For software that interfaces with Bitcoin Core via RPC, it can be useful to know whether the fRelayTxes flag is set. It could be added to `getnetworkinfo`.

public:
    CNodeRef(CNode *pnode) : _pnode(pnode) {
        LOCK(cs_vNodes);
        _pnode->AddRef();
    }
    ~CNodeRef() {
        LOCK(cs_vNodes);
        _pnode->Release();
    }
    CNode& operator *() const {return *_pnode;};
    CNode* operator ->() const {return _pnode;};
    CNodeRef& operator =(const CNodeRef& other)
    {
        if (this != &other) {
            LOCK(cs_vNodes);
            _pnode->Release();
            _pnode = other._pnode;
            _pnode->AddRef();
        }
        return *this;
    }
    CNodeRef(const CNodeRef& other):