Crate trippy_packet 

Packet wire format parsing and building.

The following packet are supported:

• ICMPv4
• ICMPv6
• IPv4
• IPv6
• UDP
• TCP
• ICMP extensions

Endianness

The internal representation is held in network byte order (big-endian) and all accessor methods take and return data in host byte order, converting as necessary for the given architecture.

Example

The following example parses an UDP packet and asserts its fields:

use trippy_packet::udp::UdpPacket;

let buf = hex_literal::hex!("68 bf 81 b6 00 40 ac be");
let packet = UdpPacket::new_view(&buf)?;
assert_eq!(26815, packet.get_source());
assert_eq!(33206, packet.get_destination());
assert_eq!(64, packet.get_length());
assert_eq!(44222, packet.get_checksum());
assert!(packet.payload().is_empty());

The following example builds an ICMPv4 echo request packet:

use trippy_packet::checksum::icmp_ipv4_checksum;
use trippy_packet::icmpv4::echo_request::EchoRequestPacket;
use trippy_packet::icmpv4::{IcmpCode, IcmpPacket, IcmpType};

let mut buf = [0; IcmpPacket::minimum_packet_size()];
let mut icmp = EchoRequestPacket::new(&mut buf)?;
icmp.set_icmp_type(IcmpType::EchoRequest);
icmp.set_icmp_code(IcmpCode(0));
icmp.set_identifier(1234);
icmp.set_sequence(10);
icmp.set_checksum(icmp_ipv4_checksum(icmp.packet()));
assert_eq!(icmp.packet(), &hex_literal::hex!("08 00 f3 23 04 d2 00 0a"));

Modules

checksum

Functions for calculating network checksums. Checksum implementations for ICMP & UDP over IPv4 and IPV6.

error

Packet errors.

icmp_extension

ICMP extensions.

icmpv4

ICMPv4 packets.

icmpv6

ICMPv6 packets.

ipv4

IPv4 packets.

ipv6

IPv6 packets.

tcp

TCP packets.

udp

UDP packets.

Enums

IpProtocol

The IP packet next layer protocol.

Functions

fmt_payload

Format a payload as a hexadecimal string.