#include <HttpTunneler.h>

Inheritance diagram for Http::Tunneler:

Collaboration diagram for Http::Tunneler:

[legend]

Classes
class	CbDialer
	Callback dialer API to allow Tunneler to set the answer. More...

Public Types
typedef CbcPointer< AsyncJob >	Pointer

Public Member Functions
	Tunneler (const Comm::ConnectionPointer &conn, const HttpRequestPointer &req, AsyncCall::Pointer &aCallback, time_t timeout, const AccessLogEntryPointer &alp)

	Tunneler (const Tunneler &)=delete

Tunneler &	operator= (const Tunneler &)=delete

void	setDelayId (DelayId delay_id)

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
bool	noteFwdPconnUse
	hack: whether the connection requires fwdPconnPool->noteUses() More...

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

Protected Member Functions
virtual	~Tunneler ()

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

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

virtual void	swanSong ()

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

void	handleConnectionClosure (const CommCloseCbParams &)

void	watchForClosures ()
	make sure we quit if/when the connection is gone More...

void	handleTimeout (const CommTimeoutCbParams &)
	The connection read timeout callback handler. More...

void	startReadingResponse ()

void	writeRequest ()

void	handleWrittenRequest (const CommIoCbParams &)
	Called when we are done writing a CONNECT request header to a peer. More...

void	handleReadyRead (const CommIoCbParams &)
	Called when we read [a part of] CONNECT response from the peer. More...

void	readMore ()

void	handleResponse (const bool eof)
	Parses [possibly incomplete] CONNECT response and reacts to it. More...

void	bailOnResponseError (const char error, HttpReply )

void	deleteThis (const char *aReason)

void	mustStop (const char *aReason)

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

void	bailWith (ErrorState *)
	sends the given error to the initiator More...

void	sendSuccess ()
	sends the ready-to-use tunnel to the initiator More...

void	callBack ()
	a bailWith(), sendSuccess() helper: sends results to the initiator More...

void	disconnect ()
	stops monitoring the connection More...

void	countFailingConnection ()
	updates connection usage history before the connection is closed More...

TunnelerAnswer &	answer ()
	convenience method to get to the answer fields More...

Private Attributes
AsyncCall::Pointer	writer
	called when the request has been written More...

AsyncCall::Pointer	reader
	called when the response should be read More...

AsyncCall::Pointer	closer
	called when the connection is being closed More...

Comm::ConnectionPointer	connection
	TCP connection to the cache_peer. More...

HttpRequestPointer	request
	peer connection trigger or cause More...

AsyncCall::Pointer	callback
	we call this with the results More...

SBuf	url
	request-target for the CONNECT request More...

time_t	lifetimeLimit
	do not run longer than this More...

AccessLogEntryPointer	al
	info for the future access.log entry More...

DelayId	delayId

SBuf	readBuf

Http1::ResponseParserPointer	hp
	Parser being used at present to parse the HTTP peer response. More...

const time_t	startTime
	when the tunnel establishment started More...

bool	requestWritten
	whether we successfully wrote the request More...

bool	tunnelEstablished
	whether we got a 200 OK response More...

Detailed Description

Negotiates an HTTP CONNECT tunnel through a forward proxy using a given (open and, if needed, encrypted) TCP connection to that proxy. Owns the connection during these negotiations. The caller receives TunnelerAnswer.

Definition at line 32 of file HttpTunneler.h.

Member Typedef Documentation

◆ Pointer

typedef CbcPointer<AsyncJob> AsyncJob::Pointer

inherited

Definition at line 34 of file AsyncJob.h.

Constructor & Destructor Documentation

◆ Tunneler() [1/2]

Http::Tunneler::Tunneler	(	const Comm::ConnectionPointer &	conn,
		const HttpRequestPointer &	req,
		AsyncCall::Pointer &	aCallback,
		time_t	timeout,
		const AccessLogEntryPointer &	alp
	)

Definition at line 29 of file HttpTunneler.cc.

References assert, AnyP::Uri::authority(), callback, connection, debugs, AsyncCall::getDialer(), request, url, HttpRequest::url, and watchForClosures().

◆ Tunneler() [2/2]

Http::Tunneler::Tunneler ( const Tunneler & )

delete

◆ ~Tunneler()

Http::Tunneler::~Tunneler ( )

protectedvirtual

Definition at line 51 of file HttpTunneler.cc.

References debugs.

Member Function Documentation

◆ answer()

Http::TunnelerAnswer & Http::Tunneler::answer ( )

private

Definition at line 64 of file HttpTunneler.cc.

References Must.

◆ bailOnResponseError()

void Http::Tunneler::bailOnResponseError	(	const char *	error,
		HttpReply *	errorReply
	)

protected

Definition at line 349 of file HttpTunneler.cc.

References debugs, ERR_CONNECT_FAIL, error(), request(), and Http::scBadGateway.

◆ bailWith()

void Http::Tunneler::bailWith ( ErrorState * error )

private

Definition at line 364 of file HttpTunneler.cc.

References error(), and Must.

◆ callBack()

void Http::Tunneler::callBack ( )

private

Definition at line 423 of file HttpTunneler.cc.

References assert, conn, debugs, and ScheduleCallHere.

◆ 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(), AsyncJob::inCall, 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 ConnStateData, ClientHttpRequest, Adaptation::Icap::ModXact, Adaptation::Icap::ServiceRep, Adaptation::Icap::Xaction, Ipc::Forwarder, Ipc::Inquirer, and Ftp::Server.

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, and AsyncJob::inCall.

◆ CBDATA_CLASS()

Http::Tunneler::CBDATA_CLASS ( Tunneler )

private

◆ countFailingConnection()

void Http::Tunneler::countFailingConnection ( )

private

Definition at line 390 of file HttpTunneler.cc.

References assert, fd_table, fwdPconnPool, PconnPool::noteUses(), and peerConnectFailed().

◆ deleteThis()

void AsyncJob::deleteThis ( const char * aReason )

protectedinherited

Definition at line 50 of file AsyncJob.cc.

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

Referenced by ConnStateData::connStateClosed(), and AsyncJob::deleteThis().

◆ disconnect()

void Http::Tunneler::disconnect ( )

private

Definition at line 400 of file HttpTunneler.cc.

References comm_remove_close_handler(), commUnsetConnTimeout(), Comm::IsConnOpen(), and Comm::ReadCancel().

◆ done()

bool AsyncJob::done ( ) const

protectedinherited

Definition at line 91 of file AsyncJob.cc.

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

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

◆ doneAll()

bool Http::Tunneler::doneAll ( ) const

protectedvirtual

Reimplemented from AsyncJob.

Definition at line 57 of file HttpTunneler.cc.

◆ handleConnectionClosure()

void Http::Tunneler::handleConnectionClosure ( const CommCloseCbParams & )

protected

Definition at line 102 of file HttpTunneler.cc.

References ERR_CONNECT_FAIL, request(), and Http::scBadGateway.

Referenced by watchForClosures().

◆ handleReadyRead()

void Http::Tunneler::handleReadyRead ( const CommIoCbParams & io )

protected

Definition at line 214 of file HttpTunneler.cc.

References StatCounters::all, assert, CommCommonCbParams::conn, Comm::ENDFILE, Comm::ERR_CLOSING, ERR_READ_ERROR, error(), CommCommonCbParams::flag, Comm::INPROGRESS, StatCounters::kbytes_in, Must, Comm::OK, StatCounters::other, Comm::ReadNow(), request(), Http::scBadGateway, StatCounters::server, CommIoCbParams::size, statCounter, and CommCommonCbParams::xerrno.

Referenced by readMore().

◆ handleResponse()

void Http::Tunneler::handleResponse ( const bool eof )

protected

Definition at line 287 of file HttpTunneler.cc.

References debugs, Raw::gap(), RefCount< C >::getRaw(), Http::Message::hdr_sz, Raw::minLevel(), Http::One::ResponseParser::parse(), HttpReply::parseHeader(), request(), Http::scOkay, Http::StatusLine::set(), HttpReply::sline, Http::Message::sources, Http::Message::srcHttp, and Http::StatusLine::status().

◆ handleStopRequest()

void AsyncJob::handleStopRequest ( )

inlineinherited

Definition at line 71 of file AsyncJob.h.

References AsyncJob::mustStop().

◆ handleTimeout()

void Http::Tunneler::handleTimeout ( const CommTimeoutCbParams & )

protected

Definition at line 130 of file HttpTunneler.cc.

References ERR_CONNECT_FAIL, request(), and Http::scGatewayTimeout.

Referenced by readMore().

◆ handleWrittenRequest()

void Http::Tunneler::handleWrittenRequest ( const CommIoCbParams & io )

protected

Definition at line 189 of file HttpTunneler.cc.

References StatCounters::all, debugs, Comm::ERR_CLOSING, ERR_WRITE_ERROR, error(), CommCommonCbParams::flag, StatCounters::kbytes_out, Must, Comm::OK, StatCounters::other, request(), Http::scBadGateway, StatCounters::server, CommIoCbParams::size, statCounter, and CommCommonCbParams::xerrno.

Referenced by writeRequest().

◆ mustStop()

void AsyncJob::mustStop ( const char * aReason )

protectedinherited

◆ operator=()

Tunneler & Http::Tunneler::operator= ( const Tunneler & )

delete

◆ readMore()

void Http::Tunneler::readMore ( )

protected

Definition at line 267 of file HttpTunneler.cc.

References commSetConnTimeout(), fd_table, handleReadyRead(), handleTimeout(), Comm::IsConnOpen(), JobCallback, Comm::MortalReadTimeout(), Must, Store::nil, and Comm::Read().

◆ sendSuccess()

void Http::Tunneler::sendSuccess ( )

private

Definition at line 380 of file HttpTunneler.cc.

References assert, and Comm::IsConnOpen().

◆ setDelayId()

void Http::Tunneler::setDelayId ( DelayId delay_id )

inline

Definition at line 65 of file HttpTunneler.h.

References delayId.

◆ start()

void Http::Tunneler::start ( )

protectedvirtual

Reimplemented from AsyncJob.

Definition at line 73 of file HttpTunneler.cc.

References assert, ERR_CONNECT_FAIL, fd_table, Comm::IsConnOpen(), Must, request(), Http::scBadGateway, Http::scInternalServerError, and AsyncJob::start().

◆ 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().

◆ startReadingResponse()

void Http::Tunneler::startReadingResponse ( )

protected

Definition at line 136 of file HttpTunneler.cc.

References debugs.

◆ status()

const char * Http::Tunneler::status ( ) const

protectedvirtual

for debugging, starts with space

Reimplemented from AsyncJob.

Definition at line 449 of file HttpTunneler.cc.

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

◆ swanSong()

void Http::Tunneler::swanSong ( )

protectedvirtual

Reimplemented from AsyncJob.

Definition at line 433 of file HttpTunneler.cc.

References assert, ERR_GATEWAY_FAILURE, Comm::IsConnOpen(), request(), Http::scInternalServerError, and AsyncJob::swanSong().

◆ toCbdata()

virtual void * CbdataParent::toCbdata ( )

pure virtualinherited

Implemented in BodySink, ClientHttpRequest, and HttpStateData.

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

◆ watchForClosures()

void Http::Tunneler::watchForClosures ( )

protected

Definition at line 115 of file HttpTunneler.cc.

References comm_add_close_handler(), debugs, fd_table, handleConnectionClosure(), Comm::IsConnOpen(), JobCallback, and Must.

Referenced by Tunneler().

◆ writeRequest()

void Http::Tunneler::writeRequest ( )

protected

Definition at line 145 of file HttpTunneler.cc.

References MemBuf::append(), Packable::appendf(), MemBuf::buf, HttpHeader::clean(), debugs, fd_note(), handleWrittenRequest(), hoRequest, HttpStateData::httpBuildRequestHeader(), MemBuf::init(), JobCallback, HttpHeader::packInto(), Http::StateFlags::peering, request(), and Comm::Write().

Member Data Documentation

◆ al

AccessLogEntryPointer Http::Tunneler::al

private

Definition at line 117 of file HttpTunneler.h.

◆ callback

AsyncCall::Pointer Http::Tunneler::callback

private

Definition at line 114 of file HttpTunneler.h.

Referenced by Tunneler().

◆ closer

AsyncCall::Pointer Http::Tunneler::closer

private

Definition at line 110 of file HttpTunneler.h.

◆ connection

Comm::ConnectionPointer Http::Tunneler::connection

private

Definition at line 112 of file HttpTunneler.h.

Referenced by Tunneler().

◆ delayId

DelayId Http::Tunneler::delayId

private

Definition at line 119 of file HttpTunneler.h.

Referenced by setDelayId().

◆ hp

Http1::ResponseParserPointer Http::Tunneler::hp

private

Definition at line 124 of file HttpTunneler.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().

◆ lifetimeLimit

time_t Http::Tunneler::lifetimeLimit

private

Definition at line 116 of file HttpTunneler.h.

◆ noteFwdPconnUse

bool Http::Tunneler::noteFwdPconnUse

Definition at line 69 of file HttpTunneler.h.

◆ readBuf

SBuf Http::Tunneler::readBuf

private

either unparsed response or post-response bytes

Definition at line 122 of file HttpTunneler.h.

◆ reader

AsyncCall::Pointer Http::Tunneler::reader

private

Definition at line 109 of file HttpTunneler.h.

◆ request

HttpRequestPointer Http::Tunneler::request

private

Definition at line 113 of file HttpTunneler.h.

Referenced by Tunneler().

◆ requestWritten

bool Http::Tunneler::requestWritten

private

Definition at line 128 of file HttpTunneler.h.

◆ started_

bool AsyncJob::started_ = false

protectedinherited

Definition at line 83 of file AsyncJob.h.

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

◆ startTime

const time_t Http::Tunneler::startTime

private

Definition at line 126 of file HttpTunneler.h.

◆ 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().

◆ tunnelEstablished

bool Http::Tunneler::tunnelEstablished

private

Definition at line 129 of file HttpTunneler.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().

◆ url

SBuf Http::Tunneler::url

private

Definition at line 115 of file HttpTunneler.h.

Referenced by Tunneler().

◆ writer

AsyncCall::Pointer Http::Tunneler::writer

private

Definition at line 108 of file HttpTunneler.h.

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

src/clients/HttpTunneler.h
src/clients/HttpTunneler.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

Private Attributes

Detailed Description

Member Typedef Documentation

◆ Pointer

Constructor & Destructor Documentation

◆ Tunneler() [1/2]

◆ Tunneler() [2/2]

◆ ~Tunneler()

Member Function Documentation

◆ answer()

◆ bailOnResponseError()

◆ bailWith()

◆ callBack()

◆ callEnd()

◆ callException()

◆ callStart()

◆ canBeCalled()

◆ CBDATA_CLASS()

◆ countFailingConnection()

◆ deleteThis()

◆ disconnect()

◆ done()

◆ doneAll()

◆ handleConnectionClosure()

◆ handleReadyRead()

◆ handleResponse()

◆ handleStopRequest()

◆ handleTimeout()

◆ handleWrittenRequest()

◆ mustStop()

◆ operator=()

◆ readMore()

◆ sendSuccess()

◆ setDelayId()

◆ start()

◆ Start()

◆ startReadingResponse()

◆ status()

◆ swanSong()

◆ toCbdata()

◆ watchForClosures()

◆ writeRequest()

Member Data Documentation

◆ al

◆ callback

◆ closer

◆ connection

◆ delayId

◆ hp

◆ id

◆ inCall

◆ lifetimeLimit

◆ noteFwdPconnUse

◆ readBuf

◆ reader

◆ request

◆ requestWritten

◆ started_

◆ startTime

◆ stopReason

◆ swanSang_

◆ tunnelEstablished

◆ typeName

◆ url

◆ writer

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Documentation

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