Enum PortState 

#[non_exhaustive]
pub enum PortState {
    ClosedFiltered,
    Filtered,
    Unfiltered,
    Closed,
    OpenFiltered,
    Open,
}

The reachability state of a specific port.

The order of these variants is strictly defined from least definitive to most definitive. This allows Port::merge() to automatically upgrade ambiguous states into concrete ones using standard Ord comparisons.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ClosedFiltered

State is ambiguous; port is either closed or filtered (e.g., IP ID idle scan).

Filtered

Packets are being dropped silently by a firewall. We received no response.

Unfiltered

Target is accessible, but we cannot determine if it is open or closed (e.g., TCP ACK scan).

Closed

Actively rejecting connections (e.g., TCP RST received).

OpenFiltered

State is ambiguous; port might be open, or packets might be silently dropped (e.g., UDP scan).

Open

Actively accepting connections (e.g., TCP SYN/ACK received).

Trait Implementations

impl Clone for PortState

fn clone(&self) -> PortState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PortState

impl Debug for PortState

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

Formats the value using the given formatter.

impl Eq for PortState

impl Ord for PortState

fn cmp(&self, other: &PortState) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for PortState

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for PortState

fn partial_cmp(&self, other: &PortState) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for PortState