Struct FlowConfig 

pub struct FlowConfig {

    pub tcp_established_timeout: Duration,
    pub tcp_half_open_timeout: Duration,
    pub tcp_time_wait_timeout: Duration,
    pub udp_timeout: Duration,
    pub max_reassembly_buffer: usize,
    pub max_ooo_fragments: usize,
    pub eviction_interval: Duration,
    pub track_max_packet_len: bool,
    pub track_max_flow_len: bool,
    pub memory_budget: Option<usize>,
    pub spill_dir: Option<PathBuf>,
    pub verbose: bool,
    pub store_packet_indices: bool,
    pub progress_interval: usize,
}

Configuration for the flow extraction engine.

Controls timeouts, buffer limits, and eviction thresholds for conversation tracking and TCP stream reassembly.

Fields

tcp_established_timeout: Duration

Timeout for established TCP connections (default: 86400s / 24h).

tcp_half_open_timeout: Duration

Timeout for half-open TCP connections (SYN sent, no ACK) (default: 5s).

tcp_time_wait_timeout: Duration

Timeout for TCP TIME_WAIT state (default: 120s).

udp_timeout: Duration

Timeout for UDP pseudo-conversations (default: 120s).

max_reassembly_buffer: usize

Maximum reassembly buffer size per direction per flow (default: 16 MB).

max_ooo_fragments: usize

Maximum number of out-of-order fragments per direction (default: 100).

eviction_interval: Duration

Interval between idle conversation eviction sweeps (default: 30s).

track_max_packet_len: bool

Track maximum packet length per direction (default: false).

track_max_flow_len: bool

Track maximum flow length per direction (default: false).

memory_budget: Option<usize>

Total RAM budget for flow extraction (None = unlimited). When set, reassembly buffers will be spilled to disk when exceeded.

spill_dir: Option<PathBuf>

Directory for spill files (None = system temp dir).

verbose: bool

Print progress feedback to stderr during flow extraction (default: false).

store_packet_indices: bool

Store per-flow packet indices (default: true). Disable for large captures to save memory (~8 bytes per packet).

progress_interval: usize

Number of packets between progress reports when verbose is enabled (default: 100_000).

Trait Implementations

impl Clone for FlowConfig

fn clone(&self) -> FlowConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FlowConfig

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

Formats the value using the given formatter.

impl Default for FlowConfig

fn default() -> Self

Returns the “default value” for a type.