Struct Ipv4PacketMut 

pub struct Ipv4PacketMut<'a> { /* private fields */ }

A structurally validated mutable RFC 791 packet view.

Implementations

impl<'a> Ipv4PacketMut<'a>

pub fn icmpv4_mut(&mut self) -> Result<Option<Icmpv4MessageMut<'_>>, ParseError>

Parses mutable ICMPv4 only when this is an unfragmented ICMP packet.

pub fn udp_mut(&mut self) -> Result<Option<UdpDatagramMut<'_>>, ParseError>

Parses mutable UDP only when this is an unfragmented UDP packet.

pub fn tcp_mut(&mut self) -> Result<Option<TcpSegmentMut<'_>>, ParseError>

Parses mutable TCP only when this is an unfragmented TCP packet.

impl<'a> Ipv4PacketMut<'a>

pub fn parse(bytes: &'a mut [u8]) -> Result<Self, ParseError>

Validates RFC 791 structural bounds and excludes trailing bytes.

pub fn dscp_ecn(&self) -> u8

Returns the combined DSCP/ECN octet.

pub fn total_length(&self) -> u16

Returns the RFC 791 total-length field.

pub fn identification(&self) -> u16

Returns the identification field.

pub fn flags_fragment_offset(&self) -> u16

Returns raw flags and fragment offset.

pub fn ttl(&self) -> u8

Returns the time-to-live field.

pub fn protocol(&self) -> Ipv4Protocol

Returns the protocol value, including unknown values.

pub fn header_checksum(&self) -> u16

Returns the encoded header checksum.

pub fn source(&self) -> Ipv4Address

Returns the source address.

pub fn destination(&self) -> Ipv4Address

Returns the destination address.

pub fn options(&self) -> &[u8]

Returns option bytes included by IHL.

pub fn payload(&self) -> &[u8]

Returns payload bytes, which are not header-checksum covered.

pub fn options_mut(&mut self) -> &mut [u8]

Returns mutable options; this does not update the header checksum.

pub fn payload_mut(&mut self) -> &mut [u8]

Returns mutable payload bytes, which are not header-checksum covered.

pub fn as_bytes(&self) -> &[u8]

Returns the represented packet bytes.

pub fn as_bytes_mut(&mut self) -> &mut [u8]

Returns all represented bytes mutably.

pub fn set_dscp_ecn(&mut self, v: u8)

Replaces DSCP/ECN without updating the checksum.

pub fn set_identification(&mut self, v: u16)

Replaces identification without updating the checksum.

pub fn set_flags_fragment_offset(&mut self, v: u16)

Replaces raw flags and fragment offset without updating the checksum.

pub fn set_ttl(&mut self, v: u8)

Replaces TTL without updating the checksum.

pub fn set_protocol(&mut self, v: Ipv4Protocol)

Replaces protocol without updating the checksum.

pub fn set_header_checksum(&mut self, v: u16)

Replaces the encoded checksum directly.

pub fn set_source(&mut self, v: Ipv4Address)

Replaces source without updating the checksum.

pub fn set_destination(&mut self, v: Ipv4Address)

Replaces destination without updating the checksum.

pub fn update_header_checksum(&mut self)

Recomputes and writes the checksum across the full IHL, including options.

pub fn checksum_is_valid(&self) -> bool

Checks the current checksum across the full IHL.

Trait Implementations

impl<'a> Debug for Ipv4PacketMut<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for Ipv4PacketMut<'a>

impl<'a> PartialEq for Ipv4PacketMut<'a>

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<'a> StructuralPartialEq for Ipv4PacketMut<'a>