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StaticUnderlayDiscovery

scion_stack::underlays::discovery

Struct StaticUnderlayDiscovery 

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pub struct StaticUnderlayDiscovery { /* private fields */ }
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Implementation of the UnderlayDiscovery trait backed by a static, in-memory topology.

Unlike the endhost-API-backed discovery used by ScionStackBuilder::build, this does not contact an endhost API and runs no background task. It is intended for fully-local UDP stacks where the topology (SCION routers and the interfaces they serve) is known up front, e.g. from configuration.

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impl StaticUnderlayDiscovery

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pub fn new(routers: impl IntoIterator<Item = StaticUdpRouter>) -> Self

Creates a new static underlay discovery from the given SCION routers.

Routers are grouped by ISD-AS into a single UnderlayInfo::Udp entry per ISD-AS, and a direct next-hop lookup is built mapping each served PathInterface to the router’s internal interface.

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impl UnderlayDiscovery for StaticUnderlayDiscovery

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fn underlays(&self, isd_as: IsdAsn) -> Vec<(IsdAsn, UnderlayInfo)>

Returns discovered underlays that match the given ISD-AS. Wildcard ISD-ASes are supported. The underlays are returned in the order of priority.
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fn isd_ases(&self) -> HashSet<IsdAsn>

Returns the set of ISD-ASes for which underlays are available.
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fn resolve_udp_underlay_next_hop( &self, interface: PathInterface, ) -> Option<SocketAddr>

Resolves the next hop for the given ISD-AS and interface ID.

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