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ACRetransmission.c
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ACRetransmission.c
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/*******************************************************************************************
* Copyright (c) 2006-7 Laboratorio di Sistemi di Elaborazione e Bioingegneria Informatica *
* Universita' Campus BioMedico - Italy *
* *
* This program is free software; you can redistribute it and/or modify it under the terms *
* of the GNU General Public License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT ANY *
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A *
* PARTICULAR PURPOSE. See the GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License along with this *
* program; if not, write to the: *
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, *
* MA 02111-1307, USA. *
* *
* In addition, as a special exception, the copyright holders give permission to link the *
* code of portions of this program with the OpenSSL library under certain conditions as *
* described in each individual source file, and distribute linked combinations including *
* the two. You must obey the GNU General Public License in all respects for all of the *
* code used other than OpenSSL. If you modify file(s) with this exception, you may *
* extend this exception to your version of the file(s), but you are not obligated to do *
* so. If you do not wish to do so, delete this exception statement from your version. *
* If you delete this exception statement from all source files in the program, then also *
* delete it here. *
*
* --------------------------------------------------------------------------------------- *
* Project: Capwap *
* *
* Author : Ludovico Rossi ([email protected]) *
* Del Moro Andrea ([email protected]) *
* Giovannini Federica ([email protected]) *
* Massimo Vellucci ([email protected]) *
* Mauro Bisson ([email protected]) *
*******************************************************************************************/
#include "CWAC.h"
#ifdef DMALLOC
#include "../dmalloc-5.5.0/dmalloc.h"
#endif
/*
* CW_FREE_WTP_MSG_ARRAY - free the array of the messages
* to be sent relative to the WTP with the specified index.
*
* ref -> BUG ML12
* 20/10/2009 - Donato Capitella
*/
static void inline CW_FREE_WTP_MSG_ARRAY(int WTPIndex) {
int i;
for(i = 0; i < gWTPs[WTPIndex].messagesCount; i++) {
CW_FREE_OBJECT(gWTPs[WTPIndex].messages[i].msg);
}
CW_FREE_OBJECT(gWTPs[WTPIndex].messages);
gWTPs[WTPIndex].messagesCount = 0;
}
CWBool CWACSendFragments(int WTPIndex) {
int i;
if(gWTPs[WTPIndex].messages == NULL) return CWErrorRaise(CW_ERROR_WRONG_ARG, NULL);
for(i = 0; i < gWTPs[WTPIndex].messagesCount; i++) {
#ifdef CW_NO_DTLS
if(!CWNetworkSendUnsafeUnconnected( gWTPs[WTPIndex].socket,
&gWTPs[WTPIndex].address,
gWTPs[WTPIndex].messages[i].msg,
gWTPs[WTPIndex].messages[i].offset) ) {
#else
if(!(CWSecuritySend(gWTPs[WTPIndex].session, gWTPs[WTPIndex].messages[i].msg, gWTPs[WTPIndex].messages[i].offset))) {
#endif
return CW_FALSE;
}
}
/*
* BUG - ML12
*
* 20/10/2009 - Donato Capitella
*/
CW_FREE_WTP_MSG_ARRAY(WTPIndex);
CWLog("Message Sent\n");
return CW_TRUE;
}
CWBool CWACResendAcknowledgedPacket(int WTPIndex) {
if(!CWACSendFragments(WTPIndex))
return CW_FALSE;
CWThreadSetSignals(SIG_BLOCK, 1, CW_SOFT_TIMER_EXPIRED_SIGNAL);
if(!(CWTimerRequest(gCWRetransmitTimer, &(gWTPs[WTPIndex].thread), &(gWTPs[WTPIndex].currentPacketTimer), CW_SOFT_TIMER_EXPIRED_SIGNAL))) {
return CW_FALSE;
}
CWThreadSetSignals(SIG_UNBLOCK, 1, CW_SOFT_TIMER_EXPIRED_SIGNAL);
return CW_TRUE;
}
__inline__ CWBool CWACSendAcknowledgedPacket(int WTPIndex, int msgType, int seqNum) {
gWTPs[WTPIndex].retransmissionCount = 0;
gWTPs[WTPIndex].isRetransmitting = CW_TRUE;
gWTPs[WTPIndex].responseType=msgType;
gWTPs[WTPIndex].responseSeqNum=seqNum;
// CWDebugLog("~~~~~~seq num in Send: %d~~~~~~", gWTPs[WTPIndex].responseSeqNum);
return CWACResendAcknowledgedPacket(WTPIndex);
}
void CWACStopRetransmission(int WTPIndex) {
if(gWTPs[WTPIndex].isRetransmitting) {
int i;
CWDebugLog("Stop Retransmission");
gWTPs[WTPIndex].isRetransmitting = CW_FALSE;
CWThreadSetSignals(SIG_BLOCK, 1, CW_SOFT_TIMER_EXPIRED_SIGNAL);
if(!CWTimerCancel(&(gWTPs[WTPIndex].currentPacketTimer)))
{CWDebugLog("Error Cancelling a Timer... possible error!");}
CWThreadSetSignals(SIG_UNBLOCK, 1, CW_SOFT_TIMER_EXPIRED_SIGNAL);
gWTPs[WTPIndex].responseType=UNUSED_MSG_TYPE;
gWTPs[WTPIndex].responseSeqNum=0;
for(i = 0; i < gWTPs[WTPIndex].messagesCount; i++) {
CW_FREE_PROTOCOL_MESSAGE(gWTPs[WTPIndex].messages[i]);
}
CW_FREE_OBJECT(gWTPs[WTPIndex].messages);
// CWDebugLog("~~~~~~ End of Stop Retransmission");
}
}