Struct TcpFlagsFilter 

pub struct TcpFlagsFilter {
    pub mask: u8,
    pub value: u8,
    pub exact: bool,
}

TCP control-flags filter.

The mask field selects which bits are tested; value is the expected result of flags & mask.

• any mode (default): at least one bit in mask must be set — (flags & mask) != 0.
• exact mode (append :exact to the flag string): all bits in mask must equal value — (flags & mask) == value.

Fields

mask: u8

Bitmask of flags to test.

value: u8

Expected value under mask (used in exact mode).

exact: bool

When true, require (flags & mask) == value; otherwise != 0.

Implementations

impl TcpFlagsFilter

pub fn parse(s: &str) -> Result<Self, FilterError>

Parse a flag specification string.

Flags are joined with +: "SYN", "SYN+ACK", "RST+FIN". Append :exact for exact-match mode (default: any).

Known flag names (case-insensitive): FIN, SYN, RST, PSH, ACK, URG, ECE, CWR.

Errors

Returns FilterError::InvalidTcpFlags for unknown names or an empty specification.

pub fn matches(self, flags: u8) -> bool

Return true if flags satisfies this filter.

Trait Implementations

impl Clone for TcpFlagsFilter

fn clone(&self) -> TcpFlagsFilter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TcpFlagsFilter

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

Formats the value using the given formatter.

impl PartialEq for TcpFlagsFilter

fn eq(&self, other: &TcpFlagsFilter) -> 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 Copy for TcpFlagsFilter

impl Eq for TcpFlagsFilter

impl StructuralPartialEq for TcpFlagsFilter