Add an operator-visible Draining phase on daemon shutdown. On the
shutdown signal the node broadcasts Disconnect to all peers, then keeps
serving for a bounded window - up to node.drain_timeout_secs (default 2s),
exiting early once all peers are gone - before tearing down. This lets
in-flight traffic settle and peers observe the disconnect before the
transports close, rather than the previous immediate teardown.
The lifecycle FSM gains a Draining state plus Drain/DrainDeadlineElapsed
events; the run loop observes the shutdown signal and transitions to
draining in place - one continuous loop, so the channel receivers are
never destructively cancelled. The published NodeState gains a Draining
variant, visible via control queries during the window. The immediate
stop() path used by tests and non-daemon callers is unchanged: it still
tears down immediately with no drain wait.
The reconciler-gate actions the drain emits are no-ops until the peering
reconciler lands and consumes them.
Introduce a sans-IO lifecycle supervisor: a synchronous step(event) ->
[action] state machine (SupervisorFsm) that authors the substrate-child
spawn and teardown order, plus an owner struct (Supervisor) holding the
substrate runtime fields and embedding the FSM. The substrate-lifecycle
fields leave Node's flat list into the owner - state, packet_tx, the TUN
reader/writer handles + shutdown fd + channels, the DNS task + identity
channel, the Nostr/LAN rendezvous drivers, and the encrypt/decrypt worker
pools; the dataplane keeps packet_rx.
start()/stop() become the driver executing the FSM's SpawnChild/StopChild
actions: same children, same order, same warn/debug-and-continue on
optional failures, same logs, same NodeState transitions. Behavior- and
wire-neutral. The only determinism change is that transports now tear
down in ascending-id order, previously nondeterministic HashMap iteration.
The bounded Draining phase and the Running{Full|Degraded} health split
land as separate follow-on commits.
Reorganize the node module tree by concept rather than by
message-handling verb, as the first step of the node runtime
decomposition. Pure relocation: no wire, config, metric, or log
semantics change; the lib test count is unchanged (1577 passed).
Moves (git mv, 100% rename similarity):
- handlers/{forwarding,rx_loop,connected_udp,dispatch,encrypted}.rs
-> node/dataplane/ — the whole RX hot path (the select! run loop,
transit/local forwarding, the link-message router, the RX decrypt
path with responder K-bit cutover + roam writes, and connected-UDP
fast-path activation) now lives in one home.
- node/session.rs -> node/session/mod.rs — establishes the session
concept home for the data/state types. The message-behavior file
handlers/session.rs stays put for now (folds in with the later FSP
session step).
The IK/XX-divergent establishment files (handlers/{handshake,rekey,
timeout}.rs) and the deferred-home files (handlers/{mmp,lookup}.rs)
deliberately stay in handlers/, to move once rather than twice.
Every module is reached through impl Node methods, so no call site or
re-export shim was needed. Updated in lockstep with the moves: the
module_path!-derived tracing targets in the two mesh-lab compose-trace
overlays, a structural test's include_str! source path, doc-comments
in proto/routing and the mesh-lab docs, and the stale source-location
citations (node/handlers/{forwarding,rx_loop,encrypted}.rs and
node/session.rs) in doc-comments and the discovery design doc.
Forward-merge three maint fixes, hand-relocated into master's
post-sans-IO / discovery-to-lookup structure:
- drop the redundant TreeMetrics parent_switched counter (keep
parent_switches), reconciled across the refactored tree/mmp sites and
the spanning-tree test reads
- keep the tighter path_mtu when applying a LookupResponse, now in
handlers/lookup.rs after the discovery module rename
- reuse one shared secp256k1 context in the identity module
Every sign/verify/key-derive site built a fresh context via
Secp256k1::new(), which allocates a Secp256k1<All> and runs
randomization/blinding table setup on each call. Introduce one
crate-wide LazyLock<Secp256k1<All>> and reuse it across the local, peer,
and auth sites (and their tests). Behavior-neutral: identical secp256k1
API calls, only the context lifetime changes, and the shared All context
still performs the standard construction-time blinding.
An originator handling a LookupResponse unconditionally overwrote the
cached path_mtu_lookup entry, so a looser (larger) estimate in a later
response could clobber a tighter value already learned from a reactive
MtuExceeded or PathMtuNotification. Read-and-compare before writing and
keep the minimum, so a looser discovery estimate no longer loosens the
clamp. Add a regression test.
parent_switched was incremented on the line immediately before
parent_switches at every site and never independently, so the two
counters were always identical. Drop parent_switched from TreeMetrics,
its snapshot, TreeStatsSnapshot, the show_tree fixture, and the fipstop
render, keeping parent_switches as the sole counter.
The routing-stats pane's Discovery Requests/Responses sections show the FMP
overlay coordinate-lookup counters. Rename the section labels and the nested
JSON key they read from "discovery" to "lookup" to match the metric family's
canonical name. The daemon dual-emits both keys, so this reads the current
name and no longer depends on the deprecated "discovery" alias.
Rename the Ethernet per-interface config flag from discovery to listen,
so the receive/transmit toggle pair reads as the symmetric announce
(transmit) / listen (receive) neighbor-beacon vocabulary. The old
discovery: key is still accepted via a serde alias, so deployed configs
load unchanged; to_yaml re-emits it under the canonical listen: name.
Marked deprecated for removal at the v2 cutover.
Updates the config field + accessor, the transport listen_enabled local,
the one struct-literal test consumer, the chaos sim config generator,
packaged fips.yaml examples, and the classified operator-facing docs
(ethernet neighbor-beacon subsystem prose; the generic Transport
discovery capability prose is left unchanged). Adds a compat parse test
asserting the legacy alias, the new key, and that deny_unknown_fields
still rejects unknown keys. Behavior-neutral.
Mirror the ethernet neighbor rename in the BLE transport: the internal
peer-detection buffer becomes NeighborBuffer (from DiscoveryBuffer) and
the module is renamed discovery -> neighbor. The BlueR/bluez API terms
(DiscoveryFilter, set_discovery_filter) and the BLE advertise/scan
mechanism vocabulary are unchanged, as is BleConfig. Behavior-neutral.
Rename the ethernet link-local neighbor-beacon subsystem from the
overloaded "discovery" vocabulary to a neighbor umbrella. The beacon
frame vocabulary is retained (build_beacon/parse_beacon/BEACON_SIZE/
FRAME_TYPE_BEACON/FRAME_TYPE_DATA); only the subsystem and buffer
identifiers change: DiscoveryBuffer becomes NeighborBuffer,
discovery_buffer becomes neighbor_buffer, and DISCOVERY_VERSION becomes
BEACON_VERSION (wire value 0x01 unchanged). Config toggles are left for
a follow-up commit. Behavior-neutral.
The module is gated target_os="macos" (not the broader Darwin/iOS family),
so the name now tracks the cfg and matches the *_macos.rs file convention
(io_macos.rs). Drops the redundant inner #![cfg(target_os="macos")] (the
decl gate already covers it) and corrects a stale top comment that claimed
the module stays visible on Linux — it is macos-decl-gated, so it never was.
Mechanical rename; no logic change.
ConnectedPeerSocket and PeerRecvDrain are node/peer-side logic: the Transport
trait never touches them, ActivePeer stores them, and node's encrypt worker
drives them. They only happened to live under transport/udp. Relocate the
handle types to a new src/peer/connected_udp/ module (socket.rs + drain.rs),
which the node handler and encrypt worker reach via node -> peer (no new edge;
a node home would have forced a peer -> node cycle).
The udp transport keeps only the kernel-construction seam: open_connected_fd,
now folded into udp/io.rs (the byte-layer home) behind a linux/macos-gated
submodule and re-exported as transport::udp::open_connected_fd. The node
handler builds the fd through it and adopts it via ConnectedPeerSocket::from_fd.
Behavior-neutral: no wire/config/metric/log change; the per-packet hot path
(bare-RawFd send_batch_gso/raw) is untouched. Preserves the Arc multi-owner
contract, the drop-drain-before-socket ordering, and the drain's detach-on-Drop
deadlock avoidance. Reconciles the old cfg(unix)/any(linux,macos) double-gate
onto the single any(linux,macos) predicate.
Pulls the connected-UDP socket construction (socket/REUSEADDR/REUSEPORT/
BUFFORCE/bind/connect + darwin tuning) out of ConnectedPeerSocket::open into
a pub(crate) open_connected_fd returning an OwnedFd; open() now delegates and
adopts the fd. Error paths still close the fd via the temporary's Drop; the
success tail transfers ownership through OwnedFd. Behavior identical. Prepares
the fast-path handle types to move to the peer module while the socket
construction stays with the udp transport.
Moves the inline TcpConnection/ConnectingEntry structs, the Direction
enum, and the ConnectionPool/ConnectingPool type aliases out of the
1147-line tcp/mod.rs into a dedicated pool.rs, matching the canonical
per-transport layout. Struct fields are pub(crate) so mod.rs can still
construct and read them across the module boundary. Pure relocation; no
logic change.
Moves parse_mac_string into ethernet/addr.rs and re-exports it at the
ethernet module root so the ethernet::parse_mac_string path stays
byte-identical for its one external consumer (zero churn there). Its
unit tests stay in mod.rs, calling through the re-export. Pure
relocation; no logic change.
Normalizes the ethernet transport onto the canonical byte-layer name
(io.rs), including the per-OS files io_linux.rs/io_macos.rs and their
#[path] wiring. Pure file rename plus module-path and doc-comment
updates; no logic, wire, config, metric, or log change.
Normalizes the udp transport onto the canonical per-transport module
layout (ble is the reference: io/pool/addr/stats). Pure file rename plus
module-path updates at the use sites; no logic, wire, config, metric, or
log change. Behavior identical.
The Nym transport was a near-clone of the Tor transport's outbound
SOCKS5 path. Extract the shared logic into src/transport/socks5/ so both
transports drive one implementation instead of two maintained copies:
- share one SOCKS5 mock server between the tor and nym tests
- extract the common send/receive/connect counters into a shared
ProxiedStatsBase (snapshot structs and emitted metrics unchanged)
- add a shared Socks5Dialer that collapses all six connect variants;
the sole dialing difference (tor's per-destination circuit-isolation
auth vs nym's no-auth) is an enum on the dialer
- route both tor and nym dialing through the shared dialer
- share the proxied connection pool, generic over a per-connection meta
type that carries tor's inbound/outbound direction counting (nym uses
the unit type)
- share the proxied receive loop
Behavior-neutral: no wire-format, config-key, emitted-metric, log, or
error-variant change. Tor keeps its control-port, inbound/onion, and
directory surface and its own address validation.
The FMP frame-boundary reader lived in transport/tcp/stream.rs, but the
Tor and Nym transports both reached across module boundaries to
'use crate::transport::tcp::stream::read_fmp_packet', a layering smell:
the reader is a shared stream-framing utility, not a TCP-private one.
Move the file to transport/framing.rs and repoint the tcp/tor/nym use
sites, removing the tor->tcp and nym->tcp dependencies. Behavior
unchanged.
TcpStats and TorStats each carried an identical pair of pool_inbound/
pool_outbound atomics plus the same five record_pool_* / pool_inbound_count
methods over them. Move the counter logic into a shared PoolCounters
struct (new transport/stats_common.rs) embedded as a 'pool' field in both.
The public record_pool_* methods stay as thin delegators so all call
sites and the flat pool_inbound/pool_outbound snapshot fields are
unchanged; only the duplicated atomic bookkeeping is now single-sourced.
EthernetStatsSnapshot derived only Clone/Debug/Default, unlike every
other transport's *StatsSnapshot which also derives Serialize. That gap
forced a hand-rolled serde_json::json!{} arm in TransportHandle::
transport_stats() that re-listed all ten fields by hand. Add the
Serialize derive and collapse the arm to the same one-line
serde_json::to_value(...) form the other transports use. The emitted
JSON keys and values are unchanged.
Measures the per-forwarded-packet cost of routing candidate assembly
(routing_candidates over a synthetic RoutingView) against a zero-alloc
reference across 8/32/128/256 peers, with per-call allocation counts via
a counting allocator. Criterion harness; no production code change.
Forward-merges the bloom SHA-256-once fix from maint. The bloom filter was
relocated to proto/bloom/ by the sans-IO refactor, so the fix applied cleanly
to proto/bloom/core.rs; the behavior-neutral test was re-homed into
proto/bloom/tests/core.rs (maint carried it in the pre-split bloom/tests.rs).
BloomFilter derived all k hash functions from one SHA-256 digest but
recomputed that digest inside the per-function loop, so every insert and
contains ran SHA-256 hash_count times (5x at the default) over the same
bytes. Hoist the digest out of the loop: base_hashes() computes it once
and returns (h1, h2), and bit_index() derives each of the k indices with
the same (h1 + k*h2) mod m arithmetic. Bit-for-bit identical output; this
is the hottest path in packet forwarding and mesh-size estimation.
Adds a test pinning the bit indices against the double-hashing formula
recomputed independently, proving the refactor is behavior-neutral.
Move the PromotionResult enum (and its impl) out of peer::mod and into
proto/fmp/core.rs, alongside the cross_connection_winner tie-break helper
that was relocated the same way. This is FMP connection-lifecycle result
vocabulary, so it belongs in the FMP subsystem home rather than the peer
module.
Behavior-neutral pure type relocation: consumers import it from
crate::proto::fmp, and the crate-root public path crate::PromotionResult
is preserved via a re-export in lib.rs (mirroring cross_connection_winner).
Full lib suite green at baseline.
Move the FMP mesh-layer wire format (common prefix, encrypted/msg1/msg2
headers, and the build_*/inner-header codec fns) out of node/wire.rs and
into proto/fmp/wire.rs, so the whole FMP wire surface lives with its
subsystem, matching the proto/fsp/wire.rs layout. The wire module becomes
pub(crate) mod wire; callers reach it via crate::proto::fmp::wire.
Behavior-neutral: pure relocation plus import-path rewrites across the
node/peer consumers; no logic change. Full lib suite green at baseline.
Carve the nostr rendezvous engine's decision logic out of the async
NostrRendezvous driver into synchronous, clock-injected cores, following
the failure_state.rs pattern: sync state behind std::sync::Mutex, time
passed in as now_ms, no .await and no I/O in the core. The driver performs
all relay/socket I/O and executes the returned plans.
- AdvertMachine (src/nostr/advert.rs): advert publish/cache/fetch/prune
decision logic; the driver executes a returned PublishPlan.
- TraversalMachine (src/nostr/traversal_machine.rs): the engine-scoped
cross-session decision state -- in-flight-initiator dedup, the dual-init
responder suppression election, and the replay/seen-session cache.
- classify_punch_packet (src/nostr/traversal.rs): a pure classifier for
the punch recv loop's packet branch table.
The driver keeps all I/O, the NAT punch send cadence, the offer-slot
admission semaphore, and the pending-answer oneshot routing. Behavior-
neutral: no wire, config-key, or metric change. Adds unit coverage for
the advert plans, election ordering, replay eviction, initiator dedup,
and punch classification.
Moving the nostr rendezvous engine to src/nostr/ (and mDNS to src/mdns/)
changed the module-path-derived tracing targets from
fips::discovery::nostr::* to fips::nostr::*. Update the RUST_LOG filters
in the NAT and mesh-lab test compose files and the resolve-peers-via-nostr
tutorial's debug recipe to the new targets so trace configs and the
documented journal-watch command keep emitting the intended lines.
Without this, the stun-faults suite's Phase-0 pre-flight (which greps the
daemon journal for the debug-level "STUN observation succeeded" /
"traversal: initiator STUN observed" lines) saw those lines suppressed —
the daemon behaved correctly, but the stale RUST_LOG target hid the
evidence. Test-harness and docs only; no source or behavior change.
Pull the rendezvous driver state and the movable driver logic out of the
Node struct into the src/nostr home. A new RendezvousDriver owns the
engine handle and the four bookkeeping fields (traversal start time,
startup-sweep latch, adopted bootstrap-transport set and their npubs)
that previously sat loose on Node; Node holds a single driver field and
reaches the same data through thin accessors, including the rx-loop
hot-path protocol-mismatch hook.
The advert build/refresh, the via_nostr fallback-address resolve, the
overlay-endpoint-to-PeerAddress mapping, and the bootstrap request move
onto the driver, taking their Node inputs explicitly (a transport-
endpoint snapshot for advert building) rather than reading Node fields
directly. Transport/connection-table-bound work (traversal adoption,
bootstrap-transport cleanup, the open-discovery sweep, and the outbound
budget calculators) stays on Node as thin glue that calls into the
driver.
Behavior-neutral relocation: statements moved verbatim, no logic, wire,
config-key, or metric changes. lifecycle.rs shrinks ~230 lines. cargo
fmt/build/clippy clean; lib suite 1547 passing (baseline unchanged).
Relocate the overlay peer-rendezvous subsystem out of the overloaded
src/discovery/ tree into two focused, independent homes: src/nostr/
(relay-mediated overlay endpoint advertise/resolve/auto-mesh plus NAT
traversal) and src/mdns/ (link-local DNS-SD rendezvous). The two
subsystems are independent, so they get separate homes rather than
sharing one.
Drop the ambiguous "Discovery" stem from their identifiers in favor of
"Rendezvous": NostrDiscovery -> NostrRendezvous, LanDiscovery ->
LanRendezvous, and the matching config, policy, field, and method names.
The former src/discovery.rs handoff types (EstablishedTraversal,
BootstrapHandoffResult, the punch-packet helpers) fold into
src/nostr/handoff and stay reachable via the crate-root re-exports.
Pure relocation and rename: no logic, wire-format, config-key, metric,
or tracing-target changes. The operator-facing node.rendezvous.nostr.*
and node.rendezvous.lan.* config keys and the fips-overlay-v1 advert
namespace are byte-identical. cargo fmt/build/clippy clean; lib test
suite 1547 passing (baseline unchanged).
The identifier "discovery" named three unrelated subsystems; the FMP
overlay coordinate-lookup subsystem is now consistently "lookup". This
finishes the concept-#1 rename across the shell, config, and metric
layers left after the earlier proto-layer rename:
- Handler module node::handlers::discovery -> node::handlers::lookup, and
reset_discovery_backoff -> reset_lookup_backoff.
- The Node lookup-engine field Node.discovery -> Node.lookup, renamed by
resolved binding so the metrics().discovery and node.discovery config
paths are left untouched.
- The lookup metric types DiscoveryMetrics -> LookupMetrics,
DiscoveryStatsSnapshot -> LookupStatsSnapshot, and Metrics.discovery ->
Metrics.lookup.
Two surfaces cross a stability boundary and ship behind a compatibility
window, both marked in-code for removal at the v2 cutover:
- The control-socket metric family is dual-emitted under both "discovery"
(deprecated alias) and "lookup" so existing dashboards keep working.
- The node.discovery.* config table is split into node.lookup.* (mesh
lookup scalars) and node.rendezvous.* (nostr/lan peer rendezvous).
NodeConfig does not deny unknown fields, so a naive rename would make a
deployed node.discovery: block deserialize into nothing and silently
revert every setting to default. A deprecated all-Option
DiscoveryConfigCompat field captures a legacy block and a new post-parse
Config::normalize_deprecated_keys pass folds it into the new tables with
a one-time deprecation warning.
Flip the packaged fips.yaml templates to the new keys, add legacy/new/
scalar compat parse tests, and record the split and deprecations in the
CHANGELOG. Behavior-neutral; fmt/clippy clean, lib suite green.
The previous portability fix bounded the powi test's drift from std::powi
at an absolute ULP count, but Windows/MSVC drift grows with the exponent
(3 ULP by exp=14), so no fixed ULP bound is portable.
Replace the ULP oracle with a loose relative-tolerance sanity sweep
(1e-11), which any sane libm clears by ~1000x regardless of exponent
while still catching a grossly wrong impl. Add a golden-bit pin for the
exp=14 case that exposed the growth. The powi function is unchanged; the
golden-bit determinism pins already passed on Windows.
The powi guard test asserted our square-and-multiply result was
bit-for-bit equal to f64::powi, which failed the Windows unit-test job by
one ULP. f64::powi is not portably bit-stable: Linux and macOS lower it
to compiler-rt's __powidf2, but Windows/MSVC rounds differently.
Our square-and-multiply is pure IEEE-754 f64 multiplication and is
therefore deterministic across every platform, which is the property that
actually matters for mesh nodes to agree on bloom FPR and backoff timing
regardless of OS. Replace the std bit-equality assertion with golden-bit
pins on our own output (locking that cross-platform determinism) plus a
bounded-drift sanity sweep against std::powi. The powi function itself is
unchanged.
Rename src/proto/discovery to src/proto/lookup and bring the module's naming
onto the lookup stem, matching its concept: a mesh lookup of a node's
coordinates from its pubkey, sent into the mesh as a bloom-filter-guided
multicast request that returns a unicast response with the coordinates.
- the module directory and its declaration (proto::discovery -> proto::lookup)
- exported types: DiscoveryAction -> LookupAction, DiscoveryBackoff ->
LookupBackoff, DiscoveryForwardRateLimiter -> LookupForwardRateLimiter,
MAX_RECENT_DISCOVERY_REQUESTS -> MAX_RECENT_LOOKUP_REQUESTS, and the Discovery
state struct -> Lookup
- internal terminology: doc comments, the "overlay-lookup" phrasing, the
empty_discovery/suppressing_discovery test helpers, and the disc
parameter/variable all take the lookup names
- the already-lookup-named wire types (LookupRequest/LookupResponse) are unchanged
Behavior-neutral: no wire bytes or decision logic change. Two references are
intentionally kept as "discovery": the still-named node::handlers::discovery
shell module and the node.discovery.* config keys, which belong to the broader
disambiguation of the shell, config, and metric surfaces still to come.
Bring the proto tree closer to a std+alloc-only posture, behavior unchanged on
every decision path:
- Sweep the remaining std::fmt and std::collections imports over to core::fmt
and alloc::collections across the wire codecs and their tests. Subsystem files
that shadow the core name with a child core module use the leading-colon
::core::fmt form. Imports only.
- Replace the two f64::powi calls (bloom false-positive-rate, FMP backoff timer)
with a shared core-only square-and-multiply helper in proto/math, bit-identical
to std::powi (a guard test pins this against every exponent the codecs reach),
and route the diagnostic estimated-count natural log through libm::log. The FPR
reject decision and the backoff timer are bit-for-bit unchanged; only the
debug-only count estimate may differ by at most one ULP.
Introduce a shared proto/codec module with a cursor Reader (short reads fail with
MessageTooShort { expected: position + needed, got: total }) and an append Writer,
and adopt them across the seven subsystem wire codecs, replacing the repetitive
manual slicing, try_into, and from_le_bytes extraction. Each existing length check
maps to the reader (an up-front minimum becomes require at position zero, so the
per-field expected values, including the tree-announce expected 99, are reproduced
exactly); the bloom exact-length check stays explicit since it also rejects
over-long payloads. Encoded bytes and decode decisions are unchanged.
Replace Malformed(String) with a no_std-clean set: Malformed(&static str)
for the static decode diagnostics, BadSizeClass { got, max } for the two
bloom size-class checks, and typed sources BadCoord(CoordError) /
BadBloom(BloomError) for the coordinate and bloom construction failures. Add a
dedicated CoordError so proto/coord no longer depends upward on stp TreeError,
resolving the temporary inversion from the coordinate relocation. Drop the
thiserror derive from the four proto error types (Error, TreeError, BloomError,
CoordError) in favor of hand-rolled core::fmt::Display and core::error::Error
impls. thiserror remains in use elsewhere in the crate. Wire decode decisions
are unchanged; only the error type and its diagnostic text change.
Hoist the two line-for-line-identical per-destination minimum-interval limiters
(discovery forward, routing error) into a shared PerAddrRateLimiter, and fold
the duplicated exponential-backoff math (discovery originator, FMP retry) into a
shared backoff_ms helper, both in a new proto/rate_limit module. The subsystem
limiters become thin delegating newtypes so should_forward/should_send and the
backoff call conventions are preserved. Behavior is byte-identical.
Two behavior-neutral relocations, wire bytes unchanged:
- Move the ParentDeclaration type and its impls out of state.rs into a dedicated
declaration.rs, re-exported at the same path, and relocate the inline wire.rs
test module into tests/wire.rs alongside the other stp unit tests (reusing the
shared test helpers). wire.rs drops to non-test code only.
- Move TreeCoordinate, CoordEntry, and the coordinate wire codec out of
proto/stp into a shared proto/coord module (a peer of proto/link), re-exported
from proto::stp so every existing import path keeps resolving unchanged.
Coordinate is a shared addressing primitive with many non-stp consumers, so it
no longer belongs under the spanning-tree subsystem. The codec carries a
documented temporary dependency on stp::TreeError until a dedicated CoordError
is introduced.
evaluate_parent no longer reads the injected clock: it returns a ParentEval of
Mandatory, Discretionary, or None, and the flap/hold-down veto is applied at the
edge via a new TreeState::is_switch_suppressed(now_ms), gating only the
discretionary arm. classify_announce/classify_periodic take the pre-computed
switch_suppressed bool instead of now_ms, so the whole classify ladder is
clock-free; the shell callers (tree announce/periodic re-eval, MMP first-RTT
re-eval, handle_parent_lost) compute the veto verdict. The no-coords parent
case stays discretionary (veto-gated) exactly as before. Behavior unchanged;
the veto tests now assert the moved responsibility.
Reorganize the MMP subsystem, behavior unchanged throughout:
- Restore the pre-migration role split: move SenderState into sender.rs,
ReceiverState (with its GapTracker helper) into receiver.rs, MmpMetrics and
RrLog into metrics.rs, and PathMtuState into path_mtu.rs, leaving the Mmp
aggregate plus the peer/session state in state.rs (1339 to 196 lines). Home
the module constants in a new limits.rs and re-export them at the same paths.
Pure code-motion with module rewiring; visibility unchanged.
- Dissolve the 97-line src/mmp shell, which held only MmpConfig and the
monotonic mono_ms() clock: move MmpConfig into config/node.rs (re-exported as
crate::config::MmpConfig), move mono_ms() into a new top-level src/time.rs
shell time seam, repoint all callers, and delete src/mmp/. Also correct stale
src/mmp/ doc-comment path labels to proto/mmp/ where they name the protocol
primitives.
Two behavior-neutral discovery cleanups:
- Move MAX_RECENT_DISCOVERY_REQUESTS out of the node discovery handler into the
discovery subsystem limits module and re-export it, keeping the two use sites
unchanged. Same value and semantics; only its home moves.
- Remove the ambient rand draw from LookupRequest by deleting generate() and
having the shell draw the random request_id and pass it into the existing
new() constructor. Same per-request u64 draw, now at the shell, leaving the
discovery codec free of ambient RNG reads.
The false-positive-rate primitive (fill ratio raised to the hash count) was
inlined at three sites. Hoist it into a BloomFilter::fpr() method and call it
from all three; the threshold/policy logic stays at the call sites. Behavior
and result bytes are unchanged.
Migrate the FSP end-to-end session subsystem into src/proto/fsp/ following the
established sans-IO shape, and retire the src/protocol grab-bag now that FSP was
its last occupant.
Relocate the FSP session wire (node/session_wire.rs plus the FSP message types
from protocol/session.rs) into proto/fsp/wire.rs. Hoist the pure decision logic
into proto/fsp/core.rs over plain-data SessionSnapshots returning an ordered
FspAction list the shell drives: session-rekey policy, msg3-resend
classification, post-decrypt epoch reaction, setup/dual-init tie-break,
coords/path-MTU emit-policy, bounded pending-queue, and IPv6 ECN. The
crypto-owning SessionEntry stays shell-side in node/session.rs (matching the FMP
ActivePeer pattern); proto/fsp is wire + core + limits only, with no proto->noise
dependency and no crypto.
Move the coords helpers to proto/stp/ (they serialize TreeCoordinate), and split
SessionMessageType: the encrypted-inner 0x10-0x1F variants stay in proto/fsp/wire.rs
while the 0x20-0x2F routing signals become a new RoutingSignalType in
proto/routing/wire.rs. Migrate the session-MMP shell adapter, which continues to
drive proto/mmp/.
Retire src/protocol: LinkMessageType and SessionDatagram move to a new shared
proto/link.rs, ProtocolError becomes proto::Error (relocated verbatim), the
deprecated MessageType alias and the unimported PROTOCOL_VERSION are dropped, and
src/protocol/ is deleted along with its lib.rs module declaration.
Behavior-neutral: wire bytes unchanged, oracle tests pass unedited except
mod-path relocation; adds rekey/epoch characterization tests and pure
poll/emit-policy core tests.
Migrate the v1 bloom filter subsystem into src/proto/bloom/, matching the
discovery/routing/fmp/mmp/stp reference layout and completing the proto/
relocation series for the data/wire subsystems.
- wire.rs: the FilterAnnounce (0x20) codec, moved from protocol/filter.rs
- core.rs: the pure BloomFilter algorithm (hash/insert/contains/merge/
as_bytes/from_bytes/estimated_count), moved from bloom/filter.rs
- state.rs: BloomState (per-peer inbound store, compute_outgoing_filter,
the injected-clock send debounce), moved from bloom/state.rs
- limits.rs: the v1 sizing constants
- mod.rs: module wiring + the BloomError enum
- tests/: the unit suite split by target (core/state/wire), no inline tests
no_std+alloc hygiene: core::fmt over std::fmt, the tracing dependency
dropped from the pure filter, and std collections replaced with
BTreeMap/BTreeSet (NodeAddr: Ord) for deterministic iteration. The pure
filter combination stays a BloomState method; the two irreducible shell
gathers (peer_inbound_filters, build_filter_announce) remain in the async
shell. Wire bytes and observable behavior are unchanged; full local CI
green (36/36) including the bloom-storm chaos gate.
Migrate the full non-async spanning-tree surface into proto/stp/, mirroring the
discovery/routing/fmp/mmp conversions. The classification ladder (parent-switch /
self-root / loop-drop / ancestry-update / periodic-rebroadcast / parent-lost) moves
out of the async node handlers into a pure Stp classify layer returning a
TreeDecision the shell drives, with effect ordering and per-arm invalidation
preserved verbatim. src/tree/ relocates wholesale: TreeState + ParentDeclaration data
+ coordinates into proto/stp/{state,coordinate}, the flap-dampening / hold-down
cluster into a FlapDampener in limits.rs, and the wire codec into wire.rs. The clock
is injected as u64 (wall-clock secs for the escaping declaration timestamp, monotonic
ms for the dampening timers via mmp::mono_ms); declaration crypto is field-partitioned
so sign/verify/hash run in the shell while the in-core modules carry data +
signing_bytes only. Peer maps/sets move to BTree; core/state/coordinate/limits are
core+alloc clean, with wire.rs the one std-tethered file. Behavior-neutral:
characterization tests added for the handler decision arms; convergence suite and
ci-local (36/36) green.
Johnathan Corgan