Struct etherparse::io::LimitedReader

pub struct LimitedReader<T> { /* private fields */ }

Available on crate feature std only.

Encapsulated reader with an maximum allowed read length.

This struct is used to limit data reads by lower protocol layers (e.g. the payload_len in an IPv6Header limits how much data should be read by the following layers).

An crate::err::LenError is returned as soon as more than the maximum read len is read.

Implementations

impl<T: Read + Sized> LimitedReader<T>

pub fn new( reader: T, max_len: usize, len_source: LenSource, layer_offset: usize, layer: Layer ) -> LimitedReader<T>

Setup a new limited reader.

pub fn max_len(&self) -> usize

Maximum len that still can be read (on the current layer).

pub fn len_source(&self) -> LenSource

Source of the maximum length (used for len error).

pub fn layer(&self) -> Layer

Layer that is currently read (used for len error).

pub fn layer_offset(&self) -> usize

Offset of the layer that is currently read (used for len error).

pub fn read_len(&self) -> usize

Len that was read on the current layer.

pub fn start_layer(&mut self, layer: Layer)

Set current position as starting position for a layer.

pub fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), LimitedReadError>

Try read the given buf length from the reader.

Triggers an len error if the

pub fn take_reader(self) -> T

Consumes LimitedReader and returns the reader.

Trait Implementations

impl<T: Debug> Debug for LimitedReader<T>

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

Formats the value using the given formatter.