Struct ServiceRecord 

pub struct ServiceRecord {
    pub announced_prefix: Name,
    pub node_name: Name,
    pub freshness_ms: u64,
    pub capabilities: u8,
}

A service advertisement record.

Produced by a prefix producer to announce its prefix to neighbouring nodes. Consumed by any node doing prefix browsability.

Fields

announced_prefix: Name

The prefix being announced (e.g. /ndn/sensor/temp).

node_name: Name

The producer’s NDN node name.

freshness_ms: u64

How long (ms) this record should be considered fresh. 0 = rely on NDN FreshnessPeriod only.

capabilities: u8

Capability flags (same encoding as HelloPayload capabilities).

Implementations

impl ServiceRecord

pub fn new(announced_prefix: Name, node_name: Name) -> Self

Create a minimal record with default freshness (30 s) and no flags.

pub fn encode(&self) -> Bytes

Encode as a content TLV blob.

pub fn decode(b: &[u8]) -> Option<Self>

Decode from a content TLV blob produced by [encode].

pub fn make_name(&self, timestamp_ms: u64) -> Name

Construct the NDN name for this record.

timestamp_ms should be a monotonically increasing value (e.g. milliseconds since Unix epoch) so that CanBePrefix=true Interests retrieve the freshest record.

pub fn build_data(&self, timestamp_ms: u64) -> Bytes

Build a complete NDN Data packet for this record.

The Data name follows the naming convention above; the Content is the encoded ServiceRecord. FreshnessPeriod is set to freshness_ms.

pub fn from_data_packet(raw: &Bytes) -> Option<Self>

Extract and decode the ServiceRecord from a raw NDN Data packet.

Returns None if the packet is not a service record Data or the content cannot be decoded.

Trait Implementations

impl Clone for ServiceRecord

fn clone(&self) -> ServiceRecord

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ServiceRecord

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

Formats the value using the given formatter.

impl PartialEq for ServiceRecord

fn eq(&self, other: &ServiceRecord) -> 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 StructuralPartialEq for ServiceRecord