
	)		[protected]

DNSRequest* cat::DNSClient::PullRequest

(

u16

id

)

[private]

bool cat::DNSClient::Resolve	(	const char *	hostname,
		DNSResultCallback	,
		ThreadRefObject *	holdRef = 0
	)

void cat::DNSClient::Shutdown

(

)

bool cat::DNSClient::ThreadFunction

(

void *

param

)

[private, virtual]

Implements cat::Thread.

---

Member Data Documentation

DNSRequest* cat::DNSClient::_cache_head [private]

Definition at line 158 of file DNSClient.hpp.

Referenced by CAT_SINGLETON().

Mutex cat::DNSClient::_cache_lock [private]

Definition at line 157 of file DNSClient.hpp.

int cat::DNSClient::_cache_size [private]

Definition at line 160 of file DNSClient.hpp.

Referenced by CAT_SINGLETON().

DNSRequest* cat::DNSClient::_cache_tail [private]

Definition at line 159 of file DNSClient.hpp.

Referenced by CAT_SINGLETON().

FortunaOutput* cat::DNSClient::_csprng [private]

Definition at line 144 of file DNSClient.hpp.

volatile bool cat::DNSClient::_dns_unavailable [private]

Definition at line 143 of file DNSClient.hpp.

Referenced by CAT_SINGLETON().

WaitableFlag cat::DNSClient::_kill_flag [private]

Definition at line 183 of file DNSClient.hpp.

DNSRequest* cat::DNSClient::_request_head [private]

Definition at line 148 of file DNSClient.hpp.

Referenced by CAT_SINGLETON().

Mutex cat::DNSClient::_request_lock [private]

Definition at line 147 of file DNSClient.hpp.

int cat::DNSClient::_request_queue_size [private]

Definition at line 150 of file DNSClient.hpp.

Referenced by CAT_SINGLETON().

DNSRequest* cat::DNSClient::_request_tail [private]

Definition at line 149 of file DNSClient.hpp.

Referenced by CAT_SINGLETON().

NetAddr cat::DNSClient::_server_addr [private]

Definition at line 142 of file DNSClient.hpp.

Referenced by CAT_SINGLETON().

const int cat::DNSClient::DNS_THREAD_KILL_TIMEOUT = 10000 [static, private]

Definition at line 93 of file DNSClient.hpp.

const int cat::DNSClient::TICK_RATE = 200 [static, private]

Definition at line 92 of file DNSClient.hpp.

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

• DNSClient.hpp