{

// open a pcap file for reading

pcpp::PcapFileReaderDevice reader("1_packet.pcap");

if (!reader.open())

{

std::cerr << "Error opening the pcap file" << std::endl;

return 1;

}

// read the first (and only) packet from the file

pcpp::RawPacket rawPacket;

if (!reader.getNextPacket(rawPacket))

{

std::cerr << "Couldn't read the first packet in the file" << std::endl;

return 1;

}

// parse the raw packet into a parsed packet

pcpp::Packet parsedPacket(&rawPacket);

// verify the packet is IPv4

if (parsedPacket.isPacketOfType(pcpp::IPv4))

{

// extract source and dest IPs

pcpp::IPv4Address srcIP = parsedPacket.getLayerOfType<pcpp::IPv4Layer>()->getSrcIPv4Address();

pcpp::IPv4Address destIP = parsedPacket.getLayerOfType<pcpp::IPv4Layer>()->getDstIPv4Address();

// print source and dest IPs

std::cout << "Source IP is '" << srcIP << "'; "

<< "Dest IP is '" << destIP << "'" << std::endl;

}

// close the file

reader.close();

return 0;