Struct RetryConfig 

pub struct RetryConfig {
    pub max_retries: u32,
    pub initial_delay_ms: u64,
    pub max_delay_ms: u64,
    pub backoff_multiplier: f32,
    pub outbox_max_lifetime_ms: u64,
    pub pending_message_max_lifetime_ms: u64,
    pub edge_driven_unreachable_dm: bool,
}

Configuration for retry behavior.

Fields

max_retries: u32

Maximum number of retries per message.

initial_delay_ms: u64

Initial retry delay in milliseconds.

max_delay_ms: u64

Maximum retry delay in milliseconds.

backoff_multiplier: f32

Backoff multiplier for exponential backoff.

outbox_max_lifetime_ms: u64

Maximum lifetime for messages in the outbox (milliseconds).

pending_message_max_lifetime_ms: u64

Maximum lifetime for messages waiting on MLS session establishment.

edge_driven_unreachable_dm: bool

Opt-in: treat a durably-unreachable direct message as EDGE-DRIVEN once its escalating reachability probe has run a few times, instead of the default of probing it forever at the 15s->600s cap on every carrier.

Default false preserves the documented contract (a parked message “never goes fully quiet”; see docs/message-delivery.md) and every existing native/third-party app’s behaviour is unchanged. When true, after a bounded number of probes the message stops being timed-probed and rests in the outbox, re-driven only when the peer next proves reachable (an inbound frame or presence-online edge flushes it). It also lets a restart skip re-driving a durably-failing backlog.

This trades the SDK’s “self-recovers even for a silent returning peer with no presence” guarantee for zero steady-state relay traffic to gone peers. It is correct for deployments whose peers always interact or advertise presence on return (e.g. a machine-to-machine capability exchange), and MUST NOT be enabled for consumers that rely on the timed probe as their only recovery path.

Implementations

impl RetryConfig

pub fn delay_for_retry(&self, retry_count: u32) -> u64

Calculates the backoff delay for the given retry count: initial_delay_ms * backoff_multiplier^retry_count, clamped to max_delay_ms.

Computed in f64 and clamped before the integer cast, so it is total over all configs: f64::min returns the other operand when one side is NaN (NaN/infinity collapse to max_delay_ms), and float-to-int as casts saturate.

Trait Implementations

impl Clone for RetryConfig

fn clone(&self) -> RetryConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RetryConfig

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

Formats the value using the given formatter.

impl Default for RetryConfig

fn default() -> RetryConfig

Returns the “default value” for a type.