358 lines
7.2 KiB
C
358 lines
7.2 KiB
C
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#ifndef _cbridge_h245_h_
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#define _cbridge_h245_h_
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// H245 states
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// H245_STATE_CON_LISTEN is only applicable to the source side
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// H245_STATE_CON_INFO is only applicable to the dest side
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enum H245_STATE
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{
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H245_STATE_NOT_INIT = 0,
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H245_STATE_INIT,
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H245_STATE_CON_LISTEN,
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H245_STATE_CON_INFO,
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H245_STATE_CON_ESTD
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};
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class H245_INFO :
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public OVERLAPPED_PROCESSOR
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{
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// we need to let the LOGICAL_CHANNEL send PDUs using the
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// H245 sockets and transition to shutdown mode
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friend HRESULT
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LOGICAL_CHANNEL::ProcessOpenLogicalChannelRejectPDU (
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IN MultimediaSystemControlMessage *pH245pdu
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);
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// XXX Is this the only way out ?
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friend HRESULT
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T120_LOGICAL_CHANNEL::HandleOpenLogicalChannelPDU(
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IN H245_INFO &H245Info,
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IN MEDIA_TYPE MediaType,
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IN WORD LogicalChannelNumber,
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IN BYTE SessionId,
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IN DWORD T120ConnectToIPAddr,
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IN WORD T120ConnectToPort,
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IN MultimediaSystemControlMessage *pH245pdu
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);
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friend HRESULT
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T120_LOGICAL_CHANNEL::ProcessOpenLogicalChannelAckPDU(
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IN MultimediaSystemControlMessage *pH245pdu
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);
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public:
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inline
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H245_INFO (
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void
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);
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inline
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void
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Init (
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IN H323_STATE &H323State
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);
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inline
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H245_INFO &GetOtherH245Info (
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void
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);
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inline
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LOGICAL_CHANNEL_ARRAY &GetLogicalChannelArray (
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void
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);
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HRESULT
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ProcessMessage (
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IN MultimediaSystemControlMessage * pH245pdu
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);
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HRESULT
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H245_INFO::SendEndSessionCommand (
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void
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);
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virtual
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~H245_INFO (
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void
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);
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protected:
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H245_STATE m_H245State;
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// logical channels
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LOGICAL_CHANNEL_ARRAY m_LogicalChannelArray;
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// the other h245 addresses are needed because we need to
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// cancel NAT redirections in the logical channel destructor
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// and we can't access the other h245 instance there because
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// it may have been destroyed already
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// queue an asynchronous receive call back
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inline
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HRESULT
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QueueReceive (
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void
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);
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// queue an asynchronous send call back
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inline
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HRESULT QueueSend (
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IN MultimediaSystemControlMessage *pH245pdu
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);
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virtual
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HRESULT AcceptCallback (
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IN DWORD Status,
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IN SOCKET Socket,
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IN SOCKADDR_IN * LocalAddress,
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IN SOCKADDR_IN * RemoteAddress
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)
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{
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_ASSERTE(FALSE);
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return E_UNEXPECTED;
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}
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virtual
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HRESULT
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ReceiveCallback (
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IN HRESULT CallbackHResult,
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IN BYTE *pBuf,
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IN DWORD BufLen
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);
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virtual
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HRESULT
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ReceiveCallback (
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IN MultimediaSystemControlMessage *pH245pdu
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);
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virtual
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HRESULT
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SendCallback (
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IN HRESULT CallbackHResult
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);
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private:
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HRESULT
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HandleRequestMessage (
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IN MultimediaSystemControlMessage *pH245pdu
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);
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HRESULT ProcessResponseMessage (
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IN MultimediaSystemControlMessage *pH245pdu
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);
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HRESULT CheckOpenLogicalChannelPDU (
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IN MultimediaSystemControlMessage &H245pdu,
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OUT BYTE &SessionId,
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OUT MEDIA_TYPE &MediaType
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);
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HRESULT CheckOpenLogicalChannelPDU (
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IN MultimediaSystemControlMessage &H245pdu,
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OUT BYTE &SessionId,
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OUT DWORD &SourceIPv4Address,
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OUT WORD &SourceRTCPPort
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);
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HRESULT HandleOpenLogicalChannelPDU (
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IN MultimediaSystemControlMessage *pH245pdu
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);
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HRESULT HandleCloseLogicalChannelPDU (
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IN MultimediaSystemControlMessage *pH245pdu
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);
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HRESULT CheckOpenRtpLogicalChannelPDU (
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IN OpenLogicalChannel &OlcPDU,
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OUT SOCKADDR_IN * ReturnSourceAddress
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);
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HRESULT CheckOpenT120LogicalChannelPDU (
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IN OpenLogicalChannel &OlcPDU,
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OUT DWORD &T120ConnectToIPAddr,
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OUT WORD &T120ConnectToPort
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);
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HRESULT CreateRtpLogicalChannel (
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IN OpenLogicalChannel &OlcPDU,
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IN BYTE SessionId,
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IN MEDIA_TYPE MediaType,
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IN MultimediaSystemControlMessage *pH245pdu,
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OUT LOGICAL_CHANNEL **ppReturnLogicalChannel
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);
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HRESULT CreateT120LogicalChannel (
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IN OpenLogicalChannel &OlcPDU,
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IN BYTE SessionId,
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IN MEDIA_TYPE MediaType,
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IN MultimediaSystemControlMessage *pH245pdu,
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OUT LOGICAL_CHANNEL **ppReturnLogicalChannel
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);
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};
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inline
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H245_INFO::H245_INFO (
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)
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: m_H245State(H245_STATE_NOT_INIT)
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{
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}
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inline
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void
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H245_INFO::Init (
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IN H323_STATE &H323State
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)
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{
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// initialize the overlaped processor
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OVERLAPPED_PROCESSOR::Init(OPT_H245, H323State);
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m_LogicalChannelArray.Init();
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m_H245State = H245_STATE_INIT;
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}
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inline LOGICAL_CHANNEL_ARRAY &
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H245_INFO::GetLogicalChannelArray (
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void
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)
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{
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return m_LogicalChannelArray;
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}
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class SOURCE_H245_INFO :
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public H245_INFO
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{
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public:
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inline
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SOURCE_H245_INFO (
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void
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);
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inline
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void Init (
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IN SOURCE_H323_STATE &SourceH323State
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);
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inline
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SOURCE_Q931_INFO &GetSourceQ931Info (
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void
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);
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inline
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DEST_H245_INFO &GetDestH245Info (
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void
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);
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HRESULT
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ListenForCaller (
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IN SOCKADDR_IN * ListenAddress
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);
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protected:
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virtual
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HRESULT
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AcceptCallback (
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IN DWORD Status,
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IN SOCKET Socket,
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IN SOCKADDR_IN * LocalAddress,
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IN SOCKADDR_IN * RemoteAddress
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);
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};
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inline
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SOURCE_H245_INFO::SOURCE_H245_INFO (
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void
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)
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{
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}
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inline
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void
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SOURCE_H245_INFO::Init (
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IN SOURCE_H323_STATE &SourceH323State
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)
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{
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H245_INFO::Init((H323_STATE &)SourceH323State);
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}
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class DEST_H245_INFO :
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public H245_INFO
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{
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public:
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inline
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DEST_H245_INFO (
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void
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);
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inline
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void
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Init (
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IN DEST_H323_STATE &DestH323State
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);
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inline
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void
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SetCalleeInfo (
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IN SOCKADDR_IN * CalleeAddress
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);
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inline
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DEST_Q931_INFO &GetDestQ931Info (
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void
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);
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inline
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HRESULT ConnectToCallee (
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void
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);
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protected:
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SOCKADDR_IN m_CalleeAddress;
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};
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inline
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DEST_H245_INFO::DEST_H245_INFO (
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void
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)
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{
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}
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inline
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void
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DEST_H245_INFO::Init (
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IN DEST_H323_STATE &DestH323State
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)
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{
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H245_INFO::Init((H323_STATE &)DestH323State);
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}
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inline void
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DEST_H245_INFO::SetCalleeInfo (
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IN SOCKADDR_IN * ArgCalleeAddress
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)
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{
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assert (ArgCalleeAddress);
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m_CalleeAddress = *ArgCalleeAddress;
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// state transition to H245_STATE_CON_INFO
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m_H245State = H245_STATE_CON_INFO;
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}
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#endif // _cbridge_h245_h_
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