Handles transportation of messages. More...

Files
file	TransportTypes.hh
	Forward declarations for transport.

Classes
class	gazebo::transport::CallbackHelper
	A helper class to handle callbacks when messages arrive. More...
class	gazebo::transport::CallbackHelperT< M >
	Callback helper Template. More...
class	gazebo::transport::Connection
	Single TCP/IP connection manager. More...
class	gazebo::transport::ConnectionManager
	Manager of connections. More...
class	gazebo::transport::IOManager
	Manages boost::asio IO. More...
class	gazebo::transport::Node
	A node can advertise and subscribe topics, publish on advertised topics and listen to subscribed topics. More...
class	gazebo::transport::Publication
	A publication for a topic. More...
class	gazebo::transport::PublicationTransport
	transport/transport.hh More...
class	gazebo::transport::Publisher
	A publisher of messages on a topic. More...
class	gazebo::transport::RawCallbackHelper
	Used to connect publishers to subscribers, where the subscriber wants the raw data from the publisher. More...
class	gazebo::transport::SubscribeOptions
	Options for a subscription. More...
class	gazebo::transport::Subscriber
	A subscriber to a topic. More...
class	gazebo::transport::SubscriptionTransport
	transport/transport.hh More...
class	gazebo::transport::TopicManager
	Manages topics and their subscriptions. More...

Typedefs
typedef boost::shared_ptr < CallbackHelper >	gazebo::transport::CallbackHelperPtr
	boost shared pointer to transport::CallbackHelper

Functions
void	gazebo::transport::clear_buffers ()
	Clear any remaining communication buffers.
void	gazebo::transport::fini ()
	Cleanup the transport component.
bool	gazebo::transport::get_master_uri (std::string &_master_host, unsigned int &_master_port)
	Get the hostname and port of the master from the GAZEBO_MASTER_URI environment variable.
void	gazebo::transport::get_topic_namespaces (std::list< std::string > &_namespaces)
	Return all the namespace (world names) on the master.
std::map< std::string, std::list< std::string > >	gazebo::transport::getAdvertisedTopics ()
	Get a list of all the topics and their message types.
std::list< std::string >	gazebo::transport::getAdvertisedTopics (const std::string &_msgType)
	Get a list of all the unique advertised topic names.
bool	gazebo::transport::getMinimalComms ()
	Get whether minimal comms has been enabled.
std::string	gazebo::transport::getTopicMsgType (const std::string &_topicName)
	Get the message typename that is published on the given topic.
bool	gazebo::transport::init (const std::string &_master_host="", unsigned int _master_port=0)
	Initialize the transport system.
bool	gazebo::transport::is_stopped ()
	Is the transport system stopped?
void	gazebo::transport::pause_incoming (bool _pause)
	Pause or unpause incoming messages.
template<typename M >
void	gazebo::transport::publish (const std::string &_topic, const google::protobuf::Message &_message)
	A convenience function for a one-time publication of a message.
boost::shared_ptr< msgs::Response >	gazebo::transport::request (const std::string &_worldName, const std::string &_request, const std::string &_data="")
	Send a request and receive a response.
void	gazebo::transport::requestNoReply (const std::string &_worldName, const std::string &_request, const std::string &_data="")
	Send a request and don't wait for a response.
void	gazebo::transport::requestNoReply (NodePtr _node, const std::string &_request, const std::string &_data="")
	Send a request and don't wait for a response.
void	gazebo::transport::run ()
	Run the transport component.
void	gazebo::transport::setMinimalComms (bool _enabled)
	Set whether minimal comms should be used.
void	gazebo::transport::stop ()
	Stop the transport component from running.

Detailed Description

Handles transportation of messages.

Remarks

Environment Variables:

GAZEBO_IP_WHITE_LIST: Comma separated list of valid IPs. Leave this empty to accept connections from all addresses.
GAZEBO_IP: IP address to export. This will override the default IP lookup.
GAZEBO_HOSTNAME: Hostame to export. Setting this will override both GAZEBO_IP and the default IP lookup.

Typedef Documentation

typedef boost::shared_ptr<CallbackHelper> gazebo::transport::CallbackHelperPtr

boost shared pointer to transport::CallbackHelper

Function Documentation

void gazebo::transport::clear_buffers ( )

Clear any remaining communication buffers.

void gazebo::transport::fini ( )

Cleanup the transport component.

bool gazebo::transport::get_master_uri	(	std::string &	_master_host,
		unsigned int &	_master_port
	)

Get the hostname and port of the master from the GAZEBO_MASTER_URI environment variable.

Parameters

[out]	_master_host	The hostname of the master is set to this param
[out]	_master_port	The port of the master is set to this param

Returns: true if GAZEBO_MASTER_URI was successfully parsed; false otherwise (in which case output params are not set)

void gazebo::transport::get_topic_namespaces ( std::list< std::string > & _namespaces )

Return all the namespace (world names) on the master.

Parameters

[out] _namespaces The list of namespace will be written here

std::map<std::string, std::list<std::string> > gazebo::transport::getAdvertisedTopics ( )

Get a list of all the topics and their message types.

Returns: A map where keys are message types, and values are a list of topic names.

std::list<std::string> gazebo::transport::getAdvertisedTopics ( const std::string & _msgType )

Get a list of all the unique advertised topic names.

Parameters

[in] _msgType Type of message to filter the result on. If empty, then a list of all the topics is returned.

Returns: A list of the advertised topics that publish messages of the type specified by _msgType.

bool gazebo::transport::getMinimalComms ( )

Get whether minimal comms has been enabled.

Returns: True if minimal comms is enabled.

std::string gazebo::transport::getTopicMsgType ( const std::string & _topicName )

Get the message typename that is published on the given topic.

Parameters

[in] _topicName Name of the topic to query.

Returns: The message type, or empty string if the topic is not valid.

bool gazebo::transport::init	(	const std::string &	_master_host = `""`,
		unsigned int	_master_port = `0`
	)

Initialize the transport system.

Parameters

[in]	_master_host	The hostname or IP of the master. Leave empty to use pull address from the GAZEBO_MASTER_URI env var.
[in]	_master_port	The port of the master. Leave empty to use pull address from the GAZEBO_MASTER_URI env var.

Returns: true if initialization succeeded; false otherwise

bool gazebo::transport::is_stopped ( )

Is the transport system stopped?

Returns: true if the transport system is stopped; false otherwise

void gazebo::transport::pause_incoming ( bool _pause )

Pause or unpause incoming messages.

When paused, messages are queued for later delivery

Parameters

[in] _pause If true, pause; otherwise unpause

template<typename M >

void gazebo::transport::publish	(	const std::string &	_topic,
		const google::protobuf::Message &	_message
	)

A convenience function for a one-time publication of a message.

This is inefficient, compared to Node::Advertise followed by Publisher::Publish. This function should only be used when sending a message very infrequently.

Parameters

[in]	_topic	The topic to advertise
[in]	_message	Message to be published

boost::shared_ptr<msgs::Response> gazebo::transport::request	(	const std::string &	_worldName,
		const std::string &	_request,
		const std::string &	_data = `""`
	)

Send a request and receive a response.

This call will block until a response is received.

Parameters

[in]	_worldName	The name of the world to which the request should be sent
[in]	_request	The type request.
[in]	_data	Optional data string.

Returns: The response to the request. Can be empty.

void gazebo::transport::requestNoReply	(	const std::string &	_worldName,
		const std::string &	_request,
		const std::string &	_data = `""`
	)

Send a request and don't wait for a response.

This is non-blocking.

Parameters

[in]	_worldName	The name of the world to which the request should be sent.
[in]	_request	The type request.
[in]	_data	Optional data string.

void gazebo::transport::requestNoReply	(	NodePtr	_node,
		const std::string &	_request,
		const std::string &	_data = `""`
	)

Send a request and don't wait for a response.

This is non-blocking.

Parameters

[in]	_node	Pointer to a node that provides communication.
[in]	_request	The type request.
[in]	_data	Optional data string.

void gazebo::transport::run ( )

Run the transport component.

Creates a thread to handle message passing. This call will block until the master can be contacted or until a retry limit is reached

void gazebo::transport::setMinimalComms ( bool _enabled )

Set whether minimal comms should be used.

This will be used to reduce network traffic.

void gazebo::transport::stop ( )

Stop the transport component from running.

Files

Classes

Typedefs

Functions

Detailed Description

Typedef Documentation

Function Documentation