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# TAO_ECG_UDP_Receiver Class Reference

Receive events from UDP or Multicast and push them to a "local" EC. NOT THREAD-SAFE. More...

`#include <ECG_UDP_Receiver.h>`

Inheritance diagram for TAO_ECG_UDP_Receiver:

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Collaboration diagram for TAO_ECG_UDP_Receiver:

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List of all members.

## [NOHEADER]

| ~TAO_ECG_UDP_Receiver (void)
void | init (RtecEventChannelAdmin::EventChannel_ptr lcl_ec, TAO_ECG_Refcounted_Endpoint ignore_from, RtecUDPAdmin::AddrServer_ptr addr_server ACE_ENV_ARG_DECL)
void | connect (const RtecEventChannelAdmin::SupplierQOS &pub ACE_ENV_ARG_DECL)
| Connect or reconnect to the EC with the given publications.
void | set_handler_shutdown (TAO_ECG_Refcounted_Handler handler_shutdown_rptr)
void | shutdown (ACE_ENV_SINGLE_ARG_DECL)
TAO_EC_Servant_Var< TAO_ECG_UDP_Receiver > | create (CORBA::Boolean perform_crc=0)

## Public Methods

void | get_addr (const RtecEventComm::EventHeader &header, RtecUDPAdmin::UDP_Addr_out addr ACE_ENV_ARG_DECL)
virtual void | disconnect_push_supplier (ACE_ENV_SINGLE_ARG_DECL) throw (CORBA::SystemException)
virtual int | handle_input (ACE_SOCK_Dgram &dgram)
| TAO_ECG_Dgram_Handler method.

## Protected Methods

| TAO_ECG_UDP_Receiver (CORBA::Boolean perform_crc=0)

## Private Types

typedef TAO_EC_Auto_Command< TAO_ECG_UDP_Receiver_Disconnect_Command > | ECG_Receiver_Auto_Proxy_Disconnect

## Private Methods

void | new_connect (const RtecEventChannelAdmin::SupplierQOS &pub ACE_ENV_ARG_DECL)
void | reconnect (const RtecEventChannelAdmin::SupplierQOS &pub ACE_ENV_ARG_DECL)

## Private Attributes

RtecEventChannelAdmin::EventChannel_var | lcl_ec_
| Event Channel to which we act as a supplier.
RtecUDPAdmin::AddrServer_var | addr_server_
| The server used to map event types to multicast groups.
RtecEventChannelAdmin::ProxyPushConsumer_var | consumer_proxy_
| Proxy used to supply events to the Event Channel.
TAO_ECG_CDR_Message_Receiver | cdr_receiver_
TAO_ECG_Refcounted_Handler | handler_rptr_
ECG_Receiver_Auto_Proxy_Disconnect | auto_proxy_disconnect_
| Manages our connection to Consumer Proxy.

## Detailed Description

Receive events from UDP or Multicast and push them to a "local" EC. NOT THREAD-SAFE.

This class connects as a supplier to an EventChannel, and supplies to it all events it receives via UDP or Multicast.

## Member Typedef Documentation

typedef TAO_EC_Auto_Command<TAO_ECG_UDP_Receiver_Disconnect_Command> TAO_ECG_UDP_Receiver::ECG_Receiver_Auto_Proxy_Disconnect`[private]`

## Constructor & Destructor Documentation

TAO_ECG_UDP_Receiver::~TAO_ECG_UDP_Receiver | ( | void |  | ) |

ACE_INLINE TAO_ECG_UDP_Receiver::TAO_ECG_UDP_Receiver | ( | CORBA::Boolean | perform_crc = 0 | ) | `[protected]`

| Constructor (protected). Clients can create new TAO_ECG_UDP_Receiver objects using the static create() method.

## Member Function Documentation

void TAO_ECG_UDP_Receiver::connect | ( | const RtecEventChannelAdmin::SupplierQOS &pub | ACE_ENV_ARG_DECL | ) |

| Connect or reconnect to the EC with the given publications. NOTE: if we are already connected to EC and a reconnection is necessary, the EC must have reconnects enabled in order for this method to succeed.

ACE_INLINE TAO_EC_Servant_Var< TAO_ECG_UDP_Receiver > TAO_ECG_UDP_Receiver::create | ( | CORBA::Boolean | perform_crc = 0 | ) | `[static]`

| Create a new TAO_ECG_UDP_Receiver object. (Constructor access is restricted to insure that all TAO_ECG_UDP_Receiver objects are heap-allocated.)

void TAO_ECG_UDP_Receiver::disconnect_push_supplier | ( | ACE_ENV_SINGLE_ARG_DECL |  | ) | throw (CORBA::SystemException)`[virtual]`

| The PushSupplier idl method. Invokes shutdown (), which may result in the object being deleted, if refcounting is used to manage its lifetime.

ACE_INLINE void TAO_ECG_UDP_Receiver::get_addr | ( | const RtecEventComm::EventHeader & | header,
|  | RtecUDPAdmin::UDP_Addr_out addr | ACE_ENV_ARG_DECL
| ) | `[virtual]`

| Accessor. Call the RtecUDPAdmin::AddrServer::get_addr. Throws exception if nill Address Server was specified in init (). Implements TAO_ECG_Dgram_Handler.

int TAO_ECG_UDP_Receiver::handle_input | ( | ACE_SOCK_Dgram & | dgram | ) | `[virtual]`

| TAO_ECG_Dgram_Handler method. UDP/Multicast Event_Handlers call this method when data is available at the socket - the <dgram> is ready for reading. Data is read from the socket, and, if complete message is received, the event is pushed to the local Event Channel. Implements TAO_ECG_Dgram_Handler.

void TAO_ECG_UDP_Receiver::init | ( | RtecEventChannelAdmin::EventChannel_ptr | lcl_ec,
|  | TAO_ECG_Refcounted_Endpoint | ignore_from,
|  | RtecUDPAdmin::AddrServer_ptr addr_server | ACE_ENV_ARG_DECL
| ) |

Parameters:

  lcl_ec | Event Channel to which we will act as a supplier of events.
  ignore_from | Endpoint used to remove events generated by the same process.

  addr_server

  Address server used to obtain mapping of event type to multicast group. To insure proper resource clean up, if init () is successful, shutdown () must be called when the receiver is no longer needed. This is done by disconnect_push_supplier() method. If disconnect_push_supplier() will not be called, it is the responsibility of the user. Furthermore, if shutdown() is not explicitly called by either disconnect_push_supplier () or the user, the receiver will clean up the resources in its destructor, however, certain entities involved in cleanup must still exist at that point, e.g., POA.

void TAO_ECG_UDP_Receiver::new_connect | ( | const RtecEventChannelAdmin::SupplierQOS &pub | ACE_ENV_ARG_DECL | ) | `[private]`

void TAO_ECG_UDP_Receiver::reconnect | ( | const RtecEventChannelAdmin::SupplierQOS &pub | ACE_ENV_ARG_DECL | ) | `[private]`

ACE_INLINE void TAO_ECG_UDP_Receiver::set_handler_shutdown | ( | TAO_ECG_Refcounted_Handler | handler_shutdown_rptr | ) |

| Set the handler we must notify when shutdown occurs. (This is the handler that alerts us when data is available on udp/mcast socket.) Shutdown notification gives the handler an opportunity to properly clean up resources.

void TAO_ECG_UDP_Receiver::shutdown | ( | ACE_ENV_SINGLE_ARG_DECL |  | ) |

| If this class is used with refcounting, calling this method may result in decrementing of the reference count (due to deactivation) and deletion of the object.

## Member Data Documentation

RtecUDPAdmin::AddrServer_var TAO_ECG_UDP_Receiver::addr_server_`[private]`

| The server used to map event types to multicast groups.

ECG_Receiver_Auto_Proxy_Disconnect TAO_ECG_UDP_Receiver::auto_proxy_disconnect_`[private]`

| Manages our connection to Consumer Proxy.

TAO_ECG_CDR_Message_Receiver TAO_ECG_UDP_Receiver::cdr_receiver_`[private]`

| Helper for reading incoming UDP/Multicast messages. It assembles message fragments and provides access to a cdr stream once the complete message has been received.

RtecEventChannelAdmin::ProxyPushConsumer_var TAO_ECG_UDP_Receiver::consumer_proxy_`[private]`

| Proxy used to supply events to the Event Channel.

TAO_ECG_Refcounted_Handler TAO_ECG_UDP_Receiver::handler_rptr_`[private]`

RtecEventChannelAdmin::EventChannel_var TAO_ECG_UDP_Receiver::lcl_ec_`[private]`

| Event Channel to which we act as a supplier.

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

- ECG_UDP_Receiver.h
- ECG_UDP_Receiver.cpp
- ECG_UDP_Receiver.i