H323_ExternalRTPChannel Class Reference

#include <channels.h>

Inheritance diagram for H323_ExternalRTPChannel:

List of all members.

Public Member Functions
void	SetExternalAddress (const H323TransportAddress &data, const H323TransportAddress &control)
const H323TransportAddress &	GetRemoteMediaAddress () const
const H323TransportAddress &	GetRemoteMediaControlAddress () const
BOOL	GetRemoteAddress (PIPSocket::Address &ip, WORD &dataPort) const
Construction
	H323_ExternalRTPChannel (H323Connection &connection, const H323Capability &capability, Directions direction, unsigned sessionID)
	H323_ExternalRTPChannel (H323Connection &connection, const H323Capability &capability, Directions direction, unsigned sessionID, const H323TransportAddress &data, const H323TransportAddress &control)
	H323_ExternalRTPChannel (H323Connection &connection, const H323Capability &capability, Directions direction, unsigned sessionID, const PIPSocket::Address &ip, WORD dataPort)
Overrides from class H323Channel
virtual unsigned	GetSessionID () const
virtual BOOL	GetMediaTransportAddress (OpalTransportAddress &data, OpalTransportAddress &control) const
virtual BOOL	Start ()
virtual void	Receive ()
virtual void	Transmit ()
Overrides from class H323_RealTimeChannel
virtual BOOL	OnSendingPDU (H245_H2250LogicalChannelParameters &param) const
virtual void	OnSendOpenAck (H245_H2250LogicalChannelAckParameters &param) const
virtual BOOL	OnReceivedPDU (const H245_H2250LogicalChannelParameters &param, unsigned &errorCode)
virtual BOOL	OnReceivedAckPDU (const H245_H2250LogicalChannelAckParameters &param)
Protected Member Functions
void	Construct (unsigned id)
Protected Attributes
unsigned	sessionID
H323TransportAddress	externalMediaAddress
H323TransportAddress	externalMediaControlAddress
H323TransportAddress	remoteMediaAddress
H323TransportAddress	remoteMediaControlAddress

---

Detailed Description

This class is for encpsulating the IETF Real Time Protocol interface as used by a remote host.

---

Constructor & Destructor Documentation

H323_ExternalRTPChannel::H323_ExternalRTPChannel (  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

H323_ExternalRTPChannel::H323_ExternalRTPChannel (  H323Connection &  connection, const H323Capability &  capability, Directions  direction, unsigned  sessionID, const H323TransportAddress &  data, const H323TransportAddress &  control )

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 data  Data address control  Control address

H323_ExternalRTPChannel::H323_ExternalRTPChannel (  H323Connection &  connection, const H323Capability &  capability, Directions  direction, unsigned  sessionID, const PIPSocket::Address &  ip, WORD  dataPort )

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 ip  IP address of media server dataPort  Data port (control is dataPort+1)

---

Member Function Documentation

void H323_ExternalRTPChannel::Construct (  unsigned  id  )  [protected]

virtual BOOL H323_ExternalRTPChannel::GetMediaTransportAddress (  OpalTransportAddress &  data, OpalTransportAddress &  control )  const [virtual]

Get the media transport address for the connection. This is primarily used to determine if media bypass is possible for the call between two connections. The default behaviour returns FALSE. Parameters: data  Data channel address control  Control channel address Reimplemented from H323Channel.

BOOL H323_ExternalRTPChannel::GetRemoteAddress (  PIPSocket::Address &  ip, WORD &  dataPort )  const

const H323TransportAddress& H323_ExternalRTPChannel::GetRemoteMediaAddress (   )  const [inline]

const H323TransportAddress& H323_ExternalRTPChannel::GetRemoteMediaControlAddress (   )  const [inline]

virtual unsigned H323_ExternalRTPChannel::GetSessionID (   )  const [virtual]

Indicate the session number of the channel. Return session for channel. This returns the session ID of the RTP_Session member variable. Reimplemented from H323Channel.

virtual BOOL H323_ExternalRTPChannel::OnReceivedAckPDU (  const H245_H2250LogicalChannelAckParameters &  param  )  [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 behaviour sets the remote ports to send UDP packets to. Parameters: param  Acknowledgement PDU Implements H323_RealTimeChannel.

virtual BOOL H323_ExternalRTPChannel::OnReceivedPDU (  const H245_H2250LogicalChannelParameters &  param, 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 behaviour sets the remote ports to send UDP packets to. Parameters: param  Acknowledgement PDU errorCode  Error on failure Implements H323_RealTimeChannel.

virtual BOOL H323_ExternalRTPChannel::OnSendingPDU (  H245_H2250LogicalChannelParameters &  param  )  const [virtual]

Fill out the OpenLogicalChannel PDU for the particular channel type. Parameters: param  Open PDU to send. Implements H323_RealTimeChannel.

virtual void H323_ExternalRTPChannel::OnSendOpenAck (  H245_H2250LogicalChannelAckParameters &  param  )  const [virtual]

This is called when request to create a channel is received from a remote machine and is about to be acknowledged. Parameters: param  Acknowledgement PDU Implements H323_RealTimeChannel.

virtual void H323_ExternalRTPChannel::Receive (   )  [virtual]

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

void H323_ExternalRTPChannel::SetExternalAddress (  const H323TransportAddress &  data, const H323TransportAddress &  control )

Parameters: data  Data address control  Control address

virtual BOOL H323_ExternalRTPChannel::Start (   )  [virtual]

Start the channel. Reimplemented from H323UnidirectionalChannel.

virtual void H323_ExternalRTPChannel::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).

---

Member Data Documentation

H323TransportAddress H323_ExternalRTPChannel::externalMediaAddress [protected]

H323TransportAddress H323_ExternalRTPChannel::externalMediaControlAddress [protected]

H323TransportAddress H323_ExternalRTPChannel::remoteMediaAddress [protected]

H323TransportAddress H323_ExternalRTPChannel::remoteMediaControlAddress [protected]

unsigned H323_ExternalRTPChannel::sessionID [protected]

---

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

• channels.h

---