private:

    struct Packet
    {
        unsigned short packetNum;
        char *data;
        Packet* next; // linked list
        Packet(int packNum, const char input[257], Packet *n)
        {
            packetNumber = packNum;
            data = new char[257]
            strcpy(data, input);
            next = n;
        }
        ~Packet()
        {
            if (data)
                delete[] data; // prevent memory leaks
        }
    };
    struct Port
    {
        unsigned short portNum; // change QuadraticProbing to use this
        Packet *head; // pointer to head of linked list
        short packetCount;
    };

    typedef QuadraticHashTable<Port> PortTable;