Prerequisite for the export/import epic (#568): two device values the
connector could not read or write, both already exposed by firmware.
Identity (CMD_EXPORT_PRIVATE_KEY 23 / CMD_IMPORT_PRIVATE_KEY 24):
- adds the commands, RESP_CODE_PRIVATE_KEY 14 and the previously unhandled
RESP_CODE_DISABLED 15
- both firmware commands sit behind build flags, so a radio can legitimately
answer DISABLED. IdentityTransfer keeps unsupported distinct from rejected
so the UI can say the radio cannot do it rather than offering a retry that
can never succeed
- a short PRIVATE_KEY frame reports rejected instead of handing back a
truncated key that could be written to an export file
- import is destructive and documented as such; the key is never logged
Auto-add hop limit:
- GET already returned max_hops as a third byte and we discarded it; it is
now parsed and exposed
- SET learns an optional maxHops. Omitting it keeps the frame two bytes, so
firmware leaves the device value alone and existing callers are unchanged
- clamped to 64 on our side to match the firmware clamp
Adds handleFrameForTest so parse paths can be exercised without a radio,
following the file's existing visibleForTesting convention. 12 new tests.
A truncated caplog download used to completeError and discard every received
byte, so the user got nothing from a buffer still intact on the device (a tester
lost 8461/8608 bytes, 98.3%, deterministically per firmware#711 so retry can't
help). Now truncation is a soft outcome:
- downloadCaplog() returns a CaplogDownload (bytes + received/expected/chunks +
truncated) instead of throwing; busy/timeout still throw.
- serial_capture_screen still writes + LogExport.shareFile the partial bytes,
marks the file "# PARTIAL ..." with the counts, and shows a non-fatal warning
instead of a red error.
- Button label is now platform-aware (Download & save on desktop, & share on
mobile) via LogExport.actionVerb, matching the App/BLE log screens.
Replaces CaplogTruncatedException with CaplogDownload. Reassembler unchanged
(already keeps the bytes). Adds CaplogDownload contract tests.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Adds MeshCoreConnector.addContactByKey, the device-side half of the
identity exchange. It uses the stock CMD_ADD_UPDATE_CONTACT (command 9),
whose handler creates the contact outright when the public key is
unknown. Verified byte-identical to upstream meshcore-dev/MeshCore at
0679dbef, so this needs no capability gate and works on stock firmware,
not only Offband builds.
buildUpdateContactPathFrame gains an optional lastAdvert. It defaults to
now, leaving all three existing path-update callers byte-identical, and
addContactByKey passes the epoch.
That epoch is the whole point. The firmware compares this field against
every incoming advert with 'timestamp <= last_advert_timestamp' and
silently discards the non-greater ones as replay attacks
(BaseChatMesh.cpp:142-145). Advert timestamps come from the sender's
clock, and two nodes on this mesh currently advertise with 2024 clocks,
so stamping now would leave a key-added contact permanently deaf to its
own adverts. A negative input clamps to zero rather than wrapping to a
huge value, which would be the worst case for that guard.
The frame is sent at full length with the 0xFF flood sentinel. The
firmware length guard is only 'len >= 36' but updateContactFromFrame
reads through offset 136 regardless (MyMesh.cpp:295-318), so the frame
must never be trimmed. A test pins that too.
Local state keeps lastSeen at the epoch so the contact reads as
unverified until a real advert upgrades it (#630).
Epic #619.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Channel frames carry no key, so the sender name is resolved against known
and discovered contacts. Adds resolveContactsByName (returning Contacts,
which importDiscoveredContact needs) and rebuilds resolveContactKeysByName
on top of it so one matching rule serves both.
The avatar is the shortcut; the sender name stays inert because it sits too
close to the message body to hit reliably on a phone. Long-press keeps every
action it had and gains the same contact rows. A name several nodes claim
lists all of them, and an unheard name says so instead of failing silently.
The flood arm read as though the model were consulted:
if (pathLength < 0) {
// Flood: trust ML, only enforce firmware formula as floor
if (mlTimeout < physicsMin) return physicsMin;
}
return mlTimeout.clamp(physicsMin, physicsMax);
It never did that. _physicsMinTimeout and _physicsMaxTimeout return the
identical expression for pathLength < 0, mirroring the firmware's
calcFloodTimeoutMillisFor, so a clamp between them cannot preserve a
prediction. Whichever way control went, flood returned 500 + 16 * airtime.
The comment described behaviour the code did not have, which is exactly
the kind of load-bearing false comment that re-causes a bug later.
Replaced with an explicit early return and the constraint written down.
Behaviour is unchanged.
Equivalence is tested, not asserted. A new group attaches a real
TimeoutPredictionService, trains it on 40-56 s delivery times so any
prediction is far from 1300, and checks flood is unmoved while a direct
path is still clamped to its ceiling, which proves the clamp is live
rather than the predictor being absent. That group was run against the
pre-change branch and passes there too, so this is a simplification and
not a behaviour change.
Deliberately NOT decided here: whether flood should ever trust a
prediction. Every round trip measured to date was 0-hop direct, so there
is no flood data to decide it from. The verification needed to answer it
is written up on the issue.
Part of epic #473, stacked on #528, #529, #531 and #532.
The comment justified not modelling command execution time by claiming
`wifi on 30` does real work bringing up an interface. It does not. The
firmware handler sets a persistence deadline and sprintf's its reply
immediately (CommonCLI.cpp, "wifi on"), so execution is near-instant.
The owner caught it: he recalled reissuing the command several times
against on-screen errors, not one command taking 20 seconds.
The measurement supports him. On the 20.33 s case the reply carried
claimed=01:56:32 against a command sent at 01:56:26.938, and the RF frame
did not reach our radio until 01:56:47.271979. So roughly 5 s to reach the
repeater and be answered, then roughly 15 s in its transmit queue. The
tail is scheduling on both radios.
No behaviour change. The budget is unchanged and still has to tolerate a
20.33 s round trip; only the stated reason was wrong, and a wrong reason
in a load-bearing comment re-causes the bug later.
The CLI timeout used calculateTimeout, which mirrors the firmware's
calcDirectTimeoutMillisFor and estimates ONE-WAY delivery. A CLI command
is a request, an execution and a reply, so the budget was structurally
short.
Measured against rpt-01 on 910.525 MHz / SF7 / BW 62.5k / CR 4:5, where
the old window was 4074 ms: 27 commands sent, 12 replies matched, and 4
of those 12 arrived after the client had already given up, at 6.17 s,
8.28 s, 15.52 s and 20.33 s against a median of 2.75 s.
calculateCliTimeout sums four terms, each with a source rather than a
chosen value:
outbound leg calculateTimeout, which is what it actually models
cliReplyDelayMs 600, firmware CLI_REPLY_DELAY_MILLIS, unconditional
reply leg the reply is a second packet the ACK formula omits
retrieval budget replies are pull-based; the radio raises MSG_WAITING
and the app must ask, granting itself 5000 ms per
attempt across 3 retries
The retrieval term is derived from the sync constants rather than
restated, so the command timeout cannot drift below the layer it depends
on. That is the #530 invariant holding by construction, not by two
numbers being maintained in agreement.
Execution time is deliberately not modelled. The same verb, wifi on 30,
returned in both 2.31 s and 20.33 s, so it is not a per-command constant
that could be tabulated. The retrieval term carries that tail.
The reply leg uses physics only. The predictor is trained on
direct-message ACK latency, so asking it about a CLI reply leg would be
extrapolation; that is #534 and #535, not this change.
Tests cover the construction, the never-below-retrieval invariant, growth
with path length, coverage of the 20.33 s worst case actually observed,
and negatively that the direct-message ACK path is untouched.
Part of epic #473. Does not change the reported duration string (#531)
or the stale-prefix fallback (#532), and does nothing for commands that
draw no reply at all (#541).
extractScalarValue required ' = ' (space-equals-space) and trimRight()'d first,
so a blank field's reply 'key =' (no space after =) failed the match and the
whole 'mqtt.broker.N.field =' line leaked in as the value. Split on the first
'=' and trim instead: blank -> empty, values with '=' preserved. Regression
tests added.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Builder/parser for the client-issued 0xC6 CMD_OFFBAND_PKT_HASH query (per
firmware #611 contract) and firmwareSupportsPktHash (cap2 0x08 + ver >= 22).
Inert until firmware advertises the capability. Part of epic #524.
Agent: QuietSnow (session 31eaba02)
Switching radios showed the previous radio's channel history (including
its outgoing messages) on the new radio. The in-memory caches
_channelMessages, _conversations, and _loadedConversationKeys are keyed
by channel index / contact key, not by radio, and were never cleared on
a switch; a new radio's empty store could not overwrite them
(_loadChannelMessages only writes on a non-empty read). On-disk stores
are already per-radio (device+PSK since #277), so no re-keying or
migration is needed.
Clear the three caches in _resetConnectionHandshakeState (runs at the
start of every connect). loadAllChannelMessages and _loadMessagesForContact
repopulate from the new radio's store. Adds a regression test.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Client UI for the button-action matrix (#474) and the device notification
scope (#475), under Settings > Node Settings.
Speaks the canonical 0xC5 contract published by firmware in
OffbandConfigProtocol.h: one command byte, sub-code selects the surface
(0x01/0x02 scope get/set, 0x03/0x04 matrix get/set, 0x7F error). Not
folded into 0xC0, which is observer-only and would make the feature
unreachable on the headless trackers it exists for.
- Notification scope All/Self/None, labelled as this radio's buzzer and
kept distinct from the per-channel app notify mode. Re-read on open and
on every device-info refresh so a scope changed by triple-pressing the
device is never shown stale.
- Button actions per press sequence, assignable only from the action set
the DEVICE reports via its supported-actions mask, so a board with no
buzzer or no GPS never offers a choice it would refuse. Single press
defaults to unassigned.
- Long press is deliberately not assignable. Firmware owns it for CLI
rescue and power off, and remapping it could leave a screenless board
unrecoverable.
- Failures show the device's own reason via the firmware-owned reason
codes, not a generic error, and the banner persists until dismissed.
An unrecognised reason is surfaced with its raw code rather than
swallowed.
- State only ever follows the device's reply, never the request, so the
UI can never show an assignment the radio rejected and nothing is
faked or stored unacknowledged.
- A radio advertising neither capability bit gets a diagnosis, its raw
caps byte 2 and an explicit statement that no command will be sent,
rather than a blank screen that is indistinguishable from a bug.
caps2 bit assignment is firmware-confirmed: 0x01 notification scope, set
only where PIN_BUZZER is defined, 0x02 button matrix. That is the reverse
of the order the epics were filed in, so it cannot be inferred from issue
numbers.
21 protocol tests: gating, frame encoding, a lying count byte, unknown
sequence/action/scope codes, truncated and foreign frames, reason-code
mapping, and that no sequence models a long press.
NOT YET EXERCISED AGAINST A DEVICE. The firmware 0xC5 handler is written
but unmerged, so until it answers, a read shows its loading row and a
write is not confirmed. Hardware validation of the pair is the owner's
gate and has not happened.
Full suite 740 pass, analyze clean, format clean.
Epic: #474, #475
Agent: CalmBay (session d14220d9)
Two defects the adversarial review found, both verified before accepting.
1. `label` trimmed the name for display while the token stayed raw, so
two contacts differing only by surrounding whitespace rendered as
identical rows with no way to tell which one was about to be
addressed. That hides the exact identity #497 exists to preserve.
Display now defaults to the raw name.
2. Candidate deduplication used String.toLowerCase() while matching uses
the ASCII fold. Verified empirically: 'É' and 'é' compare equal under
toLowerCase and unequal under foldAscii, so of two real contacts one
silently vanished from the mention list while remaining matchable.
foldAscii is now public and is the single equivalence rule used for
both dedup and matching.
Regression tests added for both.
Full suite 719 pass, analyze clean, format clean.
Agent: CalmBay (session d14220d9)
Adds parseOffbandCaps2 alongside the existing tail-byte helpers, a
_offbandCaps2 field plus getter, and byte 2 in the device-info
capability log line.
Byte 2 sits at offset 84, deliberately NOT adjacent to byte 1 at 82:
offset 83 is already the FEM LNA state byte and every tail field is read
at a fixed absolute offset, so an adjacent insert would shift the FEM
state and make shipped clients misread a bitmask as the LNA toggle.
Firmware appends it at the end of the frame for that reason.
Absence is "no byte-2 capabilities", never an error, so any radio
predating the firmware change reads null and behaves unchanged.
No bit constants yet: byte-2 bits 0 and 1 are earmarked for firmware
epics but neither is claimed, so nothing gates on them here.
Wire contract from OffbandMesh/meshcore-firmware PR #515 (branch
feat/508-caps-byte2, commit 7664c29f). That PR is open pending this
client-side validation, tracked at #481.
Epic: #474
Agent: CalmBay (session d14220d9)
Owner ruling 2026-08-01. Mention autocomplete trimmed the contact name
when building the @[...] token while the device stores and matches it
byte-for-byte, so any name with leading or trailing whitespace was
unmentionable and never beeped. Confirmed on the wire: the contact
record keeps the 0x20, the outgoing mention drops it.
@[...] is a wire token, not display text. Entry, firmware memcpy,
advert encode, advert parse and the contact record are all verbatim by
design; this trim was the only transformation applied to a node name
anywhere, and it changed the identity of the addressee.
- MentionCandidate now separates the two concerns: `name` is raw and
goes on the wire, `label` is display-only and may be tidied. The
const constructor is preserved, so existing const call sites still
compile.
- The candidate builder keeps sender and contact names raw. Emptiness is
probed on a trimmed copy; the stored value is untouched.
- _mentionsSelf drops its own trim as a direct consequence: a raw token
requires a raw comparison, or this node stops recognising mentions of
its own name.
- Contract clause written at both the insertion site and _mentionsSelf,
stating the token is byte-for-byte and that a future .trim() tidy-up
is forbidden. The contract was silent on raw vs normalised, which is
why both sides were reasonable and incompatible.
Deliberately out of scope per the ruling: no entry-side trim in
settings_screen. It fixes no deployed name and would silently alter
deliberate spacing.
Test updated to assert the new truth: ' Ben ' does NOT match @[Ben],
and DOES match @[ Ben ]. Full suite 732 pass, analyze clean.
Agent: CalmBay (session d14220d9)
_mentionsSelf folded with String.toLowerCase(), which applies full
Unicode case mapping. Firmware adopts this same match rule with a
byte-wise fold that does not, so a node name carrying any non-ASCII
character could produce one self-mention verdict on the client and the
opposite on the device for the same message. A silent wrong answer, not
a visible failure.
Owner decision 2026-07-31: both sides fold ASCII A-Z only, so non-ASCII
names compare case-sensitively.
Extracts the rule into a testable static (mentionsName) and documents it
as a cross-repo contract: widening it, whether by accepting a bare
@name, restoring Unicode folding, or anchoring the match, is a breaking
change that ships only in an aligned client and firmware build pair.
Behaviour change: notifications for non-ASCII node names go from
case-insensitive to case-sensitive. Deliberate, per the decision above.
Epic: #475
Agent: CalmBay (session d14220d9)
Follow-up to #457. Swept the em-dash character (U+2014) out of the test
tree (test descriptions and comments) and cleaned 8 em-dashes that
landed in lib comments via the #456 refactor after #457 merged, so the
tree is back to zero. Same rules: replaced with commas/colons/periods,
preserved the lone "no data" glyph placeholders, left non-English ARB
untouched.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Smaz is a client-side text convention with no MeshCore protocol or firmware
support (findings: GH-315). When enabled it compressed ordinary prose into
`s:`+base64, which any non-lineage client renders as garbage — the same
cross-client interop failure as the old `g:<code>` GIF token.
Phase 1 of the Smaz-removal epic (GH-314): stop sending Smaz and remove the
user-facing surface, while KEEPING decode so messages from lineage peers still
on Smaz, and any legacy compressed rows, keep rendering. Decode removal is
deferred to Phase 2 (GH-421).
Removed: the Smaz branch in prepareContact/ChannelOutboundText (Cyr2Lat branch
and the structured-payload guard preserved); connector state/API (the enabled
maps, is*/set*SmazEnabled, ensureContactSmazSettingLoaded, the warm-up and
channel loaders); the per-channel and per-contact toggles plus their
mutual-exclusion; loadSmazEnabled/saveSmazEnabled and the `*_smaz_` key prefixes
(stores kept, they also hold Cyr2Lat); l10n `channels_smazCompression` and the
orphaned `chat_compressOutgoingMessages` across 18 locales (+ regenerated
app_localizations).
Retained for Phase 2: the 5 Smaz.tryDecodePrefixed decode sites and
helpers/smaz.dart.
Safety (verified): no storage migration, the app already persists plaintext
(receive decodes before store; send stores the pre-compression text), so the
`s:` form was wire-only. ACK matching is unaffected, the expected hash derives
from prepare*'s output, so dropping compression keeps both sides hashing
plaintext.
Behavior change: the composer byte-counter now reflects raw size, so anyone who
had Smaz on can type slightly fewer chars per message.
Tests: gif_url_outbound_guard_test rewritten to pin plaintext passthrough and
decode retention. Full suite green, analyze clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Fixes the reboot-test failure (support latched "unsupported" after the
reconnect window) and reworks the boot-log UX per Ben.
- meshcore_protocol.dart: offbandCapCaplog (0x20) + firmwareSupportsOffbandCaplog
(0x20 bit AND FIRMWARE_VER_CODE >= 17), mirroring the block-cap pattern.
- meshcore_connector.dart: supportsOffbandCaplog getter.
- serial_capture_screen.dart: gate support on the static cap bit (reactive via
the connector), not a one-shot STATUS probe, so it never latches "unsupported"
after a reboot. Derive capturing state from device STATUS so an auto-resumed
capture (post firmware #428) shows STOP not START. Cancel timers on disconnect,
re-query STATUS on reconnect. New red "Start & Reboot" (no timer) boot-log flow.
- 4 cap-gate unit tests; 18 caplog tests total green; analyze clean.
Root cause confirmed with firmware (TopazHill): caplog cap bit (0x20) is
advertised statically across reboots; the client's probe raced the reconnect
window and latched. Firmware #428 (persist flag + boot capture) is the other half.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Extends the 0xC4 caplog protocol with the companion control sub-codes the
firmware exposes (the companion has no CLI; #395 CLI verbs are repeater-
only). Firmware #417/#408.
- meshcore_protocol.dart: request sub-codes ENABLE/DISABLE/ERASE/STATUS +
builders; ACK / STATUS parsers (CaplogAck, CaplogDeviceStatus).
- meshcore_connector.dart: setDeviceCaplogEnabled / eraseDeviceCaplog /
getDeviceCaplogStatus; 0xC4 response routing split so ACK (0x10) and
STATUS (0x11) dispatch to own completers, download stream unchanged.
- 5 unit tests for builders + parsers; analyze clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Slice 1 of the client half of serial-capture (#430): the protocol layer
to download the device's serial-capture buffer over the companion link.
- meshcore_protocol.dart: cmdOffbandCaplog / respCodeOffbandCaplog = 0xC4
(NOT 0xC3, which collides with cmdOffbandFemLna; see firmware #406),
START/CHUNK/END sub-codes + request builder.
- caplog_reassembler.dart: pure START/CHUNK*/END reassembly state machine
with truncation detection, unit-tested in isolation.
- meshcore_connector.dart: downloadCaplog() + 0xC4 frame dispatch + fast
busy-reject on RESP_CODE_ERR while awaiting START.
- 9 unit tests passing; flutter analyze clean.
Integration test gated on the firmware 0xC4 fix merging. Not pushed
(human-test gate).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Wadamesh keys its history watermark (last_delivered_seq) by client_id. We
sent none, so we shared the empty-string slot with every other MeshCore
client on the machine: whichever connected first drained the device history
ring and the next app got NO_MORE_MESSAGES for frames it never received.
cid_len is 6 by necessity, not preference. Stock reads cmd_frame[1..7] as
reserved with the app name at a fixed offset 8; Wadamesh reads the name at
2 + cid_len. Only 6 puts the name at 8 on both, so one frame serves both
firmwares with no firmware change. Covered by app_start_frame_test.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Completes the client half against the firmware as-built (#298):
- Device-info offset 83 carries the FEM LNA state on v16+, appended
unconditionally (reads 0 on non-capable boards). parseFemLnaState is
length-guarded and returns null pre-v16. Byte presence signals firmware
version, not capability — the cap BIT gates the UI.
- 0xC3 reply handler adopts the reported value verbatim: firmware returns
post-apply hardware state, not an echo, so a refused write surfaces as
truth rather than a lie.
- setFemLna / requestFemLnaState no-op unless the capability bit is set,
so a non-capable radio never sees 0xC3 traffic.
- Radio Settings toggle rendered only when the bit is set, driven by
connector state via ListenableBuilder rather than local optimistic
state, so it always shows what the radio reports.
- errCodeUnsupportedCmd documented: a mis-gated request draws [0x01][0x01],
not [0x01][0x06]. Neither is 0xC3-prefixed, so no new error path.
Gating is on the bit alone, never model or version: firmware derives it
from a runtime FEM probe, so two Heltec V4s can legitimately disagree and
rak3401 reports false by design (its SKY66122 gates LNA and PA together).
13 tests. Not hardware-validated — firmware 0xC3 is still on a branch.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Adds the client half of the Heltec V4 FEM LNA control surface at the
protocol level: 0xC3 CMD_OFFBAND_FEM_LNA (0x01 SET [value], 0x02 GET),
a 3-byte [0xC3][sub][value] reply parser, and the
OFFBAND_CAP_FEM_LNA = 0x04 capability gate.
Deliberately a fork-private command rather than a sixth byte on the
stock CMD_SET_OTHER_PARAMS (38): that frame is shared with upstream
MeshCore and is sent to every radio regardless of fork, so widening it
would perturb stock firmware. Nothing is emitted unless the capability
bit is set.
The gate checks the bit only, never model or version — firmware derives
it at runtime from the auto-detected FEM chip, so it is a per-unit
answer and two Heltec V4s can legitimately disagree.
PROVISIONAL: firmware owns the caps byte and has not yet confirmed 0x04
is free, and the 0xC3 setter is not built yet. Spec sent to
OffbandMesh/meshcore-firmware#298. Do not merge before firmware
confirms the shape as built.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The firmware path-len byte is packed and self-describing (src/Packet.h:79-84):
high 2 bits = hash size - 1, low 6 bits = hash COUNT (hops), byte length =
count * size. The app treated the low 6 bits as a byte count and ignored the
width, on the strength of a comment asserting the high bits were "not reliably
populated". Both halves of that comment were wrong.
Receive: Contact.fromFrame read `count` bytes where firmware meant `count`
hops, so at 2-byte width it kept HALF of every path and discarded the rest.
DAYTON VA's 2-hop route became a 2-byte fragment, which is why every repeater
login in Bandit's capture timed out.
Send: buildUpdateContactPathFrame wrote the count raw, leaving mode bits 00.
That tells the radio "1-byte hashes" while handing it 2-byte hash data, so it
routed to nodes never on the route. This is the likelier cause of the observed
"routes via c6 and 5c separately" behaviour.
Also fixes a third unit inconsistency: setContactPath wrote customPath.length
(bytes) into pathLength (hops) after every path set.
Contact now carries pathHashWidth per path, so a stored path can never be
re-sliced at a width it was not captured at. realHopCount() is removed rather
than adjusted: it divided an already-correct hop count, halving it at 2-byte
width, and every call site was compensating for a bug that no longer exists.
Migration (Ben's call, option A): records written before this change have no
pathHashWidth and hold truncated bytes that cannot be recovered by
reinterpretation, so their path is dropped and the contact reverts to flood
until the radio re-supplies it. Logged, not silent.
Tests asserted the old semantics (expect(realHopCount(2, 2), 1)) and were
rewritten against firmware truth rather than adjusted to keep passing. Added
send-side encoding coverage, which did not exist. 456 tests pass.
Refs #240, #279, #299
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The picker emitted `g:<id>`, a convention that exists only in this Flutter
client lineage's parseGif (inherited from upstream, not a MeshCore protocol
feature). A recipient on stock or any non-lineage client has no way to expand
it, so a GIF arrived as opaque text (#223).
encodeGif now emits `https://giphy.com/gifs/<id>`, a form parseGif already
matches, so:
- stock clients receive a tappable URL they can actually open
- Offband keeps rendering inline with no render-side change
- legacy `g:<id>` payloads still decode, back-compat unchanged
Cost is ~41B vs ~20B against a ~160B payload. A full message carrying sender
prefix + reply mention + URL measures ~79B, roughly half the cap.
Checked, and did NOT change, the outbound structured-payload guard in
prepareContactOutboundText/prepareChannelOutboundText: Smaz.encodeIfSmaller
declines to compress a URL (base64 overhead exceeds the dictionary gain) and
Cyr2Lat passes unmapped ASCII through, so a GIF URL survives intact without
widening the guard. Both pinned as regression tests instead.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Three routing-match sites keyed/compared nodes by only the first
public-key byte, which collides when two nodes share a first byte on a
2-/3-byte path-hash mesh:
- DirectRepeater.matchesPathStart() replaces the 1-byte
`pubkeyFirstByte == pathBytes.first` direct-repeater check in
chat_screen and path_management_dialog (x3 each).
- map _computeGuessedLocations packs the full configured-width prefix as
the repeaterByHash key and looks up the contact-side hop at the same
width — was keying publicKey[0] but reading pathBytes.last, a silent
miss at width>1 that stopped location-guessing on multi-byte meshes.
- map _filterContactsBySettings overlap detection compares the
configured-width prefix via _samePubkeyPrefix (was publicKey.first).
Adds DirectRepeater.matchesPathStart unit tests. Bumps build to +46 for
the combined path-hash sweep test binary (b46: #151+#154+#155+#156).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
DirectRepeater stored only pubkeyFirstByte (1 byte of the last hop), so the SNR
indicator + Nearby Repeaters dialog showed a 1-byte prefix and matched the wrong
repeater on 2-/3-byte path-hash meshes. Capture the last hop's full configured-
width prefix and use it for display, contact-match, and dedup.
- DirectRepeater.pubkeyPrefix (Uint8List) + prefixHex getter; pubkeyFirstByte
retained for the path-management / chat matching sites (those are #156).
- _updateDirectRepeater captures path[len-width..] (or the pubkey prefix when no
path); dedup by listEquals(pubkeyPrefix).
- snr_indicator: status-bar + dialog render prefixHex; matcher keys on the full
width prefix so the correct repeater name resolves.
Bumps build to +45. analyze clean; 6 DirectRepeater tests (2 new); Gemini: ship.
Closes#151
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Packet Path mis-identified repeaters: a 2-byte path hash like 6A3D was
sliced into two 1-byte hops (6A + 3D), so the first byte collided with an
unrelated repeater (Freemasons 6A..) and the second matched nothing
("Unknown Repeater").
- meshcore_protocol: realHopCount() converts the firmware path BYTE length
to true hops via the device hash width.
- channel_message_path_screen: slice/count/match at the device
pathHashByteWidth (not the unreliable per-message high-bits); bucket and
match on the full w-byte hash (mirrors _pathMatchesContact), not hash[0].
- channel_chat_screen: same width fix on the per-message via-line + hop badge.
- settings: show the build number alongside the version name.
- bump 1.1.2-beta.4+36.
- test: realHopCount regression coverage.
Gemini review (llm-consult): fix-then-ship; 2 findings clarification-only
(_formatHash is canonical hex used identically both sides; pathHashByteWidth
is static per-connection).
Part of epic #112.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The BLE/USB self-info retry was an unbounded 3.5s hammer -- the Web path caps at
3 and skips while syncing; BLE had neither. On a slow device handshake it churned
the connect and starved the contact sync, hanging the contact-load bar. Inherited
from upstream zjs81/meshcore-open (git blame; zero Offband commits).
- Replace the unbounded 3.5s Timer.periodic with a self-rescheduling backoff:
3.5s -> 7 -> 14 -> 28 -> 56s, then a steady ~60s keep-alive. Never hard-stops --
a slow/recovering device still gets prompted.
- Add the Web path's skip-while-syncing guard on BLE (per-tick skip, never
permanent: the timer keeps rescheduling, so a settled sync lets the next tick
send).
- Decisions extracted as pure, tested helpers: nextAppStartRetryDelay(attempt)
and shouldSendAppStartRetry({connected, awaitingSelfInfo, syncing}).
- Disconnect teardown (Gemini's amendment) was already present (:2501 / :2374).
Gemini plan-review: Proceed, no blockers. 6 new helper tests; full suite 299 green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The firmware answers RESP_CODE_ERR for an empty/invalid channel index, but
_handleErrorFrame never advanced the in-flight channel sync. So every empty slot
waited out the 2s timeout + 3 retries (~8s each): a device with a few populated
channels out of a large capacity took minutes to sync (~40 slots requested, ~29
empty -> ~4 min) before the real channels (which answer CHANNEL_INFO) finally
synced in the last couple seconds.
Now an ERR that lands while a channel GET is in flight (and no generic-ack
command is waiting -- that one is order-correlated to the ERR first) advances to
the next slot immediately, mirroring the CHANNEL_INFO success path minus adding
a channel. The decision is pinned as a pure static predicate and tested,
matching the connector's existing decision-helper test convention.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Gemini MAJOR #4 (offset unverified / short-frame robustness):
- Offset VERIFIED against firmware MyMesh.cpp: the device-info tail is three
consecutive out_frame[i++] writes -- client_repeat@80, path_hash_mode@81,
offband_caps@82. Bytes 80/81 are shipping (path-hash), so caps@82 is correct
by adjacency, not a guess.
- Extracted MeshCoreConnector.parseOffbandCaps (pure, bounds-checked) so the
guard + offset are unit-testable; _handleDeviceInfo delegates to it.
- 4 tests pin: pre-v14 short frame -> null, len-83 reads byte 82 verbatim,
observer bit round-trips supportsConfig, hostile truncated frames never OOB.
Live observer node confirms end-to-end at G2.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
11 tests for ObserverConfigClient / BrokerListDecoder. 9 green (builders,
response parsing, happy-path decode, malformed-NUL, garbage-numeric, stray-KV).
2 RED BY DESIGN, documenting the Gemini findings to be fixed by C1 (#72):
- DoS: BrokerListDecoder retains 256 slots from a hostile BROKER_KV flood
(must bound to brokerSlotCount=10).
- out-of-range slot 200 is stored (must be dropped).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
DirectRepeater.ranking added recencyScore (0..1.8M) to the SNR term (1000/dB), so recency dominated (~1 dB == 1 second), contradicting the comment that recency only breaks ties. Scale recency to a 0-999 bonus so SNR (1000/dB) is primary and recency only decides sub-dB ties.
Offset SNR by its floor (+32; SX126x SNR spans -32..+31.75 dB) so every live ranking stays >= 0, above the -1 stale sentinel; otherwise the scaled-down recency leaves live rankings negative and a stale repeater would outrank a live one.
Adds DirectRepeater.ranking tests: SNR-first, recency tie-break, stale=-1, live-always-outranks-stale.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The function emitted two consecutive 8-byte position blocks instead of
one, producing a frame 8 bytes longer than the documented layout. When
a caller passed lastModified, the firmware parsed the duplicated second
lat as the timestamp, giving wildly wrong "last seen" values on
imported contacts.
Delete the unconditional first block; keep the conditional block that
correctly skips the optional tail when neither location nor
lastModified is set, zero-fills position slots when only lastModified
is present, and appends the optional timestamp.
Adds test/connector/build_update_contact_path_frame_test.dart with
five cases covering all four optional-tail combinations plus the
fixed-point lat/lon encoding.
Fixes#427
Strycher
kingult
just-stuff-tm