Struct etherparse::UdpHeader

pub struct UdpHeader {
    pub source_port: u16,
    pub destination_port: u16,
    pub length: u16,
    pub checksum: u16,
}

Udp header according to rfc768.

Fields

source_port: u16

Source port of the packet (optional).

destination_port: u16

Destination port of the packet.

length: u16

Length of the packet (includes the udp header length of 8 bytes).

checksum: u16

The checksum of the packet. The checksum is calculated from a pseudo header, the udp header and the payload. The pseudo header is composed of source and destination address, protocol number

Implementations

impl UdpHeader

pub fn without_ipv4_checksum(
    source_port: u16,
    destination_port: u16,
    payload_length: usize
) -> Result<UdpHeader, ValueError>

Returns an udp header for the given parameters

pub fn with_ipv4_checksum(
    source_port: u16,
    destination_port: u16,
    ip_header: &Ipv4Header,
    payload: &[u8]
) -> Result<UdpHeader, ValueError>

Calculate an udp header given an ipv4 header and the payload

pub fn calc_checksum_ipv4(
    &self,
    ip_header: &Ipv4Header,
    payload: &[u8]
) -> Result<u16, ValueError>

Calculates the upd header checksum based on a ipv4 header.

pub fn calc_checksum_ipv4_raw(
    &self,
    source: [u8; 4],
    destination: [u8; 4],
    payload: &[u8]
) -> Result<u16, ValueError>

Calculates the upd header checksum based on a ipv4 header.

pub fn with_ipv6_checksum(
    source_port: u16,
    destination_port: u16,
    ip_header: &Ipv6Header,
    payload: &[u8]
) -> Result<UdpHeader, ValueError>

Calculate an udp header given an ipv6 header and the payload

pub fn calc_checksum_ipv6(
    &self,
    ip_header: &Ipv6Header,
    payload: &[u8]
) -> Result<u16, ValueError>

Calculates the checksum of the current udp header given an ipv6 header and the payload.

pub fn calc_checksum_ipv6_raw(
    &self,
    source: [u8; 16],
    destination: [u8; 16],
    payload: &[u8]
) -> Result<u16, ValueError>

Calculates the checksum of the current udp header given an ipv6 source & destination address plus the payload.

pub fn read_from_slice(slice: &[u8]) -> Result<(UdpHeader, &[u8]), ReadError>

👎 Deprecated since 0.10.1:

Use UdpHeader::from_slice instead.

Reads a udp header from a slice directly and returns a tuple containing the resulting header & unused part of the slice.

pub fn from_slice(slice: &[u8]) -> Result<(UdpHeader, &[u8]), ReadError>

Reads a udp header from a slice directly and returns a tuple containing the resulting header & unused part of the slice.

pub fn from_bytes(bytes: [u8; 8]) -> UdpHeader

Read an UdpHeader from a static sized byte array.

pub fn read<T: Read + Seek + Sized>(reader: &mut T) -> Result<UdpHeader, Error>

Tries to read an udp header from the current position.

pub fn write<T: Write + Sized>(&self, writer: &mut T) -> Result<(), WriteError>

Write the udp header without recalculating the checksum or length.

pub fn header_len(&self) -> usize

Length of the serialized header in bytes.

The function always returns the constant UdpHeader::SERIALIZED_SIZE and exists to keep the methods consistent with other headers.

pub fn to_bytes(&self) -> [u8; 8]

Returns the serialized form of the header as a statically sized byte array.

Trait Implementations

impl Clone for UdpHeader

fn clone(&self) -> UdpHeader

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UdpHeader

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

Formats the value using the given formatter.

impl Default for UdpHeader

fn default() -> UdpHeader

Returns the “default value” for a type.

impl PartialEq<UdpHeader> for UdpHeader

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl SerializedSize for UdpHeader

const SERIALIZED_SIZE: usize

Size of the header itself

impl Eq for UdpHeader

impl StructuralEq for UdpHeader

impl StructuralPartialEq for UdpHeader