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@ian-p-cooke
Created October 22, 2019 10:57
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// So this code looks wrong to me. What the correct way to "switch" on ethertype to get the next layer?
let packet = // some bytes from a PCAP file
let ether = EthernetPacket::new(&packet).expect("could not parse Ethernet frame");
// I don't know if the next line is valid; what if there's no Vlan layer and it doesn't parse ether.payload()?
let vlan = VlanPacket::new(ether.payload()).expect("could not parse Vlan frame");
let payload = if ether.get_ethertype() == ethernet::EtherTypes::Vlan {
vlan.payload()
} else {
ether.payload()
};
let ip = Ipv4Packet::new(payload).expect("could not parse Ipv4 frame");
let udp = UdpPacket::new(ip.payload()).expect("could not parse Udp frame");
let data = udp.payload();
// process `data`
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