#include <I_DNSProcessor.h>

Collaboration diagram for DNSProcessor:

Data Structures
struct	Options
	Options for host name resolution. More...
Public Member Functions
Action *	gethostbyname (Continuation cont, const char name, Options const &opt)
Action *	getSRVbyname (Continuation cont, const char name, Options const &opt)
Action *	gethostbyname (Continuation cont, const char name, int len, Options const &opt)
Action *	gethostbyaddr (Continuation cont, IpAddr const ip, Options const &opt)
int	start (int no_of_extra_dns_threads=0, size_t stacksize=DEFAULT_STACKSIZE)
	Starts execution of the processor.
void	open (sockaddr const *ns=0, int options=_res.options)
	DNSProcessor ()
Action *	getby (const char x, int len, int type, Continuation cont, Options const &opt)
	Internal implementation for all getXbyY methods.
void	dns_init ()
Data Fields
EThread *	thread
DNSHandler *	handler
ts_imp_res_state	l_res
IpEndpoint	local_ipv6
IpEndpoint	local_ipv4

Detailed Description

Definition at line 66 of file I_DNSProcessor.h.

Constructor & Destructor Documentation

DNSProcessor::DNSProcessor ( )

Definition at line 341 of file DNS.cc.

References l_res, local_ipv4, and local_ipv6.

Member Function Documentation

void DNSProcessor::dns_init ( )

Definition at line 236 of file DNS.cc.

References ats_free(), ats_ip_invalidate(), ats_ip_nptop(), ats_ip_port_cast(), ats_ip_pton(), ats_is_ip4(), ats_is_ip6(), ats_strdup, Debug, dns_local_ipv4, dns_local_ipv6, dns_ns_list, dns_ns_rr, dns_resolv_conf, ink_res_init(), l_res, local_ipv4, local_ipv6, IpEndpoint::sa, try_server_names, and Warning.

Referenced by start().

Action * DNSProcessor::getby	(	const char *	x,
		int	len,
		int	type,
		Continuation *	cont,
		Options const &	opt
	)

Internal implementation for all getXbyY methods.

For host resolution queries pass T_A for type. It will be adjusted as needed based on opt.host_res_style.

For address resolution ( type is T_PTR ), x should be a sockaddr cast to char const* .

Definition at line 1091 of file DNS.cc.

References DNSEntry::action, Debug, dns_retries, dnsEntryAllocator, EVENT_IMMEDIATE, Continuation::handleEvent(), DNSEntry::init(), Continuation::mutex, MUTEX_TRY_LOCK, DNSEntry::retries, EThread::schedule_imm(), this_ethread(), thread, and DNSProcessor::Options::timeout.

Referenced by gethostbyaddr(), gethostbyname(), and getSRVbyname().

Action * DNSProcessor::gethostbyaddr	(	Continuation *	cont,
		IpAddr const *	ip,
		Options const &	opt
	)			`[inline]`

Definition at line 178 of file I_DNSProcessor.h.

References getby().

Referenced by HostDBContinuation::do_dns().

Action * DNSProcessor::gethostbyname	(	Continuation *	cont,
		const char *	name,
		Options const &	opt
	)			`[inline]`

Definition at line 166 of file I_DNSProcessor.h.

References getby().

Referenced by HostDBContinuation::do_dns(), TestDnsStateMachine::processEvent(), and TestProxy::startEvent().

Action * DNSProcessor::gethostbyname	(	Continuation *	cont,
		const char *	name,
		int	len,
		Options const &	opt
	)			`[inline]`

Definition at line 172 of file I_DNSProcessor.h.

References getby().

Action * DNSProcessor::getSRVbyname	(	Continuation *	cont,
		const char *	name,
		Options const &	opt
	)			`[inline]`

Definition at line 160 of file I_DNSProcessor.h.

References getby().

Referenced by HostDBContinuation::do_dns().

void DNSProcessor::open	(	sockaddr const *	ns = `0`,
		int	options = `_res.options`
	)

Definition at line 210 of file DNS.cc.

References ats_ip_copy(), ats_ip_invalidate(), dns_handler_initialized, handler, DNSHandler::ip, l_res, local_ipv4, DNSHandler::local_ipv4, local_ipv6, DNSHandler::local_ipv6, DNSHandler::m_res, Thread::mutex, Continuation::mutex, DNSHandler::options, IpEndpoint::sa, EThread::schedule_imm(), SET_CONTINUATION_HANDLER, DNSHandler::startEvent(), and thread.

Referenced by start().

int DNSProcessor::start	(	int	number_of_threads = `0`,
		size_t	stacksize = `DEFAULT_STACKSIZE`
	)			`[virtual]`

Starts execution of the processor.

Attempts to start the number of threads specified for the processor, initializes their states and sets them running. On failure it returns a negative value.

Parameters:

	number_of_threads	Positive value indicating the number of threads to spawn for the processor.
	stacksize	The thread stack size to use for this processor.

Reimplemented from Processor.

Definition at line 167 of file DNS.cc.

References dns_failover_number, dns_failover_period, dns_failover_try_period, dns_init(), dns_local_ipv4, dns_local_ipv6, dns_max_dns_in_flight, dns_ns_list, dns_ns_rr, dns_resolv_conf, dns_retries, dns_search, dns_thread, dns_timeout, dns_validate_qname, ET_CALL, ET_DNS, eventProcessor, EventProcessor::eventthread, SplitDNSConfig::gsplit_dns_enabled, initialize_thread_for_net(), open(), REC_EstablishStaticConfigInt32, REC_ReadConfigStringAlloc, SplitDNSConfig::reconfigure(), EventProcessor::spawn_event_threads(), and thread.