ndnsim下转发策略的研究以及架构_ptr copypacket = packet->copy();

// node self mobility
	Ptr<MobilityModel> mobility = this->m_node->GetObject<MobilityModel>();
	Vector v_NodePosition = mobility->GetPosition();
	Vector v_NodeVelocity = mobility->GetVelocity();
	Vector _n;
	_n.x=v_NodePosition.x+v_NodeVelocity.x;
	_n.y=v_NodePosition.y+v_NodeVelocity.y;
	// last hop mobility
	Ptr<Packet> p_copy = p->Copy();
	FwGeoTag geotag;
	p_copy->RemovePacketTag(geotag);
	uint32_t n_LastHopNodeId = geotag.GetNodeId();
	Vector v_LastHopPosition = geotag.GetPosition();
	Vector v_LastHopVelocity = geotag.GetVelocity();
	Vector _d2;
	_d2.x=v_LastHopPosition.x+v_LastHopVelocity.x;
	_d2.x=v_LastHopPosition.y+v_LastHopVelocity.y;
	Ptr<Packet> packet = p->Copy();
	
	try
	{
		// get last hop's node id
		uint32_t n_From = -1;
		string str_From;
		stringstream ss2;
		ss2 << f