332 lines
9.6 KiB
C
332 lines
9.6 KiB
C
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/***********************************************************************
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* *
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* Filename: rtdse.c *
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* Module: H245 Finite State Machine Subsystem *
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* *
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***********************************************************************
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* INTEL Corporation Proprietary Information *
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* *
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* This listing is supplied under the terms of a license agreement *
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* with INTEL Corporation and may not be copied nor disclosed except *
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* in accordance with the terms of that agreement. *
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* *
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* Copyright (c) 1996 Intel Corporation. All rights reserved. *
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***********************************************************************
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* *
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* $Workfile: rtdse.c $
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* $Revision: 1.4 $
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* $Modtime: Feb 28 1997 13:13:32 $
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* $Log: S:/STURGEON/SRC/H245/SRC/VCS/rtdse.c_v $
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*
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* Rev 1.4 Feb 28 1997 13:14:24 tomitowx
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* fixed Roundtripdelay timer problem.
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* that occurs when ping peer link is invalid/unvailable
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* due to an abnormal application/machine shutdown.
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*
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* Rev 1.3 09 Dec 1996 13:37:04 EHOWARDX
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* Updated copyright notice.
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*
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* Rev 1.2 04 Jun 1996 13:57:26 EHOWARDX
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* Fixed Release build warnings.
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*
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* Rev 1.1 30 May 1996 23:39:28 EHOWARDX
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* Cleanup.
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*
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* Rev 1.0 09 May 1996 21:06:42 EHOWARDX
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* Initial revision.
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*
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* Rev 1.1 09 May 1996 19:48:24 EHOWARDX
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* Change TimerExpiryF function arguements.
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*
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* Rev 1.0 15 Apr 1996 10:46:40 EHOWARDX
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* Initial revision.
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* *
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***********************************************************************/
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#include "precomp.h"
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#include "h245api.h"
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#include "h245com.h"
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#include "h245fsm.h"
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#include "rtdse.h"
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// Out-going/In-coming RTDSE states
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#define RTDSE_IDLE 0 // IDLE
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#define RTDSE_WAIT 1 // AWAITING_RESPONSE
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extern unsigned int uT105;
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/***********************************************************************
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*
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* LOCAL FUNCTIONS
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*
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***********************************************************************/
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/*
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* NAME
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* T105ExpiryF - Callback function called by the timer
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*
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*
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* PARAMETERS
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* INPUT dwInst current instance of H.245
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* INPUT id timer id
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* INPUT pObject pointer to a State Entity
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*
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*
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* RETURN VALUE
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* OK
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*/
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int T105ExpiryF(struct InstanceStruct *pInstance, DWORD_PTR dwTimerId, void *pObject)
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{
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return FsmTimerEvent(pInstance, dwTimerId, pObject, T105Expiry);
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} // T105ExpiryF()
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static void BuildRoundTripDelayResponse(PDU_t *pOut, BYTE bySequenceNumber)
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{
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pOut->choice = MSCMg_rspns_chosen;
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pOut->u.MSCMg_rspns.choice = roundTripDelayResponse_chosen;
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pOut->u.MSCMg_rspns.u.roundTripDelayResponse.sequenceNumber = bySequenceNumber;
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} // BuildRoundTripDelayResponse()
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/***********************************************************************
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*
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* FINITE STATE MACHINE FUNCTIONS
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*
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***********************************************************************/
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/*
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* NAME
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* RTDSE0_TRANSFER_requestF - TRANSFER.request from API in IDLE state
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*
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*
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* PARAMETERS
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* INPUT pObject pointer to State Entity
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* INPUT pPdu pointer to PDU
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*
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* RETURN VALUE
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* Error return codes defined in h245com.h
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*/
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HRESULT RTDSE0_TRANSFER_requestF (Object_t *pObject, PDU_t *pPdu)
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{
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HRESULT lError;
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ASSERT(pObject->Entity == RTDSE);
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ASSERT(pObject->State == RTDSE_IDLE);
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H245TRACE(pObject->dwInst, 2, "RTDSE0_TRANSFER_request:%d", pObject->Key);
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pObject->pInstance->StateMachine.byRtdseSequence++;
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pPdu->u.MltmdSystmCntrlMssg_rqst.u.roundTripDelayRequest.sequenceNumber =
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pObject->pInstance->StateMachine.byRtdseSequence;
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// Send RoundTripDelayRequest PDU to remote peer
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lError = sendPDU(pObject->pInstance, pPdu);
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//tomitowoju@intel.com
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if(lError == H245_ERROR_OK)
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{
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// Set timer T105
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pObject->State = RTDSE_WAIT;
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FsmStartTimer(pObject, T105ExpiryF, uT105);
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}
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//tomitowoju@intel.com
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// Set timer T105
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// pObject->State = RTDSE_WAIT;
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// FsmStartTimer(pObject, T105ExpiryF, uT105);
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//tomitowoju@intel.com
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return lError;
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} // RTDSE0_TRANSFER_request
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/*
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* NAME
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* RTDSE0_RoundTripDelayRequestF - RoundTripDelayRequest received in IDLE state
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*
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*
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* PARAMETERS
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* INPUT pObject pointer to State Entity
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* INPUT pPdu pointer to PDU
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*
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* RETURN VALUE
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* Error return codes defined in h245com.h
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*/
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HRESULT RTDSE0_RoundTripDelayRequestF (Object_t *pObject, PDU_t *pPdu)
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{
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PDU_t * pOut;
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HRESULT lError;
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ASSERT(pObject->Entity == RTDSE);
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ASSERT(pObject->State == RTDSE_IDLE);
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H245TRACE(pObject->dwInst, 2, "RTDSE0_RoundTripDelayRequest:%d", pObject->Key);
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// Send RoundTripDelayResponse to remote peer
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pOut = MemAlloc(sizeof(*pOut));
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if (pOut == NULL)
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{
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H245TRACE(pObject->dwInst, 2,
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"RTDSE0_RoundTripDelayRequestF: memory allocation failed");
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return H245_ERROR_NOMEM;
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}
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BuildRoundTripDelayResponse(pOut, (BYTE)pPdu->u.MltmdSystmCntrlMssg_rqst.u.roundTripDelayRequest.sequenceNumber);
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lError = sendPDU(pObject->pInstance, pOut);
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MemFree(pOut);
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return lError;
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} // RTDSE0_RoundTripDelayRequest
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/*
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* NAME
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* RTDSE1_TRANSFER_requestF - TRANSFER.request from API in AWAITING RESPONSE state
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*
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*
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* PARAMETERS
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* INPUT pObject pointer to State Entity
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* INPUT pPdu pointer to PDU
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*
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* RETURN VALUE
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* Error return codes defined in h245com.h
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*/
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HRESULT RTDSE1_TRANSFER_requestF (Object_t *pObject, PDU_t *pPdu)
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{
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HRESULT lError;
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ASSERT(pObject->Entity == RTDSE);
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ASSERT(pObject->State == RTDSE_WAIT);
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H245TRACE(pObject->dwInst, 2, "RTDSE1_TRANSFER_request:%d", pObject->Key);
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// Reset timer T105
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FsmStopTimer(pObject);
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pObject->pInstance->StateMachine.byRtdseSequence++;
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pPdu->u.MltmdSystmCntrlMssg_rqst.u.roundTripDelayRequest.sequenceNumber =
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pObject->pInstance->StateMachine.byRtdseSequence;
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// Send RoundTripDelayRequest PDU to remote
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lError = sendPDU(pObject->pInstance, pPdu);
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// Set timer T105
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FsmStartTimer(pObject, T105ExpiryF, uT105);
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return lError;
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} // RTDSE1_TRANSFER_request
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/*
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* NAME
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* RTDSE1_RoundTripDelayRequestF - RoundTripDelayRequest received in AWAITING RESPONSE state
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*
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*
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* PARAMETERS
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* INPUT pObject pointer to State Entity
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* INPUT pPdu pointer to PDU
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*
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* RETURN VALUE
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* Error return codes defined in h245com.h
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*/
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HRESULT RTDSE1_RoundTripDelayRequestF (Object_t *pObject, PDU_t *pPdu)
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{
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PDU_t * pOut;
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HRESULT lError;
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ASSERT(pObject->Entity == RTDSE);
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ASSERT(pObject->State == RTDSE_WAIT);
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H245TRACE(pObject->dwInst, 2, "RTDSE1_RoundTripDelayRequest:%d", pObject->Key);
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// Send RoundTripDelayResponse to remote peer
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pOut = MemAlloc(sizeof(*pOut));
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if (pOut == NULL)
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{
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H245TRACE(pObject->dwInst, 2,
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"RTDSE1_RoundTripDelayRequestF: memory allocation failed");
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return H245_ERROR_NOMEM;
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}
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BuildRoundTripDelayResponse(pOut, (BYTE)pPdu->u.MltmdSystmCntrlMssg_rqst.u.roundTripDelayRequest.sequenceNumber);
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lError = sendPDU(pObject->pInstance, pOut);
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MemFree(pOut);
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return lError;
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} // RTDSE1_RoundTripDelayRequest
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/*
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* NAME
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* RTDSE1_RoundTripDelayResponseF - RoundTripDelayResponse in AWAITING RESPONSE state
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*
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*
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* PARAMETERS
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* INPUT pObject pointer to State Entity
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* INPUT pPdu pointer to PDU
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*
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* RETURN VALUE
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* Error return codes defined in h245com.h
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*/
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HRESULT RTDSE1_RoundTripDelayResponseF (Object_t *pObject, PDU_t *pPdu)
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{
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ASSERT(pObject->Entity == RTDSE);
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ASSERT(pObject->State == RTDSE_WAIT);
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H245TRACE(pObject->dwInst, 2, "RTDSE1_RoundTripDelayResponse:%d", pObject->Key);
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if (pPdu->u.MSCMg_rspns.u.roundTripDelayResponse.sequenceNumber ==
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pObject->pInstance->StateMachine.byRtdseSequence)
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{
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// Reset timer T105
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FsmStopTimer(pObject);
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// Send TRANSFER.confirm to H.245 user
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pObject->State = RTDSE_IDLE;
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H245FsmConfirm(pPdu, H245_CONF_RTDSE, pObject->pInstance, pObject->dwTransId, FSM_OK);
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}
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return 0;
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} // RTDSE1_RoundTripDelayResponse
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/*
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* NAME
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* RTDSE1_T105ExpiryF - timer T105 Expiry in AWAITING RESPONSE state
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*
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*
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* PARAMETERS
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* INPUT pObject pointer to State Entity
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* INPUT pPdu pointer to PDU
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*
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* RETURN VALUE
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* Error return codes defined in h245com.h
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*/
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HRESULT RTDSE1_T105ExpiryF (Object_t *pObject, PDU_t *pPdu)
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{
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ASSERT(pObject->Entity == RTDSE);
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ASSERT(pObject->State == RTDSE_WAIT);
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ASSERT(pPdu == NULL);
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H245TRACE(pObject->dwInst, 2, "RTDSE1_T105Expiry:%d", pObject->Key);
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// Send EXPIRY.notification to client
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pObject->State = RTDSE_IDLE;
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H245FsmConfirm(NULL, H245_CONF_RTDSE_EXPIRED, pObject->pInstance, pObject->dwTransId, FSM_OK);
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return 0;
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} // RTDSE1_T105Expiry
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