Hi,
I was able to implement end-to-end acknowledgements in TOSSIM by making the following changes in the ReceiveMsg.receive() function of the MultiHopEngineM.nc routing module. Guess I wont be needing BCast or Drip now. Thanks for your time and suggestions.
if (pMsg->addr == TOS_LOCAL_ADDRESS) { // Addressed to all nodes
if ((signal Intercept.intercept[id](pMsg,&pMHMsg->data[0],PayloadLen)) == SUCCESS) {
if ((TOS_LOCAL_ADDRESS != 0) && (pMHMsg->sourceaddr != 0)) { // All nodes except node 0 forward packets and only when the source address is not node 0
pMsg = mForward(pMsg,id);
}
else if (TOS_LOCAL_ADDRESS == 0) { // If packet is received by node 0, it will call the SendMsg.send() function with the source node as the destination address
if ((signal Intercept.intercept[id](pMsg,&pMHMsg->data[0],PayloadLen)) == SUCCESS) {
if ((TOS_LOCAL_ADDRESS != 0) && (pMHMsg->sourceaddr != 0)) { // All nodes except node 0 forward packets and only when the source address is not node 0
pMsg = mForward(pMsg,id);
}
else if (TOS_LOCAL_ADDRESS == 0) { // If packet is received by node 0, it will call the SendMsg.send() function with the source node as the destination address
pMHMsg->sourceaddr = TOS_LOCAL_ADDRESS;
if (call SendMsg.send[id](pMHMsg->originaddr, pMsg->length,pMsg) !=SUCCESS) {
return FAIL;
}
}
}
if (call SendMsg.send[id](pMHMsg->originaddr, pMsg->length,pMsg) !=SUCCESS) {
return FAIL;
}
}
}
}
Regards,
Yogesh.
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