hopr_network_types::session::state

Struct SessionConfig

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pub struct SessionConfig {
    pub max_buffered_segments: usize,
    pub acknowledged_frames_buffer: usize,
    pub frame_expiration_age: Duration,
    pub rto_base_receiver: Duration,
    pub rto_base_sender: Duration,
    pub backoff_base: f64,
    pub rto_jitter: f64,
    pub enabled_features: HashSet<SessionFeature>,
}
Expand description

Configuration of Session protocol.

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§max_buffered_segments: usize

Maximum number of buffered segments.

The value should be large enough to accommodate segments for an at least frame_expiration_age period, considering the expected maximum bandwidth.

Default is 50,000.

§acknowledged_frames_buffer: usize

Size of the buffer for acknowledged frame IDs.

The value should be large enough so that the buffer can accommodate segments for an at least frame_expiration_age period, given the expected maximum bandwidth.

The minimum value is 1, default is 1024.

§frame_expiration_age: Duration

Specifies the maximum period a frame should be kept by the sender and asked for retransmission by the recipient.

Default is 30 seconds.

§rto_base_receiver: Duration

If a frame is incomplete (on the receiver), retransmission requests will be made with exponential backoff starting at this initial retry timeout (RTO).

Requests will be sent until frame_expiration_age is reached.

NOTE: this value should be offset from rto_base_sender, so that the receiver’s retransmission requests are interleaved with the sender’s retransmissions.

In most cases, you want to 0 < rto_base_receiver < rto_base_sender < frame_expiration_age.

Default is 1 second.

§rto_base_sender: Duration

If a frame is unacknowledged (on the sender), entire frame retransmissions will be made with exponential backoff starting at this initial retry timeout (RTO).

Frames will be retransmitted until frame_expiration_age is reached.

NOTE: this value should be offset from rto_base_receiver, so that the receiver’s retransmission requests are interleaved with the sender’s retransmissions.

In most cases, you want to 0 < rto_base_receiver < rto_base_sender < frame_expiration_age.

Default is 1.5 seconds.

§backoff_base: f64

Base for the exponential backoff on retries.

Default is 2.

§rto_jitter: f64

Standard deviation of a Gaussian jitter applied to rto_base_receiver and rto_base_sender. Must be between 0 and 0.25.

Default is 0.05

§enabled_features: HashSet<SessionFeature>

Set of features that should be enabled on this Session.

Default is SessionFeature::default_features.

Trait Implementations§

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impl Clone for SessionConfig

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fn clone(&self) -> SessionConfig

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SessionConfig

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

Formats the value using the given formatter. Read more
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impl Default for SessionConfig

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fn default() -> Self

Return SessionConfig { max_buffered_segments: 50_000, acknowledged_frames_buffer: 1024, frame_expiration_age: Duration::from_secs(30), rto_base_receiver: Duration::from_millis(1000), rto_base_sender: Duration::from_millis(1500), backoff_base: 2.0, rto_jitter: 0.05, enabled_features: HashSet :: from_iter(SessionFeature :: default_features()) }

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impl Validate for SessionConfig

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fn validate(&self) -> Result<(), ValidationErrors>

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impl<'v_a> ValidateArgs<'v_a> for SessionConfig

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type Args = ()

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fn validate_with_args(&self, args: Self::Args) -> Result<(), ValidationErrors>

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