Struct smoltcp::wire::UdpPacket

pub struct UdpPacket<T: AsRef<[u8]>> { /* fields omitted */ }

A read/write wrapper around an User Datagram Protocol packet buffer.

Methods

impl<T: AsRef<[u8]>> Packet<T>

fn new(buffer: T) -> Packet<T>

Imbue a raw octet buffer with UDP packet structure.

fn new_checked(buffer: T) -> Result<Packet<T>>

Shorthand for a combination of new and check_len.

fn check_len(&self) -> Result<()>

Ensure that no accessor method will panic if called. Returns Err(Error::Truncated) if the buffer is too short. Returns Err(Error::Malformed) if the length field has a value smaller than the header length.

The result of this check is invalidated by calling set_len.

fn into_inner(self) -> T

Consume the packet, returning the underlying buffer.

fn src_port(&self) -> u16

Return the source port field.

fn dst_port(&self) -> u16

Return the destination port field.

fn len(&self) -> u16

Return the length field.

fn checksum(&self) -> u16

Return the checksum field.

fn verify_checksum(&self, src_addr: &IpAddress, dst_addr: &IpAddress) -> bool

Validate the packet checksum.

Panics

This function panics unless src_addr and dst_addr belong to the same family, and that family is IPv4 or IPv6.

Fuzzing

This function always returns true when fuzzing.

impl<'a, T: AsRef<[u8]> + ?Sized> Packet<&'a T>

fn payload(&self) -> &'a [u8]

Return a pointer to the payload.

impl<T: AsRef<[u8]> + AsMut<[u8]>> Packet<T>

fn set_src_port(&mut self, value: u16)

Set the source port field.

fn set_dst_port(&mut self, value: u16)

Set the destination port field.

fn set_len(&mut self, value: u16)

Set the length field.

fn set_checksum(&mut self, value: u16)

Set the checksum field.

fn fill_checksum(&mut self, src_addr: &IpAddress, dst_addr: &IpAddress)

Compute and fill in the header checksum.

Panics

This function panics unless src_addr and dst_addr belong to the same family, and that family is IPv4 or IPv6.

impl<'a, T: AsRef<[u8]> + AsMut<[u8]> + ?Sized> Packet<&'a mut T>

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

Return a mutable pointer to the payload.

Trait Implementations

impl<T: Debug + AsRef<[u8]>> Debug for Packet<T>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'a, T: AsRef<[u8]> + ?Sized> Display for Packet<&'a T>

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

Formats the value using the given formatter.

impl<T: AsRef<[u8]>> PrettyPrint for Packet<T>

fn pretty_print(
    buffer: &AsRef<[u8]>,
    f: &mut Formatter,
    indent: &mut PrettyIndent
) -> Result

Write a concise, formatted representation of a packet contained in the provided buffer, and any nested packets it may contain.