/**
* Restart a download. Caller should call ,false first, at which point we setStarted, and ,true
* when it has actually started (a race condition means we don't setStarted at that point since
* it's possible the success/failure callback might happen first).
*
* @param redirect If non-null, the request followed a redirect.
*/
public synchronized void updateStarted(String identifier, FreenetURI redirect) {
DownloadRequestStatus status = (DownloadRequestStatus) requestsByIdentifier.get(identifier);
if (status == null) return; // Can happen during cancel etc.
status.restart(false);
if (redirect != null) {
downloadsByURI.remove(status.getURI());
status.redirect(redirect);
downloadsByURI.put(redirect, status);
}
}
