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Windows2003-3790/enduser/netmeeting/av/callcont/muxentry.c

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First commit
2001-01-01 00:00:00 +01:00
/***********************************************************************
* *
* Filename: muxentry.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: MUXENTRY.C $
* $Revision: 1.5 $
* $Modtime: 09 Dec 1996 13:34:24 $
* $Log: S:/STURGEON/SRC/H245/SRC/VCS/MUXENTRY.C_v $
*
* Rev 1.5 09 Dec 1996 13:34:50 EHOWARDX
* Updated copyright notice.
*
* Rev 1.4 19 Jul 1996 12:12:46 EHOWARDX
*
* Changed to use API events defined in H245API.H instead of FSM events
* which are no longer defined in FSMEXPOR.H.
*
* Rev 1.3 14 Jun 1996 18:58:30 EHOWARDX
* Geneva Update.
*
* Rev 1.2 04 Jun 1996 13:57:06 EHOWARDX
* Fixed Release build warnings.
*
* Rev 1.1 30 May 1996 23:39:18 EHOWARDX
* Cleanup.
*
* Rev 1.0 09 May 1996 21:06:34 EHOWARDX
* Initial revision.
*
* Rev 1.14.1.3 09 May 1996 19:48:36 EHOWARDX
* Change TimerExpiryF function arguements.
*
* Rev 1.14.1.2 15 Apr 1996 10:46:00 EHOWARDX
* Update.
*
* Rev 1.14.1.1 10 Apr 1996 21:15:00 EHOWARDX
* Check-in for safety in middle of re-design.
*
* Rev 1.14.1.0 05 Apr 1996 20:52:56 EHOWARDX
* Branched.
*
* Rev 1.14 02 Apr 1996 12:01:58 helgebax
* documented code
*
* Rev 1.13 28 Mar 1996 11:20:52 helgebax
* removed mux release, fixed return values
*
* Rev 1.12 19 Mar 1996 18:09:46 helgebax
*
* removed include file: h245time.h
*
* Rev 1.11 19 Mar 1996 17:31:36 helgebax
*
* added new timers
*
* Rev 1.10 13 Mar 1996 11:49:14 helgebax
* s can also access already deleted objects
*
* Rev 1.9 13 Mar 1996 08:58:46 helgebax
* No change.
*
* Rev 1.8 11 Mar 1996 14:31:32 helgebax
* removed prototype def for release function (moved to pdu.x)
*
* Rev 1.7 07 Mar 1996 13:23:12 helgebax
* changed pObject->pdu_struct to NULL in timerExpiry function because the
* pdu pointer has been deleted
*
* Rev 1.6 01 Mar 1996 13:22:46 unknown
*
* Changed to used pdu_id to save muxentry number so when timeout occurs
* we can send the correct muxentry number in the MultiplexEntrySendRelease.
*
* Rev 1.5 01 Mar 1996 11:47:56 unknown
* Since nSequence was removed from header, I have commented out
* all references to it in the code. Also, state ASSERTs have been
* changed to reflect the fact that state changes occur BEFORE
* calling the state function, rather than AFTER.
*
* Rev 1.4 29 Feb 1996 20:57:20 helgebax
* No change.
*
* Rev 1.3 29 Feb 1996 18:19:46 EHOWARDX
* Made changes requested by Hani.
*
* Rev 1.2 28 Feb 1996 15:47:04 EHOWARDX
*
* First pass MTSE implementation complete.
* *
***********************************************************************/
#include "precomp.h"
#include "h245api.h"
#include "h245com.h"
#include "h245fsm.h"
#include "muxentry.h"
// Out-going/In-coming MTSE states
#define MTSE_IDLE 0 // IDLE
#define MTSE_WAIT 1 // AWAITING_RESPONSE
extern unsigned int uT104;
/***********************************************************************
*
* LOCAL FUNCTIONS
*
***********************************************************************/
/*
* NAME
* T103ExpiryF - 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 T104ExpiryF(struct InstanceStruct *pInstance, DWORD_PTR dwTimerId, void *pObject)
{
return FsmTimerEvent(pInstance, dwTimerId, pObject, T104Expiry);
} // T104ExpiryF()
/***********************************************************************
*
* OUT-GOING FINITE STATE MACHINE FUNCTIONS
*
***********************************************************************/
/*
* NAME
* MTSE0_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 MTSE0_TRANSFER_requestF (Object_t *pObject, PDU_t *pPdu)
{
HRESULT lError;
unsigned int uIndex;
MultiplexEntryDescriptorLink pLink;
ASSERT(pObject->Entity == MTSE_OUT);
ASSERT(pObject->State == MTSE_IDLE);
H245TRACE(pObject->dwInst, 2, "MTSE0_TRANSFER_request:%d", pObject->Key);
pObject->pInstance->StateMachine.byMtseOutSequence++;
pPdu->u.MltmdSystmCntrlMssg_rqst.u.multiplexEntrySend.sequenceNumber =
pObject->pInstance->StateMachine.byMtseOutSequence;
// Save information for release
uIndex = 0;
pLink = pPdu->u.MltmdSystmCntrlMssg_rqst.u.multiplexEntrySend.multiplexEntryDescriptors;
while (pLink)
{
pObject->u.mtse.multiplexTableEntryNumber.value[uIndex++] =
pLink->value.multiplexTableEntryNumber;
pLink = pLink->next;
}
pObject->u.mtse.multiplexTableEntryNumber.count = (unsigned short)uIndex;
// Send MultiplexEntrySend PDU to remote
lError = sendPDU(pObject->pInstance, pPdu);
// Set timer T104
pObject->State = MTSE_WAIT;
FsmStartTimer(pObject, T104ExpiryF, uT104);
return lError;
} // MTSE0_TRANSFER_request
/*
* NAME
* MTSE1_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 MTSE1_TRANSFER_requestF (Object_t *pObject, PDU_t *pPdu)
{
HRESULT lError;
unsigned int uIndex;
MultiplexEntryDescriptorLink pLink;
ASSERT(pObject->Entity == MTSE_OUT);
ASSERT(pObject->State == MTSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MTSE1_TRANSFER_request:%d", pObject->Key);
// Reset timer T104
FsmStopTimer(pObject);
pObject->pInstance->StateMachine.byMtseOutSequence++;
pPdu->u.MltmdSystmCntrlMssg_rqst.u.multiplexEntrySend.sequenceNumber =
pObject->pInstance->StateMachine.byMtseOutSequence;
// Save information for release
uIndex = 0;
pLink = pPdu->u.MltmdSystmCntrlMssg_rqst.u.multiplexEntrySend.multiplexEntryDescriptors;
while (pLink)
{
pObject->u.mtse.multiplexTableEntryNumber.value[uIndex++] =
pLink->value.multiplexTableEntryNumber;
pLink = pLink->next;
}
pObject->u.mtse.multiplexTableEntryNumber.count = (unsigned short)uIndex;
// Send MultiplexEntrySend PDU to remote
lError = sendPDU(pObject->pInstance, pPdu);
// Set timer T104
FsmStartTimer(pObject, T104ExpiryF, uT104);
return lError;
} // MTSE1_TRANSFER_request
/*
* NAME
* MTSE1_MultiplexEntrySendAckF - MultiplexEntrySendAck 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 MTSE1_MultiplexEntrySendAckF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MTSE_OUT);
ASSERT(pObject->State == MTSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MTSE1_MultiplexEntrySendAck:%d", pObject->Key);
if (pPdu->u.MltmdSystmCntrlMssg_rqst.u.multiplexEntrySend.sequenceNumber ==
pObject->pInstance->StateMachine.byMtseOutSequence)
{
// Reset timer T104
FsmStopTimer(pObject);
// Send TRANSFER.confirm to H.245 user
pObject->State = MTSE_IDLE;
H245FsmConfirm(pPdu, H245_CONF_MUXTBL_SND, pObject->pInstance, pObject->dwTransId, FSM_OK);
}
return 0;
} // MTSE1_MultiplexEntrySendAck
/*
* NAME
* MTSE1_MultiplexEntrySendRejF - MultiplexEntrySendReject 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 MTSE1_MultiplexEntrySendRejF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MTSE_OUT);
ASSERT(pObject->State == MTSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MTSE0_MultiplexEntrySendRej:%d", pObject->Key);
if (pPdu->u.MltmdSystmCntrlMssg_rqst.u.multiplexEntrySend.sequenceNumber ==
pObject->pInstance->StateMachine.byMtseOutSequence)
{
// Reset timer T104
FsmStopTimer(pObject);
// Send REJECT.indication to H.245 user
// CAUSE = MultiplexEntrySendReject.cause
pObject->State = MTSE_IDLE;
H245FsmConfirm(pPdu, H245_CONF_MUXTBL_SND, pObject->pInstance, pObject->dwTransId, REJECT);
}
return 0;
} // MTSE1_MultiplexEntrySendRej
/*
* NAME
* MTSE1_T104ExpiryF - timer T104 Expiry
*
*
* PARAMETERS
* INPUT pObject pointer to State Entity
* INPUT pPdu pointer to PDU
*
* RETURN VALUE
* Error return codes defined in h245com.h
*/
HRESULT MTSE1_T104ExpiryF (Object_t *pObject, PDU_t *pPdu)
{
HRESULT lError;
PDU_t * pOut;
unsigned short wNumber = (unsigned short) pObject->Key;
ASSERT(pObject->Entity == MTSE_OUT);
ASSERT(pObject->State == MTSE_WAIT);
ASSERT(pPdu == NULL);
H245TRACE(pObject->dwInst, 2, "MTSE1_T104Expiry:%d", pObject->Key);
// Send MultiplexEntrySendRelease PDU to remote peer
pOut = MemAlloc(sizeof(*pOut));
if (pOut == NULL)
{
H245TRACE(pObject->dwInst, 2,
"MTSE1_T104ExpiryF: memory allocation failed");
return H245_ERROR_NOMEM;
}
pOut->choice = indication_chosen;
pOut->u.indication.choice = mltplxEntrySndRls_chosen;
pOut->u.indication.u.mltplxEntrySndRls = pObject->u.mtse;
lError = sendPDU(pObject->pInstance, pOut);
MemFree(pOut);
// Send REJECT.indication to H.245 user
// SOURCE = PROTOCOL
pObject->State = MTSE_IDLE;
H245FsmConfirm(NULL, H245_CONF_MUXTBL_SND, pObject->pInstance, pObject->dwTransId, TIMER_EXPIRY);
return lError;
} // MTSE1_T104Expiry
/***********************************************************************
*
* IN-COMING FINITE STATE MACHINE FUNCTIONS
*
***********************************************************************/
/*
* NAME
* MTSE0_MultiplexEntrySendF - MultiplexEntrySend 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 MTSE0_MultiplexEntrySendF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MTSE_IN);
ASSERT(pObject->State == MTSE_IDLE);
H245TRACE(pObject->dwInst, 2, "MTSE0_MultiplexEntrySend:%d", pObject->Key);
pObject->byInSequence = (unsigned char)
pPdu->u.MltmdSystmCntrlMssg_rqst.u.multiplexEntrySend.sequenceNumber;
// Send TRANSFER.indication to H.245 user
pObject->State = MTSE_WAIT;
H245FsmIndication(pPdu, H245_IND_MUX_TBL, pObject->pInstance, pObject->dwTransId, FSM_OK);
return 0;
} // MTSE0_MultiplexEntrySend
/*
* NAME
* MTSE1_MultiplexEntrySendF - MultiplexEntrySend 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 MTSE1_MultiplexEntrySendF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MTSE_IN);
ASSERT(pObject->State == MTSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MTSE1_MultiplexEntrySend:%d", pObject->Key);
pObject->byInSequence = (unsigned char)
pPdu->u.MltmdSystmCntrlMssg_rqst.u.multiplexEntrySend.sequenceNumber;
#if defined(SDL_COMPLIANT)
// Send REJECT.indication to H.245 user
H245FsmIndication(pPdu, H245_IND_MTSE_RELEASE, pObject->pInstance, pObject->dwTransId, FSM_OK);
#endif
// Send TRANSFER.indication to H.245 user
H245FsmIndication(pPdu, H245_IND_MUX_TBL, pObject->pInstance, pObject->dwTransId, FSM_OK);
return 0;
} // MTSE1_MultiplexEntrySend
/*
* NAME
* MTSE1_MultiplexEntrySendReleaseF - MultiplexEntrySendRelease 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 MTSE1_MultiplexEntrySendReleaseF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MTSE_IN);
ASSERT(pObject->State == MTSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MTSE1_MultiplexEntrySendRelease:%d", pObject->Key);
// Send REJECT.indication to H.245 user
// SOURCE:=PROTOCOL
pObject->State = MTSE_IDLE;
H245FsmIndication(pPdu, H245_IND_MTSE_RELEASE, pObject->pInstance, pObject->dwTransId, FSM_OK);
return 0;
} // MTSE1_MultiplexEntrySendRelease
/*
* NAME
* MTSE1_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 MTSE1_TRANSFER_responseF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MTSE_IN);
ASSERT(pObject->State == MTSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MTSE1_TRANSFER_response:%d", pObject->Key);
// Send MultiplexEntrySendAck PDU to remote peer
pObject->State = MTSE_IDLE;
return sendPDU(pObject->pInstance, pPdu);
} // MTSE1_TRANSFER_response
/*
* NAME
* MTSE1_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 MTSE1_REJECT_requestF (Object_t *pObject, PDU_t *pPdu)
{
ASSERT(pObject->Entity == MTSE_IN);
ASSERT(pObject->State == MTSE_WAIT);
H245TRACE(pObject->dwInst, 2, "MTSE1_REJECT_request:%d", pObject->Key);
// Send MultiplexEntrySendReject PDU to remote
pObject->State = MTSE_IDLE;
return sendPDU(pObject->pInstance, pPdu);
} // MTSE1_REJECT_request

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