Enum TcpState 

pub enum TcpState {
    Closed,
    SynSent,
    SynReceived,
    Established,
    FinWait1,
    FinWait2,
    CloseWait,
    Closing,
    LastAck,
    TimeWait,
    Unknown,
}

TCP connection state as defined in RFC 793.

Variants

Closed

Initial state, connection not yet established

SynSent

Connection attempt sent, waiting for ACK

SynReceived

Received SYN, sent SYN+ACK, waiting for ACK

Established

Connection established, data transfer possible

FinWait1

Application initiated close, waiting for ACK

FinWait2

Received ACK for FIN, waiting for remote FIN

CloseWait

Received remote FIN, waiting for application to close

Closing

Application closed, sent FIN, waiting for ACK

LastAck

Sent FIN and received ACK, waiting for remote FIN

TimeWait

Received FIN and sent ACK, waiting for application to close

Unknown

Unknown or invalid state

Implementations

impl TcpState

pub fn color(&self) -> &str

Get the color name for UI rendering of this state.

Returns a color name that can be used with ratatui’s Color.

pub fn short_name(&self) -> &str

Get a short display name for the state.

pub fn short_name_3char(&self) -> &str

Get an ultra-short display name (3 characters max) for compact UI.

pub fn transition(&self, syn: bool, ack: bool, fin: bool, rst: bool) -> Self

Determine the next state based on current state and TCP flags.

This implements a simplified TCP state machine transition logic.

pub fn from_flags(syn: bool, ack: bool, fin: bool, rst: bool) -> Self

Create a TcpState from TCP flags directly.

This is a simpler alternative that maps flag combinations to states without full state machine tracking.

Note: ACK-only packets (ack=true, syn=false, fin=false) indicate an established connection, which handles the mid-connection monitoring scenario where we start tracking after the handshake.

Trait Implementations

impl Clone for TcpState

fn clone(&self) -> TcpState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TcpState

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

Formats the value using the given formatter.

impl PartialEq for TcpState

fn eq(&self, other: &TcpState) -> 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 TcpState

impl Eq for TcpState

impl StructuralPartialEq for TcpState