Struct cross_socket::packet::arp::ArpPacket

pub struct ArpPacket {
    pub hardware_type: ArpHardwareType,
    pub protocol_type: EtherType,
    pub operation: ArpOperation,
    pub sender_hw_addr: MacAddr,
    pub sender_proto_addr: Ipv4Addr,
    pub target_hw_addr: MacAddr,
    pub target_proto_addr: Ipv4Addr,
    pub payload: Vec<u8>,
}

Represents an ARP packet.

Fields

hardware_type: ArpHardwareType

protocol_type: EtherType

operation: ArpOperation

sender_hw_addr: MacAddr

sender_proto_addr: Ipv4Addr

target_hw_addr: MacAddr

target_proto_addr: Ipv4Addr

payload: Vec<u8>

Implementations

impl ArpPacket

pub fn from_bytes(packet: &[u8]) -> ArpPacket

Examples found in repository

examples/datalink_socket/arp.rs (line 43)

fn main() {
    let interface: Interface = cross_socket::interface::get_default_interface().unwrap();
    // Create new socket
    let mut socket: DataLinkSocket = DataLinkSocket::new(interface, false).unwrap();
    // Create packet info for ARP request
    let mut packet_info = PacketInfo::new();
    packet_info.src_mac = socket.interface.mac_addr.clone().unwrap();
    packet_info.dst_mac = MacAddr::zero();
    packet_info.ether_type = cross_socket::packet::ethernet::EtherType::Arp;
    packet_info.src_ip = IpAddr::V4(socket.interface.ipv4[0].addr);
    packet_info.dst_ip = socket.interface.gateway.clone().unwrap().ip_addr;

    // Build ARP packet
    let arp_packet = builder::build_arp_packet(packet_info);

    // Send ARP request to default gateway
    match socket.send_to(&arp_packet) {
        Ok(packet_len) => {
            println!("Sent {} bytes", packet_len);
        }
        Err(e) => {
            println!("Error: {}", e);
        }
    }
    let src_mac = socket.interface.mac_addr.clone().unwrap();
    // Receive packets
    println!("Waiting for ARP reply... ");
    loop {
        match socket.receive() {
            Ok(packet) => {
                let ethernet_packet = ethernet::EthernetPacket::from_bytes(&packet);
                if ethernet_packet.ethertype != cross_socket::packet::ethernet::EtherType::Arp {
                    continue;
                }
                let arp_packet = cross_socket::packet::arp::ArpPacket::from_bytes(&ethernet_packet.payload);
                if arp_packet.sender_hw_addr.address() != src_mac.address() {
                    println!("Received {} bytes from {}", packet.len(), arp_packet.sender_hw_addr.address());
                    println!("Packet: {:?}", arp_packet);
                    break;
                }
            }
            Err(e) => {
                println!("Error: {}", e);
            }
        }
    }
}

Trait Implementations

impl Clone for ArpPacket

fn clone(&self) -> ArpPacket

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ArpPacket

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.