IQ httpInfoIQ = new IQ(IQ.Type.set);
httpInfoIQ.setTo(initiator);
// FIXME this seems like gross misuse of error... make a custom packet extension.
httpInfoIQ.setError(new PacketError(PacketError.Condition.redirect, PacketError.Type.modify, transferPostUrl) );
throw new FileTransferRejectedException("HTTP client resuming via upload servlet");