Q:

copy libpcap packet data from const u_char* to another const u_char*

I am trying to make a deep copy of const u_char* to another const u_char* in c/++.
I have the following code - 
void packetHandler(u_char *userData, const struct pcap_pkthdr* pkthdr, const u_char* packet) 
{
    if(packet!=NULL)
    {
        int length = strlen((char*)packet);
        const u_char* newPacket = new u_char[length];
        memcpy((u_char*)newPacket, packet, length);
        cout<<"Packet - "<<packet<<endl;
        cout<<"New Packet - "<<newPacket<<endl;
        packets.push_back(newPacket);
        //processPacket(packet);
    }
}

But I dont think that it is getting copied right, coz the result of operations on the 2 copies are different.
The data has to be in const u_char* form as dictated by pcap loop method signature. 
I am testing with a larger sample of the type [obtained using tcpdump], where each packet is read sequentially and I receive a const u_char* pointer to it - 
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What I am trying to do is load all the packets from the pcap file into a memory buffer to go high speed testing which can be slow if each packet is read from the file.
Any pointers will be really appreciated.

A:

I was able to figure out my problem. The length was not right. I should have used the length in the packet header. Either way, I feel using strlen is not the right choice for unsigned char.
I figured it out using another post - vector of packets in libpcap

