#include <ConnOpener.h>

Inheritance diagram for Comm::ConnOpener:

Collaboration diagram for Comm::ConnOpener:

[legend]

Classes
struct	Calls
	handles to calls which we may need to cancel. More...

Public Types
typedef CbcPointer< ConnOpener >	Pointer

Public Member Functions
virtual bool	doneAll () const
	whether positive goal has been reached More...

	ConnOpener (const Comm::ConnectionPointer &, const AsyncCall::Pointer &handler, time_t connect_timeout)

	~ConnOpener ()

void	setHost (const char *)
	set the hostname note for this connection More...

const char *	getHost () const
	get the hostname noted for this connection More...

bool	canBeCalled (AsyncCall &call) const
	whether we can be called More...

void	callStart (AsyncCall &call)

virtual void	callEnd ()
	called right after the called job method More...

virtual void	callException (const std::exception &e)
	called when the job throws during an async call More...

void	handleStopRequest ()
	process external request to terminate now (i.e. during this async call) More...

virtual void *	toCbdata ()=0

Static Public Member Functions
static void	Start (const Pointer &job)

Public Attributes
const InstanceId< AsyncJob >	id
	job identifier More...

Protected Member Functions
virtual void	start ()
	called by AsyncStart; do not call directly More...

virtual void	swanSong ()

void	deleteThis (const char *aReason)

void	mustStop (const char *aReason)

bool	done () const
	the job is destroyed in callEnd() when done() More...

virtual const char *	status () const
	internal cleanup; do not call directly More...

Protected Attributes
const char *	stopReason
	reason for forcing done() to be true More...

const char *	typeName
	kid (leaf) class name, for debugging More...

AsyncCall::Pointer	inCall
	the asynchronous call being handled, if any More...

bool	started_ = false
	Start() has finished successfully. More...

bool	swanSang_ = false
	swanSong() was called More...

Private Member Functions
	CBDATA_CLASS (ConnOpener)

	ConnOpener (const ConnOpener &)

ConnOpener &	operator= (const ConnOpener &c)

void	earlyAbort (const CommCloseCbParams &)

void	timeout (const CommTimeoutCbParams &)

void	sendAnswer (Comm::Flag errFlag, int xerrno, const char *why)

void	doConnect ()
	Make an FD connection attempt. More...

void	connected ()

void	lookupLocalAddress ()

void	retrySleep ()
	Close and wait a little before trying to open and connect again. More...

void	restart ()
	called at the end of Comm::ConnOpener::DelayedConnectRetry event More...

bool	createFd ()

void	closeFd ()
	cleans I/O state and ends I/O for temporaryFd_ More...

void	keepFd ()
	cleans I/O state and moves temporaryFd_ to the conn_ for long-term use More...

void	cleanFd ()

void	cancelSleep ()
	cleans up this job sleep state More...

Static Private Member Functions
static void	InProgressConnectRetry (int fd, void *data)

static void	DelayedConnectRetry (void *data)

Private Attributes
char *	host_
	domain name we are trying to connect to. More...

int	temporaryFd_
	the FD being opened. Do NOT set conn_->fd until it is fully open. More...

Comm::ConnectionPointer	conn_
	single connection currently to be opened. More...

AsyncCall::Pointer	callback_
	handler to be called on connection completion. More...

int	totalTries_
	total number of connection attempts over all destinations so far. More...

int	failRetries_
	number of retries current destination has been tried. More...

time_t	deadline_
	if we are not done by then, we will call back with Comm::TIMEOUT More...

struct Comm::ConnOpener::Calls	calls_

Detailed Description

Asynchronously opens a TCP connection. Returns CommConnectCbParams: either Comm::OK with an open connection or another Comm::Flag with a closed one.

Definition at line 24 of file ConnOpener.h.

Member Typedef Documentation

◆ Pointer

typedef CbcPointer<ConnOpener> Comm::ConnOpener::Pointer

Definition at line 29 of file ConnOpener.h.

Constructor & Destructor Documentation

◆ ConnOpener() [1/2]

Comm::ConnOpener::ConnOpener	(	const Comm::ConnectionPointer &	c,
		const AsyncCall::Pointer &	handler,
		time_t	connect_timeout
	)

Definition at line 33 of file ConnOpener.cc.

References assert, conn_, debugs, and Comm::Connection::isOpen().

◆ ~ConnOpener()

Comm::ConnOpener::~ConnOpener ( )

Definition at line 54 of file ConnOpener.cc.

References safe_free.

◆ ConnOpener() [2/2]

Comm::ConnOpener::ConnOpener ( const ConnOpener & )

private

Member Function Documentation

◆ callEnd()

void AsyncJob::callEnd ( )

virtualinherited

called right after the called job method

Reimplemented in Adaptation::Icap::Xaction.

Definition at line 137 of file AsyncJob.cc.

References assert, AsyncCall::debugLevel, debugs, AsyncCall::debugSection, AsyncJob::done(), HERE(), AsyncJob::inCall, NULL, AsyncJob::started_, AsyncJob::status(), AsyncJob::swanSang_, AsyncJob::swanSong(), and AsyncJob::typeName.

Referenced by Adaptation::Icap::Xaction::callEnd(), and AsyncJob::deleteThis().

◆ callException()

void AsyncJob::callException ( const std::exception & e )

virtualinherited

Reimplemented in ClientHttpRequest, Ftp::Server, Ipc::Inquirer, Ipc::Forwarder, Adaptation::Icap::Xaction, Adaptation::Icap::ServiceRep, Adaptation::Icap::ModXact, and ConnStateData.

Definition at line 128 of file AsyncJob.cc.

References cbdataReferenceValid(), debugs, Must, AsyncJob::mustStop(), and CbdataParent::toCbdata().

Referenced by ConnStateData::callException(), Adaptation::Icap::Xaction::callException(), Ipc::Forwarder::callException(), Ipc::Inquirer::callException(), and Ftp::Server::callException().

◆ callStart()

void AsyncJob::callStart ( AsyncCall & call )

inherited

called just before the called method

Definition at line 115 of file AsyncJob.cc.

References cbdataReferenceValid(), AsyncCall::debugLevel, debugs, AsyncCall::debugSection, AsyncJob::inCall, Must, AsyncJob::status(), CbdataParent::toCbdata(), and AsyncJob::typeName.

◆ canBeCalled()

bool AsyncJob::canBeCalled ( AsyncCall & call ) const

inherited

Definition at line 102 of file AsyncJob.cc.

References AsyncCall::cancel(), debugs, HERE(), AsyncJob::inCall, and NULL.

◆ cancelSleep()

void Comm::ConnOpener::cancelSleep ( )

private

Definition at line 410 of file ConnOpener.cc.

References debugs.

◆ CBDATA_CLASS()

Comm::ConnOpener::CBDATA_CLASS ( ConnOpener )

private

◆ cleanFd()

void Comm::ConnOpener::cleanFd ( )

private

cleans up this job I/O state without closing temporaryFd required before closing temporaryFd or keeping it in conn_ leaves FD bare so must only be called via closeFd() or keepFd()

Definition at line 174 of file ConnOpener.cc.

References comm_remove_close_handler(), COMM_SELECT_WRITE, debugs, fd_table, Must, NULL, Comm::SetSelect(), fde::timeout, fde::timeoutHandler, fde::write_data, and fde::write_handler.

◆ closeFd()

void Comm::ConnOpener::closeFd ( )

private

Definition at line 220 of file ConnOpener.cc.

References comm_close.

◆ connected()

void Comm::ConnOpener::connected ( )

private

Definition at line 328 of file ConnOpener.cc.

References fd_table, Must, and Comm::OK.

◆ createFd()

bool Comm::ConnOpener::createFd ( )

private

Create a socket for the future connection or return false. If false is returned, done() is guaranteed to return true and end the job.

Definition at line 279 of file ConnOpener.cc.

References assert, comm_add_close_handler(), comm_openex(), debugs, earlyAbort(), Comm::ERR_CONNECT, fd_table, CachePeer::flags, JobCallback, Must, NULL, CachePeer::params, Ip::Qos::setSockNfmark(), Ip::Qos::setSockTos(), squid_curtime, Squid_MaxFD, and timeout().

◆ DelayedConnectRetry()

void Comm::ConnOpener::DelayedConnectRetry ( void * data )

staticprivate

Definition at line 494 of file ConnOpener.cc.

References assert, JobCallback, restart(), and ScheduleCallHere.

Referenced by retrySleep().

◆ deleteThis()

void AsyncJob::deleteThis ( const char * aReason )

protectedinherited

Definition at line 50 of file AsyncJob.cc.

References asyncCall(), AsyncJob::callEnd(), debugs, AsyncJob::inCall, JobMemFun(), Must, NULL, AsyncJob::stopReason, and AsyncJob::typeName.

Referenced by ConnStateData::connStateClosed().

◆ doConnect()

void Comm::ConnOpener::doConnect ( )

private

Definition at line 357 of file ConnOpener.cc.

References comm_connect_addr(), COMM_SELECT_WRITE, Config, SquidConfig::connect_retries, debugs, Comm::ERR_CONNECT, HERE(), Comm::INPROGRESS, InProgressConnectRetry(), Must, NULL, Comm::OK, Comm::SetSelect(), and xstrerr().

Referenced by InProgressConnectRetry().

◆ done()

bool AsyncJob::done ( ) const

protectedinherited

Definition at line 91 of file AsyncJob.cc.

References AsyncJob::doneAll(), NULL, and AsyncJob::stopReason.

Referenced by AsyncJob::callEnd(), HappyConnOpener::checkForNewConnection(), and Downloader::downloadFinished().

◆ doneAll()

bool Comm::ConnOpener::doneAll ( ) const

virtual

Reimplemented from AsyncJob.

Definition at line 60 of file ConnOpener.cc.

References AsyncJob::doneAll(), Must, and NULL.

◆ earlyAbort()

void Comm::ConnOpener::earlyAbort ( const CommCloseCbParams & io )

private

Abort connection attempt. Handles the case(s) when a partially setup connection gets closed early.

Definition at line 452 of file ConnOpener.cc.

References CommCommonCbParams::conn, debugs, Comm::ERR_CLOSING, HERE(), NULL, and CommCommonCbParams::xerrno.

Referenced by createFd().

◆ getHost()

const char * Comm::ConnOpener::getHost ( ) const

Definition at line 113 of file ConnOpener.cc.

◆ handleStopRequest()

void AsyncJob::handleStopRequest ( )

inlineinherited

Definition at line 71 of file AsyncJob.h.

References AsyncJob::mustStop().

◆ InProgressConnectRetry()

void Comm::ConnOpener::InProgressConnectRetry	(	int	fd,
		void *	data
	)

staticprivate

Definition at line 476 of file ConnOpener.cc.

References assert, doConnect(), JobCallback, and ScheduleCallHere.

Referenced by doConnect().

◆ keepFd()

void Comm::ConnOpener::keepFd ( )

private

Definition at line 239 of file ConnOpener.cc.

References Must, and NULL.

◆ lookupLocalAddress()

void Comm::ConnOpener::lookupLocalAddress ( )

private

Lookup local-end address and port of the TCP link just opened. This ensure the connection local details are set correctly

Definition at line 431 of file ConnOpener.cc.

References addrinfo::ai_addr, addrinfo::ai_addrlen, DBG_IMPORTANT, debugs, Ip::Address::FreeAddr(), HERE(), Ip::Address::InitAddr(), NULL, and xstrerr().

◆ mustStop()

void AsyncJob::mustStop ( const char * aReason )

protectedinherited

◆ operator=()

ConnOpener& Comm::ConnOpener::operator= ( const ConnOpener & c )

private

◆ restart()

void Comm::ConnOpener::restart ( )

private

Definition at line 267 of file ConnOpener.cc.

References debugs.

Referenced by DelayedConnectRetry().

◆ retrySleep()

void Comm::ConnOpener::retrySleep ( )

private

Definition at line 398 of file ConnOpener.cc.

References DelayedConnectRetry(), eventAdd(), and Must.

◆ sendAnswer()

void Comm::ConnOpener::sendAnswer	(	Comm::Flag	errFlag,
		int	xerrno,
		const char *	why
	)

private

Connection attempt are completed. One way or the other. Pass the results back to the external handler.

Definition at line 123 of file ConnOpener.cc.

References assert, Config, debugs, ipcacheMarkBadAddr(), ipcacheMarkGoodAddr(), netdbDeleteAddrNetwork(), NULL, Comm::OK, SquidConfig::onoff, CachePeer::params, ScheduleCallHere, and SquidConfig::test_reachability.

◆ setHost()

void Comm::ConnOpener::setHost ( const char * new_host )

Definition at line 101 of file ConnOpener.cc.

References NULL, safe_free, and xstrdup.

Referenced by idnsInitVC(), and peerProbeConnect().

◆ start()

void Comm::ConnOpener::start ( )

protectedvirtual

Reimplemented from AsyncJob.

Definition at line 251 of file ConnOpener.cc.

References Ip::EnableIpv6, IPV6_SPECIAL_V4MAPPING, Must, and NULL.

◆ Start()

void AsyncJob::Start ( const Pointer & job )

staticinherited

Promises to start the configured job (eventually). The job is deemed to be running asynchronously beyond this point, so the caller should only access the job object via AsyncCalls rather than directly.

swanSong() is only called for jobs for which this method has returned successfully (i.e. without throwing).

Definition at line 24 of file AsyncJob.cc.

References CallJobHere, AsyncJob::start(), and AsyncJob::started_.

Referenced by Ftp::Server::AcceptCtrlConnection(), clientListenerConnectionOpened(), Ipc::Coordinator::handleCacheMgrRequest(), Ipc::Coordinator::handleSnmpRequest(), httpAccept(), httpsAccept(), httpStart(), idnsInitVC(), Ftp::Gateway::listenForDataChannel(), Ftp::Server::listenForDataConnection(), Log::TcpLogger::Open(), peerProbeConnect(), Mgr::FunAction::respond(), Mgr::InfoAction::respond(), Ipc::SendMessage(), Mgr::Inquirer::sendResponse(), snmpConstructReponse(), SquidMain(), CacheManager::start(), Adaptation::AccessCheck::Start(), Rock::Rebuild::Start(), JobWaitBase::start_(), BodyPipe::startAutoConsumptionIfNeeded(), Ftp::StartGateway(), Ftp::StartRelay(), PeerPoolMgrsRr::syncConfig(), and Rock::SwapDir::updateHeaders().

◆ status()

const char * AsyncJob::status ( ) const

protectedvirtualinherited

for debugging, starts with space

Reimplemented in HappyConnOpener, Security::PeerConnector, Ipc::Inquirer, Comm::TcpAcceptor, Http::Tunneler, Adaptation::Initiate, Adaptation::Icap::Xaction, Adaptation::Icap::ServiceRep, and Adaptation::Ecap::XactionRep.

Definition at line 167 of file AsyncJob.cc.

References MemBuf::append(), Packable::appendf(), MemBuf::content(), NULL, MemBuf::reset(), AsyncJob::stopReason, and MemBuf::terminate().

Referenced by AsyncJob::callEnd(), AsyncJob::callStart(), Adaptation::Initiate::status(), and Comm::TcpAcceptor::status().

◆ swanSong()

void Comm::ConnOpener::swanSong ( )

protectedvirtual

Reimplemented from AsyncJob.

Definition at line 78 of file ConnOpener.cc.

References Comm::ERR_CONNECT, NULL, and AsyncJob::swanSong().

◆ timeout()

void Comm::ConnOpener::timeout ( const CommTimeoutCbParams & )

private

Handles the case(s) when a partially setup connection gets timed out. NP: When commSetConnTimeout accepts generic CommCommonCbParams this can die.

Definition at line 465 of file ConnOpener.cc.

References debugs, HERE(), NULL, and Comm::TIMEOUT.

Referenced by createFd().

◆ toCbdata()

virtual void* CbdataParent::toCbdata ( )

pure virtualinherited

Implemented in HttpStateData, ClientHttpRequest, and BodySink.

Referenced by AsyncJob::callException(), and AsyncJob::callStart().

Member Data Documentation

◆ callback_

AsyncCall::Pointer Comm::ConnOpener::callback_

private

Definition at line 71 of file ConnOpener.h.

◆ calls_

struct Comm::ConnOpener::Calls Comm::ConnOpener::calls_

private

◆ conn_

Comm::ConnectionPointer Comm::ConnOpener::conn_

private

Definition at line 70 of file ConnOpener.h.

Referenced by ConnOpener().

◆ deadline_

time_t Comm::ConnOpener::deadline_

private

Definition at line 77 of file ConnOpener.h.

◆ failRetries_

int Comm::ConnOpener::failRetries_

private

Definition at line 74 of file ConnOpener.h.

◆ host_

char* Comm::ConnOpener::host_

private

Definition at line 68 of file ConnOpener.h.

◆ id

const InstanceId<AsyncJob> AsyncJob::id

inherited

Definition at line 73 of file AsyncJob.h.

◆ inCall

AsyncCall::Pointer AsyncJob::inCall

protectedinherited

Definition at line 81 of file AsyncJob.h.

Referenced by AsyncJob::callEnd(), AsyncJob::callStart(), AsyncJob::canBeCalled(), AsyncJob::deleteThis(), and AsyncJob::mustStop().

◆ started_

bool AsyncJob::started_ = false

protectedinherited

Definition at line 83 of file AsyncJob.h.

Referenced by AsyncJob::~AsyncJob(), AsyncJob::callEnd(), and AsyncJob::Start().

◆ stopReason

const char* AsyncJob::stopReason

protectedinherited

Definition at line 79 of file AsyncJob.h.

Referenced by AsyncJob::deleteThis(), AsyncJob::done(), AsyncJob::mustStop(), AsyncJob::status(), and HappyConnOpener::status().

◆ swanSang_

bool AsyncJob::swanSang_ = false

protectedinherited

Definition at line 84 of file AsyncJob.h.

Referenced by AsyncJob::~AsyncJob(), and AsyncJob::callEnd().

◆ temporaryFd_

int Comm::ConnOpener::temporaryFd_

private

Definition at line 69 of file ConnOpener.h.

◆ totalTries_

int Comm::ConnOpener::totalTries_

private

Definition at line 73 of file ConnOpener.h.

◆ typeName

const char* AsyncJob::typeName

protectedinherited

Definition at line 80 of file AsyncJob.h.

Referenced by AsyncJob::AsyncJob(), Adaptation::Icap::Xaction::Xaction(), AsyncJob::~AsyncJob(), AsyncJob::callEnd(), AsyncJob::callStart(), AsyncJob::deleteThis(), and AsyncJob::mustStop().

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

src/comm/ConnOpener.h
src/comm/ConnOpener.cc

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Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Private Member Functions

Static Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ Pointer

Constructor & Destructor Documentation

◆ ConnOpener() [1/2]

◆ ~ConnOpener()

◆ ConnOpener() [2/2]

Member Function Documentation

◆ callEnd()

◆ callException()

◆ callStart()

◆ canBeCalled()

◆ cancelSleep()

◆ CBDATA_CLASS()

◆ cleanFd()

◆ closeFd()

◆ connected()

◆ createFd()

◆ DelayedConnectRetry()

◆ deleteThis()

◆ doConnect()

◆ done()

◆ doneAll()

◆ earlyAbort()

◆ getHost()

◆ handleStopRequest()

◆ InProgressConnectRetry()

◆ keepFd()

◆ lookupLocalAddress()

◆ mustStop()

◆ operator=()

◆ restart()

◆ retrySleep()

◆ sendAnswer()

◆ setHost()

◆ start()

◆ Start()

◆ status()

◆ swanSong()

◆ timeout()

◆ toCbdata()

Member Data Documentation

◆ callback_

◆ calls_

◆ conn_

◆ deadline_

◆ failRetries_

◆ host_

◆ id

◆ inCall

◆ started_

◆ stopReason

◆ swanSang_

◆ temporaryFd_

◆ totalTries_

◆ typeName

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