ECG_UDP_Receiver.h File Reference

#include "orbsvcs/RtecUDPAdminS.h"
#include "orbsvcs/RtecEventChannelAdminS.h"
#include "orbsvcs/Event/ECG_Adapters.h"
#include "orbsvcs/Event/EC_Lifetime_Utils.h"
#include "orbsvcs/Event/EC_Lifetime_Utils_T.h"
#include "orbsvcs/Event/ECG_CDR_Message_Receiver.h"
#include "orbsvcs/Event/ECG_UDP_Receiver.inl"

Include dependency graph for ECG_UDP_Receiver.h:

This graph shows which files directly or indirectly include this file:


class  TAO_ECG_UDP_Receiver_Disconnect_Command
 Disconnects supplier represented by proxy from the Event Channel. More...
class  TAO_ECG_UDP_Receiver
 Receive events from UDP or Multicast and push them to a "local" EC. NOT THREAD-SAFE. More...

Detailed Description

ECG_UDP_Receiver.h 73791 2006-07-27 20:54:56Z wotte

Carlos O'Ryan (

Marina Spivak (

Based on previous work by Tim Harrison ( and other members of the DOC group. More details can be found in:

Define helper classes to propagate events between ECs using either UDP or multicast. The architecture is a bit complicated and deserves some explanation: sending the events over UDP (or mcast) is easy, a Consumer (TAO_ECG_UDP_Sender) subscribes for a certain set of events, its push() method marshalls the event set into a CDR stream that is sent using an ACE_SOCK_Dgram. The subscription set and IP address can be configured. Another helper class (TAO_ECG_UDP_Receiver) acts as a supplier of events; it receives a callback when an event is available on an ACE_SOCK_Dgram, it demarshalls the event and pushes it to the EC. Two ACE_Event_Handler classes are provided that can forward the events to this Supplier: TAO_ECG_Mcast_EH can receive events from a multicast group; TAO_ECG_UDP_EH can receive events from a regular UDP socket.

The class makes an extra copy of the events, we need to investigate if closer collaboration with its collocated EC could be used to remove that copy.

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