Parse pcapng file

Libpcap can be used to parse pcapng file, but only provides features compatible to pcap file (Please refer pcapng wiki).

PcapPlusPlus is a better choice and it can parse more information about the file and packet (e.g., the comment field of every packet). The following is a simple program which prints the metadata of pcapng file and the first 10 packets’ comments:

#include <iostream>
#include <PcapFileDevice.h>

int
main()
{
    std::cout << pcap_lib_version() << '\n';
    pcpp::PcapNgFileReaderDevice input_file("/Users/nanxiao/Downloads/capture.pcapng");
    if (input_file.open()) {
        std::cout << "Open successfully\n";
    } else {
        std::cerr << "Open failed\n";
        return 1;
    }

    std::cout << input_file.getOS() << '\n';
    std::cout << input_file.getHardware() << '\n';
    std::cout << input_file.getCaptureApplication() << '\n';
    std::cout << input_file.getCaptureFileComment() << '\n';

    pcpp::RawPacket packet;
    std::string comment;
    for (size_t i = 1; i < 10; i++)
    {
        if (input_file.getNextPacket(packet, comment)) {
            std::cout << i << ":" << comment << '\n';
        } else {
            std::cerr << "Get packet failed\n";
            return 1;
        }
    }

}

P.S., the code can be downloaded here.