H323_T120Channel Class Reference

#include <h323t120.h>

Inheritance diagram for H323_T120Channel:

H323DataChannel H323UnidirectionalChannel H323Channel

List of all members.

Public Member Functions

virtual void HandleChannel ()
Construction
 H323_T120Channel (H323Connection &connection, const H323Capability &capability, Directions direction, unsigned sessionID)
Overrides from class H323Channel
virtual void Receive ()
virtual void Transmit ()
virtual BOOL OnSendingPDU (H245_OpenLogicalChannel &openPDU) const
virtual void OnSendOpenAck (const H245_OpenLogicalChannel &open, H245_OpenLogicalChannelAck &ack) const
virtual BOOL OnReceivedPDU (const H245_OpenLogicalChannel &pdu, unsigned &errorCode)
virtual BOOL OnReceivedAckPDU (const H245_OpenLogicalChannelAck &pdu)

Protected Attributes

OpalT120Protocolt120handler


Detailed Description

This class describes the T.120 logical channel.

Constructor & Destructor Documentation

H323_T120Channel::H323_T120Channel ( H323Connection connection,
const H323Capability capability,
Directions  direction,
unsigned  sessionID 
)

Create a new channel.

Parameters:
connection Connection to endpoint for channel
capability Capability channel is using
direction Direction of channel
sessionID Session ID for channel


Member Function Documentation

virtual void H323_T120Channel::HandleChannel (  )  [virtual]

virtual BOOL H323_T120Channel::OnReceivedAckPDU ( const H245_OpenLogicalChannelAck pdu  )  [virtual]

This is called after a request to create a channel occurs from the local machine via the H245LogicalChannelDict::Open() function, and the request has been acknowledged by the remote endpoint.

The default makes sure the parameters are compatible and passes on the PDU to the rtp session.

Parameters:
pdu Acknowledgement PDU

Reimplemented from H323DataChannel.

virtual BOOL H323_T120Channel::OnReceivedPDU ( const H245_OpenLogicalChannel pdu,
unsigned &  errorCode 
) [virtual]

This is called after a request to create a channel occurs from the local machine via the H245LogicalChannelDict::Open() function, and the request has been acknowledged by the remote endpoint.

The default makes sure the parameters are compatible and passes on the PDU to the rtp session.

Parameters:
pdu Open PDU
errorCode Error code on failure

Reimplemented from H323DataChannel.

virtual BOOL H323_T120Channel::OnSendingPDU ( H245_OpenLogicalChannel openPDU  )  const [virtual]

Fill out the OpenLogicalChannel PDU for the particular channel type.

Parameters:
openPDU Open PDU to send.

Reimplemented from H323DataChannel.

virtual void H323_T120Channel::OnSendOpenAck ( const H245_OpenLogicalChannel open,
H245_OpenLogicalChannelAck ack 
) const [virtual]

This is called when request to create a channel is received from a remote machine and is about to be acknowledged.

Parameters:
open Open PDU
ack Acknowledgement PDU

Reimplemented from H323DataChannel.

virtual void H323_T120Channel::Receive (  )  [virtual]

Handle channel data reception.

This is called by the thread started by the Start() function and is typically a loop reading from the transport and handling PDU's.

The default behaviour here is to call HandleChannel()

Implements H323Channel.

virtual void H323_T120Channel::Transmit (  )  [virtual]

Handle channel data transmission.

This is called by the thread started by the Start() function and is typically a loop reading from the codec and writing to the transport (eg an RTP_session).

The default behaviour here is to call HandleChannel()

Implements H323Channel.


Member Data Documentation


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

Generated on Mon Apr 27 11:46:34 2009 for OpenH323 by  doxygen 1.5.8