Struct SeqNum

pub struct SeqNum(/* private fields */);

Sequence number of a transferred TCP segment.

Per https://tools.ietf.org/html/rfc793#section-3.3: This space ranges from 0 to 232 - 1. Since the space is finite, all arithmetic dealing with sequence numbers must be performed modulo 232. This unsigned arithmetic preserves the relationship of sequence numbers as they cycle from 2**32 - 1 to 0 again. There are some subtleties to computer modulo arithmetic, so great care should be taken in programming the comparison of such values.

For any sequence number, there are 231 numbers after it and 231 - 1 numbers before it.

Implementations

impl SeqNum

pub const fn new(x: u32) -> Self

Creates a new sequence number.

impl SeqNum

pub fn before(self, other: SeqNum) -> bool

A predicate for whether a sequence number is before the other.

Please refer to SeqNum for the defined order.

pub fn before_or_eq(self, other: SeqNum) -> bool

A predicate for whether a sequence number is equal to or before the other.

Please refer to SeqNum for the defined order.

pub fn after(self, other: SeqNum) -> bool

A predicate for whether a sequence number is after the other.

Please refer to SeqNum for the defined order.

pub fn after_or_eq(self, other: SeqNum) -> bool

A predicate for whether a sequence number is equal to or after the other.

Please refer to SeqNum for the defined order.

pub fn earliest(self, other: SeqNum) -> SeqNum

Returns the earliest sequence number between self and other.

This is equivalent to Ord::min, but keeps within the temporal instead of numeric semantics.

pub fn latest(self, other: SeqNum) -> SeqNum

Returns the latest sequence number between self and other.

This is equivalent to Ord::max, but keeps within the temporal instead of numeric semantics.

Trait Implementations

impl Add<WindowSize> for SeqNum

type Output = SeqNum

The resulting type after applying the + operator.

fn add(self, WindowSize: WindowSize) -> Self::Output

Performs the + operation.

impl Add<i32> for SeqNum

type Output = SeqNum

The resulting type after applying the + operator.

fn add(self, rhs: i32) -> Self::Output

Performs the + operation.

impl Add<u32> for SeqNum

type Output = SeqNum

The resulting type after applying the + operator.

fn add(self, rhs: u32) -> Self::Output

Performs the + operation.

impl Add<usize> for SeqNum

type Output = SeqNum

The resulting type after applying the + operator.

fn add(self, rhs: usize) -> Self::Output

Performs the + operation.

impl Clone for SeqNum

fn clone(&self) -> SeqNum

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SeqNum

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

Formats the value using the given formatter.

impl From<SeqNum> for u32

fn from(x: SeqNum) -> Self

Converts to this type from the input type.

impl From<u32> for SeqNum

fn from(x: u32) -> Self

Converts to this type from the input type.

impl PartialEq for SeqNum

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Sub<WindowSize> for SeqNum

type Output = SeqNum

The resulting type after applying the - operator.

fn sub(self, WindowSize: WindowSize) -> Self::Output

Performs the - operation.

impl Sub<i32> for SeqNum

type Output = SeqNum

The resulting type after applying the - operator.

fn sub(self, rhs: i32) -> Self::Output

Performs the - operation.

impl Sub<u32> for SeqNum

type Output = SeqNum

The resulting type after applying the - operator.

fn sub(self, rhs: u32) -> Self::Output

Performs the - operation.

impl Sub for SeqNum

type Output = i32

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self::Output

Performs the - operation.

impl Copy for SeqNum

impl Eq for SeqNum

impl StructuralPartialEq for SeqNum