PtrLList<const char> * InformationPull::remoteSearchArrived (const void *pData, uint32 ui32DataLength,
uint32 &ui32RcvdRemoteSeachQuery,
const char *pszSenderNodeId)
{
// Read the message
BufferReader br (pData, ui32DataLength);
br.read32 (&ui32RcvdRemoteSeachQuery);
uint16 ui16Len;
br.read16 (&ui16Len);
char *pszGroupName = new char[ui16Len+1];
br.readBytes (pszGroupName, ui16Len);
pszGroupName[ui16Len] = '\0';
br.read16 (&ui16Len);
char *pszQuery = new char[ui16Len+1];
br.readBytes (pszQuery, ui16Len);
pszQuery[ui16Len] = '\0';
// Check the search seq id
uint32 *pUI32PrevRcvdRemoteSeachQuery = _latestSearchIdRcvdByPeer.get (pszSenderNodeId);
if (pUI32PrevRcvdRemoteSeachQuery == NULL) {
pUI32PrevRcvdRemoteSeachQuery = new uint32;
(*pUI32PrevRcvdRemoteSeachQuery) = ui32RcvdRemoteSeachQuery;
_latestSearchIdRcvdByPeer.put (pszSenderNodeId, pUI32PrevRcvdRemoteSeachQuery);
}
else {
if (SequentialArithmetic::lessThanOrEqual (ui32RcvdRemoteSeachQuery, (*pUI32PrevRcvdRemoteSeachQuery))) {
// This is either a duplicate search or an old search. Either way
// it must not be served! (Actually the "equal" case should never
// happen).
return NULL;
}
else {
(*pUI32PrevRcvdRemoteSeachQuery) = ui32RcvdRemoteSeachQuery;
}
}
// Get the IDs of the messages matching the query except the ones specified
// in ppszFilters (because they have already been sent)
char **ppszFilters = (char **) malloc (sizeof(char*) * 2);
ppszFilters[0] = (char *) pszSenderNodeId;
ppszFilters[1] = NULL;
PtrLList<const char> *pRet = _pInformationStore->getMessageIDs (pszGroupName, pszQuery);
ppszFilters[0] = NULL;
delete ppszFilters;
ppszFilters = NULL;
return pRet;
}
