Struct netstack3_base::SegmentHeader

pub struct SegmentHeader {
    pub seq: SeqNum,
    pub ack: Option<SeqNum>,
    pub wnd: UnscaledWindowSize,
    pub control: Option<Control>,
    pub options: Options,
}

All non-data portions of a TCP segment.

Fields

seq: SeqNum

The sequence number of the segment.

ack: Option<SeqNum>

The acknowledge number of the segment. None if not present.

wnd: UnscaledWindowSize

The advertised window size.

control: Option<Control>

The control flag of the segment.

options: Options

Options carried by this segment.

Implementations

impl SegmentHeader

pub fn len(&self, payload_len: usize) -> u32

Returns the length of the segment in sequence number space.

Per RFC 793 (https://tools.ietf.org/html/rfc793#page-25): SEG.LEN = the number of octets occupied by the data in the segment (counting SYN and FIN)

pub fn from_builder<A: IpAddress>( builder: &TcpSegmentBuilder<A>, ) -> Result<Self, MalformedFlags>

Create a SegmentHeader from the provided builder and data length. The options will be set to their default values.

pub fn from_builder_options<A: IpAddress>( builder: &TcpSegmentBuilder<A>, options: Options, ) -> Result<Self, MalformedFlags>

Create a SegmentHeader from the provided builder, options, and data length.

Trait Implementations

impl Clone for SegmentHeader

fn clone(&self) -> SegmentHeader

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SegmentHeader

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

Formats the value using the given formatter.

impl PartialEq for SegmentHeader

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<A> TryFrom<&TcpSegmentBuilder<A>> for SegmentHeader

where A: IpAddress,

type Error = MalformedFlags

The type returned in the event of a conversion error.

fn try_from(from: &TcpSegmentBuilder<A>) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a, A, I> TryFrom<&TcpSegmentBuilderWithOptions<A, RecordSequenceBuilder<TcpOption<'a>, I>>> for SegmentHeader

where A: IpAddress, I: Iterator + Clone, I::Item: Borrow<TcpOption<'a>>,

type Error = MalformedFlags

The type returned in the event of a conversion error.

fn try_from( from: &TcpSegmentBuilderWithOptions<A, OptionSequenceBuilder<TcpOption<'a>, I>>, ) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for SegmentHeader

impl Eq for SegmentHeader

impl StructuralPartialEq for SegmentHeader