Every federation peer-to-peer call now prefers FIPS (direct ULA dial
over `fips0`, ~LAN latency) and falls back to Tor only on network
failure. Per-method ed25519 signatures are preserved on both
transports so authenticity doesn't change.
- fips::dial::PeerRequest — fluent builder that owns transport
selection. Returns the Response plus the TransportKind that carried
it, so handlers can log or expose which path was used.
- fips::dial::is_service_active — free-standing async probe used by
migration sites (the transport::fips::is_available cache is keyed
to a `&self`, not usable from static contexts).
- federation/sync.rs: sync_with_peer + deploy_to_peer drop the
hand-rolled reqwest::Proxy dance, call PeerRequest instead.
- federation/invites.rs: notify_join takes the remote's fips_npub
(already parsed out of the invite code since v1.4) and dials over
FIPS when available. The "peer-joined" signature domain is
unchanged.
- api/rpc/federation/handlers.rs: DID rotation broadcast loops over
federated peers through PeerRequest; the per-peer result payload
gains a `transport` field so the UI can surface mesh vs. onion.
- api/rpc/tor/mod.rs: onion-address-change propagation is now the
most useful FIPS-first call — fips_npub is stable across onion
rotation, so peers get the new address even when the old onion
is already dead.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Wires the FIPS transport end-to-end so peer-to-peer calls can reach
other nodes over the mesh without going through Tor:
- fips::dial — raw RFC 1035 DNS client (zero new deps) that queries the
FIPS daemon's local resolver at 127.0.0.1:5354 for `<npub>.fips` AAAA
records. Exposes peer_base_url(npub) → "http://[fd9d:…]:5679" plus a
reqwest client factory for call-site migrations.
- fips::iface — parses /proc/net/if_inet6 to find the ULA address on
`fips0`. Runs under the archipelago service user without extra caps.
- FipsTransport::is_available() — live probe of archipelago-fips and
upstream fips.service via `systemctl is-active`, cached 10s so the
send hot path doesn't thrash DBus.
- FipsTransport::send() — resolve npub, POST TransportMessage JSON to
the peer's /transport/inbox. Today /transport/inbox isn't wired on
the receive side, so call-site migrations use dial::peer_base_url
directly against the already-signed endpoints (/rpc/v1,
/archipelago/node-message, /content/*). The inbox handler lands as
part of the Settings/transport work.
- server::serve_with_shutdown — takes an optional peer_addr and spawns
a second listener bound specifically to the fips0 ULA on port 5679.
The peer listener applies is_peer_allowed_path() — a whitelist of
endpoints that already do per-request signature auth — and returns
404 for everything else. Shutdown cascades to both listeners via a
watch channel; 5s drain window preserved.
- main.rs — if fips0 has a ULA at startup, pass the peer SocketAddr to
serve_with_shutdown; otherwise run the main listener only.
Security: the peer listener is bound to the fips0 ULA directly, not
wildcard, so it's unreachable from WAN IPv6. The path whitelist limits
exposure to endpoints whose handlers verify ed25519 signatures or
federation DID headers server-side.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
