Struct etherparse::UdpHeader
source · pub struct UdpHeader {
pub source_port: u16,
pub destination_port: u16,
pub length: u16,
pub checksum: u16,
}
Expand description
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§
source§impl UdpHeader
impl UdpHeader
pub const SERIALIZED_SIZE: usize = 8usize
UdpHeader::LEN
insteadsourcepub fn without_ipv4_checksum(
source_port: u16,
destination_port: u16,
payload_length: usize
) -> Result<UdpHeader, ValueTooBigError<usize>>
pub fn without_ipv4_checksum( source_port: u16, destination_port: u16, payload_length: usize ) -> Result<UdpHeader, ValueTooBigError<usize>>
Returns an udp header for the given parameters
sourcepub fn with_ipv4_checksum(
source_port: u16,
destination_port: u16,
ip_header: &Ipv4Header,
payload: &[u8]
) -> Result<UdpHeader, ValueTooBigError<usize>>
pub fn with_ipv4_checksum( source_port: u16, destination_port: u16, ip_header: &Ipv4Header, payload: &[u8] ) -> Result<UdpHeader, ValueTooBigError<usize>>
Calculate an udp header given an ipv4 header and the payload
sourcepub fn calc_checksum_ipv4(
&self,
ip_header: &Ipv4Header,
payload: &[u8]
) -> Result<u16, ValueTooBigError<usize>>
pub fn calc_checksum_ipv4( &self, ip_header: &Ipv4Header, payload: &[u8] ) -> Result<u16, ValueTooBigError<usize>>
Calculates the upd header checksum based on a ipv4 header.
sourcepub fn calc_checksum_ipv4_raw(
&self,
source: [u8; 4],
destination: [u8; 4],
payload: &[u8]
) -> Result<u16, ValueTooBigError<usize>>
pub fn calc_checksum_ipv4_raw( &self, source: [u8; 4], destination: [u8; 4], payload: &[u8] ) -> Result<u16, ValueTooBigError<usize>>
Calculates the upd header checksum based on a ipv4 header.
sourcepub fn with_ipv6_checksum(
source_port: u16,
destination_port: u16,
ip_header: &Ipv6Header,
payload: &[u8]
) -> Result<UdpHeader, ValueTooBigError<usize>>
pub fn with_ipv6_checksum( source_port: u16, destination_port: u16, ip_header: &Ipv6Header, payload: &[u8] ) -> Result<UdpHeader, ValueTooBigError<usize>>
Calculate an udp header given an ipv6 header and the payload
sourcepub fn calc_checksum_ipv6(
&self,
ip_header: &Ipv6Header,
payload: &[u8]
) -> Result<u16, ValueTooBigError<usize>>
pub fn calc_checksum_ipv6( &self, ip_header: &Ipv6Header, payload: &[u8] ) -> Result<u16, ValueTooBigError<usize>>
Calculates the checksum of the current udp header given an ipv6 header and the payload.
sourcepub fn calc_checksum_ipv6_raw(
&self,
source: [u8; 16],
destination: [u8; 16],
payload: &[u8]
) -> Result<u16, ValueTooBigError<usize>>
pub fn calc_checksum_ipv6_raw( &self, source: [u8; 16], destination: [u8; 16], payload: &[u8] ) -> Result<u16, ValueTooBigError<usize>>
Calculates the checksum of the current udp header given an ipv6 source & destination address plus the payload.
sourcepub fn read_from_slice(slice: &[u8]) -> Result<(UdpHeader, &[u8]), LenError>
👎Deprecated since 0.10.1: Use UdpHeader::from_slice instead.
pub fn read_from_slice(slice: &[u8]) -> Result<(UdpHeader, &[u8]), LenError>
Reads a udp header from a slice directly and returns a tuple containing the resulting header & unused part of the slice.
sourcepub fn from_slice(slice: &[u8]) -> Result<(UdpHeader, &[u8]), LenError>
pub fn from_slice(slice: &[u8]) -> Result<(UdpHeader, &[u8]), LenError>
Reads a udp header from a slice directly and returns a tuple containing the resulting header & unused part of the slice.
sourcepub fn from_bytes(bytes: [u8; 8]) -> UdpHeader
pub fn from_bytes(bytes: [u8; 8]) -> UdpHeader
Read an UdpHeader from a static sized byte array.
sourcepub fn read<T: Read + Seek + Sized>(reader: &mut T) -> Result<UdpHeader, Error>
Available on crate feature std
only.
pub fn read<T: Read + Seek + Sized>(reader: &mut T) -> Result<UdpHeader, Error>
std
only.Tries to read an udp header from the current position.
sourcepub fn write<T: Write + Sized>(&self, writer: &mut T) -> Result<(), Error>
Available on crate feature std
only.
pub fn write<T: Write + Sized>(&self, writer: &mut T) -> Result<(), Error>
std
only.Write the udp header without recalculating the checksum or length.
sourcepub const fn header_len(&self) -> usize
pub const fn header_len(&self) -> usize
Length of the serialized header in bytes.
The function always returns the constant crate::UdpHeader::LEN
and exists to keep the methods consistent with other headers.
sourcepub const fn header_len_u16(&self) -> u16
pub const fn header_len_u16(&self) -> u16
Length of the serialized header in bytes in an u16
.
The function always returns the constant crate::UdpHeader::LEN_U16
and exists to keep the methods consistent with other headers.