void doFetch(std::list<RequestInfo>::iterator iter, ServiceIterator::ErrorType reason) {
/* FIXME: this does not acquire a lock--which will cause a problem
* if this class is destructed while we are executing doFetch.
*/
RequestInfo &info = *iter;
if (cleanup || !info.serviter) {
SILOG(transfer,error,"None of the services registered for " <<
info.fileId.uri() << " were successful.");
CacheLayer::getData(info.fileId, info.range, info.callback);
boost::unique_lock<boost::mutex> transfer_lock(mActiveTransferLock);
mActiveTransfers.erase(iter);
mCleanupCV.notify_one();
return;
}
URI lookupUri;
std::tr1::shared_ptr<DownloadHandler> handler;
ServiceParams params;
if (mService->getNextProtocol(info.serviter,reason,info.fileId.uri(),lookupUri,params,handler)) {
// info IS GETTING FREED BEFORE download RETURNS TO SET info.httpreq!!!!!!!!!
info.httpreq = DownloadHandler::TransferDataPtr();
handler->download(&info.httpreq, params, lookupUri, info.range,
std::tr1::bind(&NetworkCacheLayer::httpCallback, this, iter, _1, _2));
// info may be deleted by now (not so unlikely as it sounds -- it happens if you connect to localhost)
} else {
info.serviter = NULL; // deleted.
doFetch(iter, ServiceIterator::UNSUPPORTED);
}
}
void doNameLookup(const Callback &cb, const URI &origNamedUri, ServiceIterator *services, ServiceIterator::ErrorType reason) {
URI lookupUri;
ServiceParams params;
std::tr1::shared_ptr<NameLookupHandler> handler;
if (mNameServ->getNextProtocol(services,reason,origNamedUri,lookupUri,params,handler)) {
/// FIXME: Need a way of aborting a name lookup that is taking too long.
handler->nameLookup(NULL, lookupUri,
std::tr1::bind(&NameLookupManager::gotNameLookup, this, cb, origNamedUri, services, _1, _2, _3));
} else {
SILOG(transfer,warn,"None of the services registered for " <<
origNamedUri << " were successful for NameLookup.");
/// Hashed download.
if (mDownloadServ) {
mDownloadServ->lookupService(origNamedUri.context(),
std::tr1::bind(&NameLookupManager::hashedDownload, this, cb, origNamedUri, _1));
} else {
cb(origNamedUri, NULL);
}
return;
}
}