#include <HTTP2Transport.h>

Inheritance diagram for alexaClientSDK::acl::HTTP2Transport:

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Collaboration diagram for alexaClientSDK::acl::HTTP2Transport:

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Classes
struct	Configuration

Public Member Functions
void	addObserver (std::shared_ptr< TransportObserverInterface > transportObserver)

void	removeObserver (std::shared_ptr< TransportObserverInterface > observer)

std::shared_ptr< avsCommon::utils::http2::HTTP2ConnectionInterface >	getHTTP2Connection ()

TransportInterface methods.
bool	connect () override

void	disconnect () override

bool	isConnected () override

void	onRequestEnqueued () override

void	onWakeConnectionRetry () override

void	onWakeVerifyConnectivity () override

MessageSenderInterface methods.
HTTP2Transport uses sendMessage to handle the post-connect state only.
void	sendMessage (std::shared_ptr< avsCommon::avs::MessageRequest > request) override

PostConnectObserverInterface methods.
void	onPostConnected () override

void	onUnRecoverablePostConnectFailure () override

AuthObserverInterface methods
void	onAuthStateChange (avsCommon::sdkInterfaces::AuthObserverInterface::State newState, avsCommon::sdkInterfaces::AuthObserverInterface::Error error) override

RequiresShutdown methods.
void	doShutdown () override

{ ExchangeHandlerContextInterface methods.
void	onDownchannelConnected () override

void	onDownchannelFinished () override

void	onMessageRequestSent (const std::shared_ptr< avsCommon::avs::MessageRequest > &request) override

void	onMessageRequestTimeout () override

void	onMessageRequestAcknowledged (const std::shared_ptr< avsCommon::avs::MessageRequest > &request) override

void	onMessageRequestFinished () override

void	onPingRequestAcknowledged (bool success) override

void	onPingTimeout () override

void	onActivity () override

void	onForbidden (const std::string &authToken="") override

std::shared_ptr< avsCommon::utils::http2::HTTP2RequestInterface >	createAndSendRequest (const avsCommon::utils::http2::HTTP2RequestConfig &cfg) override

std::string	getAVSGateway () override

HTTP2ConnectionObserverInterface methods.
void	onGoawayReceived () override

Public Member Functions inherited from alexaClientSDK::acl::TransportInterface
	TransportInterface ()

	TransportInterface (const TransportInterface &rhs)=delete

TransportInterface &	operator= (const TransportInterface &rhs)=delete

virtual	~TransportInterface ()=default

Public Member Functions inherited from alexaClientSDK::avsCommon::utils::RequiresShutdown
	RequiresShutdown (const std::string &name)

virtual	~RequiresShutdown ()
	Destructor. More...

const std::string &	name () const

void	shutdown ()

bool	isShutdown () const

Public Member Functions inherited from alexaClientSDK::acl::PostConnectObserverInterface
virtual	~PostConnectObserverInterface ()=default

Public Member Functions inherited from alexaClientSDK::avsCommon::sdkInterfaces::MessageSenderInterface
virtual	~MessageSenderInterface ()=default
	Destructor. More...

virtual void	sendMessage (std::shared_ptr< avs::MessageRequest > request)=0

Public Member Functions inherited from alexaClientSDK::avsCommon::sdkInterfaces::AuthObserverInterface
virtual	~AuthObserverInterface ()=default

Public Member Functions inherited from alexaClientSDK::avsCommon::utils::http2::HTTP2ConnectionObserverInterface
virtual	~HTTP2ConnectionObserverInterface ()=default

Public Member Functions inherited from alexaClientSDK::acl::ExchangeHandlerContextInterface
virtual	~ExchangeHandlerContextInterface ()=default

Static Public Member Functions
static std::shared_ptr< HTTP2Transport >	create (std::shared_ptr< avsCommon::sdkInterfaces::AuthDelegateInterface > authDelegate, const std::string &avsGateway, std::shared_ptr< avsCommon::utils::http2::HTTP2ConnectionInterface > http2Connection, std::shared_ptr< MessageConsumerInterface > messageConsumer, std::shared_ptr< avsCommon::avs::attachment::AttachmentManagerInterface > attachmentManager, std::shared_ptr< TransportObserverInterface > transportObserver, std::shared_ptr< PostConnectFactoryInterface > postConnectFactory, std::shared_ptr< SynchronizedMessageRequestQueue > sharedRequestQueue, Configuration configuration=Configuration(), std::shared_ptr< avsCommon::utils::metrics::MetricRecorderInterface > metricRecorder=nullptr, std::shared_ptr< avsCommon::sdkInterfaces::EventTracerInterface > eventTracer=nullptr)

Friends
std::ostream &	operator<< (std::ostream &stream, HTTP2Transport::State state)

Additional Inherited Members
Public Types inherited from alexaClientSDK::avsCommon::sdkInterfaces::AuthObserverInterface
enum	State { State::UNINITIALIZED, State::REFRESHED, State::EXPIRED, State::UNRECOVERABLE_ERROR }
	The enum State describes the state of authorization. More...

enum	Error { Error::SUCCESS, Error::UNKNOWN_ERROR, Error::AUTHORIZATION_FAILED, Error::UNAUTHORIZED_CLIENT, Error::SERVER_ERROR, Error::INVALID_REQUEST, Error::INVALID_VALUE, Error::AUTHORIZATION_EXPIRED, Error::UNSUPPORTED_GRANT_TYPE, Error::INVALID_CODE_PAIR, Error::AUTHORIZATION_PENDING, Error::SLOW_DOWN, Error::INTERNAL_ERROR, Error::INVALID_CBL_CLIENT_ID }
	The enum Error encodes possible errors which may occur when changing state. More...

Detailed Description

Class to create and manage an HTTP/2 connection to AVS.

Member Function Documentation

◆ addObserver()

void alexaClientSDK::acl::HTTP2Transport::addObserver ( std::shared_ptr< TransportObserverInterface > transportObserver )

Method to add a TransportObserverInterface instance.

Parameters

transportObserver The observer instance to add.

◆ connect()

bool alexaClientSDK::acl::HTTP2Transport::connect ( )

overridevirtual

Initiate a connection to AVS. This function may operate asynchronously, meaning its return value does not imply a successful connection, but that an attempt to connect has been successfully started. This function may not be thread-safe.

Returns: If connection setup was successful.

Implements alexaClientSDK::acl::TransportInterface.

◆ create()

std::shared_ptr< HTTP2Transport > alexaClientSDK::acl::HTTP2Transport::create	(	std::shared_ptr< avsCommon::sdkInterfaces::AuthDelegateInterface >	authDelegate,
		const std::string &	avsGateway,
		std::shared_ptr< avsCommon::utils::http2::HTTP2ConnectionInterface >	http2Connection,
		std::shared_ptr< MessageConsumerInterface >	messageConsumer,
		std::shared_ptr< avsCommon::avs::attachment::AttachmentManagerInterface >	attachmentManager,
		std::shared_ptr< TransportObserverInterface >	transportObserver,
		std::shared_ptr< PostConnectFactoryInterface >	postConnectFactory,
		std::shared_ptr< SynchronizedMessageRequestQueue >	sharedRequestQueue,
		Configuration	configuration = `Configuration()`,
		std::shared_ptr< avsCommon::utils::metrics::MetricRecorderInterface >	metricRecorder = `nullptr`,
		std::shared_ptr< avsCommon::sdkInterfaces::EventTracerInterface >	eventTracer = `nullptr`
	)

static

A function that creates a HTTP2Transport object.

Parameters

authDelegate	The AuthDelegate implementation.
avsGateway	The URL for the AVS gateway of this object.
http2Connection	Instance of HTTP2ConnectionInterface with which to perform HTTP2 operations.
messageConsumer	The MessageConsumerInterface to pass messages to.
attachmentManager	The attachment manager that manages the attachments.
transportObserver	The observer of the new instance of TransportInterface.
postConnectFactory	The object used to create `PostConnectInterface` instances.
sharedRequestQueue	Request queue shared by all instances of HTTPTransportInterface.
configuration	An optional configuration to specify HTTP2/2 connection settings.
metricRecorder	The metric recorder.
eventTracer	The object used to trace events sent to AVS.

Returns: A shared pointer to a HTTP2Transport object.

◆ createAndSendRequest()

std::shared_ptr< HTTP2RequestInterface > alexaClientSDK::acl::HTTP2Transport::createAndSendRequest ( const avsCommon::utils::http2::HTTP2RequestConfig & cfg )

overridevirtual

Create an HTTP2Request for this HTTP2Transport.

Parameters

cfg	The configuration object which defines the request.

Returns: The new instance of HTTP2RequestInterface, or nullptr if the operation failed.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ disconnect()

void alexaClientSDK::acl::HTTP2Transport::disconnect ( )

overridevirtual

Disconnect from AVS. This function may not be thread-safe.

Implements alexaClientSDK::acl::TransportInterface.

◆ doShutdown()

void alexaClientSDK::acl::HTTP2Transport::doShutdown ( )

overridevirtual

Prepares/enables this object to be deleted. This should be the last function called on this object prior to deleting (or resetting) its shared_ptr.

Warning

Attempting to call functions on this object after calling shutdown() can result in undefined behavior.
Neglecting to call shutdown() on this object can result in resource leaks or other undefined behavior.

Implements alexaClientSDK::avsCommon::utils::RequiresShutdown.

◆ getAVSGateway()

std::string alexaClientSDK::acl::HTTP2Transport::getAVSGateway ( )

overridevirtual

Get AVS gateway to send request to.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ getHTTP2Connection()

std::shared_ptr< HTTP2ConnectionInterface > alexaClientSDK::acl::HTTP2Transport::getHTTP2Connection ( )

Get the HTTP2ConnectionInterface instance being used by this HTTP2Transport.

Returns: The HTTP2ConnectionInterface instance being used by this HTTP2Transport.

◆ isConnected()

bool alexaClientSDK::acl::HTTP2Transport::isConnected ( )

overridevirtual

Returns whether this object is currently connected to AVS.

Returns: If the object is currently connected to AVS.

Implements alexaClientSDK::acl::TransportInterface.

◆ onActivity()

void alexaClientSDK::acl::HTTP2Transport::onActivity ( )

overridevirtual

Notification of network activity between this client and AVS. (this is used to detect sustained inactivity requiring the send of a ping).

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onAuthStateChange()

void alexaClientSDK::acl::HTTP2Transport::onAuthStateChange	(	avsCommon::sdkInterfaces::AuthObserverInterface::State	newState,
		avsCommon::sdkInterfaces::AuthObserverInterface::Error	error
	)

overridevirtual

Notification that an authorization state has changed.

Note: Implementations of this method must not call AuthDelegate methods because the AuthDelegate may be in a 'locked' state at the time this call is made.

Parameters

newState	The new state of the authorization token.
error	The error associated to the state change.

Implements alexaClientSDK::avsCommon::sdkInterfaces::AuthObserverInterface.

◆ onDownchannelConnected()

void alexaClientSDK::acl::HTTP2Transport::onDownchannelConnected ( )

overridevirtual

Notification that the downchannel has been established.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onDownchannelFinished()

void alexaClientSDK::acl::HTTP2Transport::onDownchannelFinished ( )

overridevirtual

Notification that the downchannel has failed to be established or has disconnected.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onForbidden()

void alexaClientSDK::acl::HTTP2Transport::onForbidden ( const std::string & authToken = "" )

overridevirtual

Notification that a request received a FORBIDDEN (403) response.

Parameters

authToken The auth token used for the forbidden request or an empty string if the token is not specified.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onGoawayReceived()

void alexaClientSDK::acl::HTTP2Transport::onGoawayReceived ( )

overridevirtual

Notify that a GOAWAY frame has been received.

Implements alexaClientSDK::avsCommon::utils::http2::HTTP2ConnectionObserverInterface.

◆ onMessageRequestAcknowledged()

void alexaClientSDK::acl::HTTP2Transport::onMessageRequestAcknowledged ( const std::shared_ptr< avsCommon::avs::MessageRequest > & request )

overridevirtual

Notification that sending a MessageRequest has failed or been acknowledged by AVS (this is used to indicate it is okay to send the next message).

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onMessageRequestFinished()

void alexaClientSDK::acl::HTTP2Transport::onMessageRequestFinished ( )

overridevirtual

Notification tht a message request has finished it's exchange with AVS.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onMessageRequestSent()

void alexaClientSDK::acl::HTTP2Transport::onMessageRequestSent ( const std::shared_ptr< avsCommon::avs::MessageRequest > & request )

overridevirtual

Notification that an MessageRequest has been sent.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onMessageRequestTimeout()

void alexaClientSDK::acl::HTTP2Transport::onMessageRequestTimeout ( )

overridevirtual

Notification that sending a message request timed out.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onPingRequestAcknowledged()

void alexaClientSDK::acl::HTTP2Transport::onPingRequestAcknowledged ( bool success )

overridevirtual

Notification that sending a ping to AVS has failed or been acknowledged by AVS.

Parameters

success Whether the ping was acknowledged successfully.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onPingTimeout()

void alexaClientSDK::acl::HTTP2Transport::onPingTimeout ( )

overridevirtual

Notification that a ping request timed out.

Implements alexaClientSDK::acl::ExchangeHandlerContextInterface.

◆ onPostConnected()

void alexaClientSDK::acl::HTTP2Transport::onPostConnected ( )

overridevirtual

Implements alexaClientSDK::acl::PostConnectObserverInterface.

◆ onRequestEnqueued()

void alexaClientSDK::acl::HTTP2Transport::onRequestEnqueued ( )

overridevirtual

A message request has been added to the shared synchronized queue and is ready to be read.

Implements alexaClientSDK::acl::TransportInterface.

◆ onUnRecoverablePostConnectFailure()

void alexaClientSDK::acl::HTTP2Transport::onUnRecoverablePostConnectFailure ( )

overridevirtual

Called when a PostConnect object failed to complete the post-connect processing.

Implements alexaClientSDK::acl::PostConnectObserverInterface.

◆ onWakeConnectionRetry()

void alexaClientSDK::acl::HTTP2Transport::onWakeConnectionRetry ( )

overridevirtual

This method is a hint to retry connecting (if not connected).

Implements alexaClientSDK::acl::TransportInterface.

◆ onWakeVerifyConnectivity()

void alexaClientSDK::acl::HTTP2Transport::onWakeVerifyConnectivity ( )

overridevirtual

This method is a hint to verify that there is a valid connection ot AVS.

Implements alexaClientSDK::acl::TransportInterface.

◆ removeObserver()

void alexaClientSDK::acl::HTTP2Transport::removeObserver ( std::shared_ptr< TransportObserverInterface > observer )

Method to remove a TransportObserverInterface instance.

Parameters

observer The observer instance to remove.

◆ sendMessage()

void alexaClientSDK::acl::HTTP2Transport::sendMessage ( std::shared_ptr< avsCommon::avs::MessageRequest > request )

override

Friends And Related Function Documentation

◆ operator<<

std::ostream& operator<<	(	std::ostream &	stream,
		HTTP2Transport::State	state
	)

friend

Write a HTTP2Transport::State value to an ostream as a string.

Parameters

stream	The stream to write the value to.
state	The state to write to the `ostream` as a string.

Returns: The ostream that was passed in and written to.

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

/home/ANT.AMAZON.COM/womw/workspace/alexaClientSDK/release/avs-device-sdk/ACL/include/ACL/Transport/HTTP2Transport.h
/home/ANT.AMAZON.COM/womw/workspace/alexaClientSDK/release/avs-device-sdk/ACL/src/Transport/HTTP2Transport.cpp

Classes

Public Member Functions

Static Public Member Functions

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ addObserver()

◆ connect()

◆ create()

◆ createAndSendRequest()

◆ disconnect()

◆ doShutdown()

◆ getAVSGateway()

◆ getHTTP2Connection()

◆ isConnected()

◆ onActivity()

◆ onAuthStateChange()

◆ onDownchannelConnected()

◆ onDownchannelFinished()

◆ onForbidden()

◆ onGoawayReceived()

◆ onMessageRequestAcknowledged()

◆ onMessageRequestFinished()

◆ onMessageRequestSent()

◆ onMessageRequestTimeout()

◆ onPingRequestAcknowledged()

◆ onPingTimeout()

◆ onPostConnected()

◆ onRequestEnqueued()

◆ onUnRecoverablePostConnectFailure()

◆ onWakeConnectionRetry()

◆ onWakeVerifyConnectivity()

◆ removeObserver()

◆ sendMessage()

Friends And Related Function Documentation

◆ operator<<