/***********************************************************************
* *
* Filename: mrse.c *
* Module: H245 Finite State Machine Subsystem *
* *
***********************************************************************
* INTEL Corporation Proprietary Information *
* *
* This listing is supplied under the terms of a license agreement *
* with INTEL Corporation and may not be copied nor disclosed except *
* in accordance with the terms of that agreement. *
* *
* Copyright (c) 1996 Intel Corporation. All rights reserved. *
***********************************************************************
* *
* $Workfile: mrse.c $
* $Revision: 1.5 $
* $Modtime: 13 Feb 1997 19:25:48 $
* $Log: S:/STURGEON/SRC/H245/SRC/VCS/mrse.c_v $
*
* Rev 1.5 13 Feb 1997 19:31:20 MANDREWS
* Fixed bug in generation of request mode ack and request mode reject;
* the sequence number was not being copied into the pdu.
*
* Rev 1.4 09 Dec 1996 13:34:46 EHOWARDX
* Updated copyright notice.
*
* Rev 1.3 04 Jun 1996 14:01:06 EHOWARDX
* Fixed Release build warnings.
*
* Rev 1.2 30 May 1996 23:39:16 EHOWARDX
* Cleanup.
*
* Rev 1.1 28 May 1996 14:25:44 EHOWARDX
* Tel Aviv update.
*
* Rev 1.0 09 May 1996 21:06:32 EHOWARDX
* Initial revision.
*
* Rev 1.1 09 May 1996 19:48:08 EHOWARDX
* Change TimerExpiryF function arguements.
*
* Rev 1.0 15 Apr 1996 10:44:52 EHOWARDX
* Initial revision.
* *
***********************************************************************/
#include "precomp.h"
#include "h245api.h"
#include "h245com.h"
#include "h245fsm.h"
#include "mrse.h"
// Out-going/In-coming MRSE states
#define MRSE_IDLE 0 // IDLE
#define MRSE_WAIT 1 // AWAITING_RESPONSE
extern unsigned int uT109;
/***********************************************************************
*
* LOCAL FUNCTIONS
*
***********************************************************************/
/*
* NAME
* T109ExpiryF - Callback function called by the timer
*
*
* PARAMETERS
* INPUT dwInst current instance of H245
* INPUT id timer id
* INPUT pObject pointer to a State Entity
*
*
* RETURN VALUE
* OK
*/
int T109ExpiryF(struct InstanceStruct *pInstance, DWORD_PTR dwTimerId, void *pObject)
{
return FsmTimerEvent(pInstance, dwTimerId, pObject, T109Expiry);
} // T109ExpiryF()
/***********************************************************************
*
* OUT-GOING FINITE STATE MACHINE FUNCTIONS
*
***********************************************************************/
/*
* NAME
* MRSE0_TRANSFER_requestF - TRANSFER.request from API in IDLE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE0_TRANSFER_requestF (Object_t *pObject, PDU_t *pPdu)
{
HRESULT lError;
ASSERT(pObject->Entity == MRSE_OUT);
ASSERT(pObject->State == MRSE_IDLE);
H245TRACE(pObject->dwInst, 2, "MRSE0_TRANSFER_request:%d", pObject->Key);
pObject->pInstance->StateMachine.byMrseOutSequence++;
pPdu->u.MltmdSystmCntrlMssg_rqst.u.requestMode.sequenceNumber =
pObject->pInstance->StateMachine.byMrseOutSequence;
// Send Request Mode PDU to remote
lError = sendPDU(pObject->pInstance, pPdu);
// Set timer T109
pObject->State = MRSE_WAIT;
FsmStartTimer(pObject, T109ExpiryF, uT109);
return lError;
} // MRSE0_TRANSFER_request
/*
* NAME
* MRSE1_TRANSFER_requestF - TRANSFER.request from API in AWAITING RESPONSE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE1_TRANSFER_requestF (Object_t *pObject, PDU_t *pPdu)
{
HRESULT lError;
ASSERT(pObject->Entity == MRSE_OUT);
ASSERT(pObject->State == MRSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MRSE1_TRANSFER_request:%d", pObject->Key);
// Reset timer T109
FsmStopTimer(pObject);
pObject->pInstance->StateMachine.byMrseOutSequence++;
pPdu->u.MltmdSystmCntrlMssg_rqst.u.requestMode.sequenceNumber =
pObject->pInstance->StateMachine.byMrseOutSequence;
// Send Request Mode PDU to remote
lError = sendPDU(pObject->pInstance, pPdu);
// Set timer T109
FsmStartTimer(pObject, T109ExpiryF, uT109);
return lError;
} // MRSE1_TRANSFER_request
/*
* NAME
* MRSE1_RequestModeAckF - RequestModeAck in AWAITING RESPONSE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE1_RequestModeAckF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MRSE_OUT);
ASSERT(pObject->State == MRSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MRSE1_RequestModeAck:%d", pObject->Key);
if (pPdu->u.MSCMg_rspns.u.requestModeAck.sequenceNumber ==
pObject->pInstance->StateMachine.byMrseOutSequence)
{
// Reset timer T109
FsmStopTimer(pObject);
// Send TRANSFER.confirm to H.245 user
pObject->State = MRSE_IDLE;
H245FsmConfirm(pPdu, H245_CONF_MRSE, pObject->pInstance, pObject->dwTransId, FSM_OK);
}
return 0;
} // MRSE1_RequestModeAck
/*
* NAME
* MRSE1_RequestModeRejF - RequestModeReject in AWAITING RESPONSE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE1_RequestModeRejF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MRSE_OUT);
ASSERT(pObject->State == MRSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MRSE0_RequestModeRej:%d", pObject->Key);
if (pPdu->u.MSCMg_rspns.u.requestModeReject.sequenceNumber ==
pObject->pInstance->StateMachine.byMrseOutSequence)
{
// Reset timer T109
FsmStopTimer(pObject);
// Send REJECT.indication to H.245 user
// CAUSE = RequestModeReject.cause
pObject->State = MRSE_IDLE;
H245FsmConfirm(pPdu, H245_CONF_MRSE_REJECT, pObject->pInstance, pObject->dwTransId, FSM_OK);
}
return 0;
} // MRSE1_RequestModeRej
/*
* NAME
* MRSE1_T109ExpiryF - timer T109 Expiry
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE1_T109ExpiryF (Object_t *pObject, PDU_t *pPdu)
{
HRESULT lError;
PDU_t * pOut;
unsigned short wNumber = (unsigned short) pObject->Key;
ASSERT(pObject->Entity == MRSE_OUT);
ASSERT(pObject->State == MRSE_WAIT);
ASSERT(pPdu == NULL);
H245TRACE(pObject->dwInst, 2, "MRSE1_T109Expiry:%d", pObject->Key);
// Send RequestModeRelease PDU to remote peer
pOut = MemAlloc(sizeof(*pOut));
if (pOut == NULL)
{
H245TRACE(pObject->dwInst, 2,
"MRSE1_T109ExpiryF: memory allocation failed");
return H245_ERROR_NOMEM;
}
pOut->choice = indication_chosen;
pOut->u.indication.choice = requestModeRelease_chosen;
lError = sendPDU(pObject->pInstance, pOut);
MemFree(pOut);
// Send REJECT.indication to H.245 user
// SOURCE := PROTOCOL
pObject->State = MRSE_IDLE;
H245FsmConfirm(NULL, H245_CONF_MRSE_EXPIRED, pObject->pInstance, pObject->dwTransId, FSM_OK);
return lError;
} // MRSE1_T109Expiry
/***********************************************************************
*
* IN-COMING FINITE STATE MACHINE FUNCTIONS
*
***********************************************************************/
/*
* NAME
* MRSE0_RequestModeF - RequestMode received in IDLE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE0_RequestModeF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MRSE_IN);
ASSERT(pObject->State == MRSE_IDLE);
H245TRACE(pObject->dwInst, 2, "MRSE0_RequestMode:%d", pObject->Key);
pObject->byInSequence = (unsigned char)
pPdu->u.MltmdSystmCntrlMssg_rqst.u.requestMode.sequenceNumber;
// Send TRANSFER.indication to H.245 user
pObject->State = MRSE_WAIT;
H245FsmIndication(pPdu, H245_IND_MRSE, pObject->pInstance, pObject->dwTransId, FSM_OK);
return 0;
} // MRSE0_RequestMode
/*
* NAME
* MRSE1_RequestModeF - RequestMode received in AWAITING RESPONSE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE1_RequestModeF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MRSE_IN);
ASSERT(pObject->State == MRSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MRSE1_RequestMode:%d", pObject->Key);
pObject->byInSequence = (unsigned char)
pPdu->u.MltmdSystmCntrlMssg_rqst.u.requestMode.sequenceNumber;
#if defined(SDL_COMPLIANT)
// Send REJECT.indication to H.245 user
H245FsmIndication(pPdu, H245_IND_MRSE_RELEASE, pObject->pInstance, pObject->dwTransId, FSM_OK);
#endif
// Send TRANSFER.indication to H.245 user
H245FsmIndication(pPdu, H245_IND_MRSE, pObject->pInstance, pObject->dwTransId, FSM_OK);
return 0;
} // MRSE1_RequestMode
/*
* NAME
* MRSE1_RequestModeReleaseF - RequestModeRelease received in AWAITING RESPONSE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE1_RequestModeReleaseF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MRSE_IN);
ASSERT(pObject->State == MRSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MRSE1_RequestModeRelease:%d", pObject->Key);
// Send REJECT.indication to H.245 user
// SOURCE:=PROTOCOL
pObject->State = MRSE_IDLE;
H245FsmIndication(pPdu, H245_IND_MRSE_RELEASE, pObject->pInstance, pObject->dwTransId, FSM_OK);
return 0;
} // MRSE1_RequestModeRelease
/*
* NAME
* MRSE1_TRANSFER_responseF - TRANSFER.response from API in AWAITING RESPONSE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE1_TRANSFER_responseF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MRSE_IN);
ASSERT(pObject->State == MRSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MRSE1_TRANSFER_response:%d", pObject->Key);
// Send RequestModeAck PDU to remote peer
pObject->State = MRSE_IDLE;
pPdu->u.MSCMg_rspns.u.requestModeAck.sequenceNumber = pObject->byInSequence;
return sendPDU(pObject->pInstance, pPdu);
} // MRSE1_TRANSFER_response
/*
* NAME
* MRSE1_REJECT_requestF - REJECT.request from API in AWAITING RESPONSE state
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MRSE1_REJECT_requestF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MRSE_IN);
ASSERT(pObject->State == MRSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MRSE1_REJECT_request:%d", pObject->Key);
// Send RequestModeReject PDU to remote
pObject->State = MRSE_IDLE;
pPdu->u.MSCMg_rspns.u.requestModeReject.sequenceNumber = pObject->byInSequence;
return sendPDU(pObject->pInstance, pPdu);
} // MRSE1_REJECT_request