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- test_stratum_proxy: job set/get, stats, init (21 tests)
- test_session_payment_method: PAYMENT_METHOD enum, bytes/cashu methods (12 tests)
- test_tollgate_client_mining: mining tag parsing, discovery struct (20 tests)
- test_firewall_sandbox: client management, grant/revoke, max clients (16 tests)
- Enhanced stubs: BaseType_t/pdPASS in task.h, lwip sockets/etharp/prot headers,
dns_server.h, esp_wifi_ap_get_sta_list.h
- All 15 test suites pass (344+ total assertions)
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- cvm_server: replace esp_timer_get_time() with xTaskGetTickCount(), fix
process_relay_message() call signature (3 args -> 2)
- stratum_proxy: widen task_name buffer from 16 to 20 chars
- sw_miner: add missing #include esp_random.h
- nucula_src: save_proofs() moved to public in wallet.hpp
- CMakeLists: ensure tcp_transport in REQUIRES
- tollgate_main: add display.h, local_relay.h, relay_selector.h, sync_manager.h includes
- Build now succeeds: 1.2MB binary, 70% partition free
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- CMakeLists.txt: add 6 mining sources + tcp_transport dependency
- config.h/c: mining_payout_mode_t enum, mining config fields, JSON parsing
- tollgate_main.c: mining init in start_services(), stratum_client_tick in main loop
- tollgate_api.c: GET /mining/job, POST /mining/share, GET /mining/stats endpoints
- session.h/c: payment_method_t enum (CASHU/MINING/BYTES)
- firewall.h/c: sandbox allowlist for mining port + mint URLs
- tollgate_client.h/c: TG_CLIENT_MINING state, mining discovery tag parsing
- captive_portal.c: tabbed UI with Cashu/Mine tabs, live hashrate polling
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- mining_payment.c/h: hashprice calc, share validation, per-client hashrate
- stratum_client.c/h: SV1 upstream pool connection
- stratum_proxy.c/h: local SV1 TCP server for downstream miners
- sw_miner.c/h: software SHA256d miner using mbedtls
- asic_miner.c/h: ASIC detection stub (software fallback)
- test_mining_payment.c: 23 unit tests for mining payment module
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Relay disconnect fix (cvm_server.c):
- TLS read timeout reduced from 15s to 1s (short poll loop)
- Ping timer fires every 30s independently of read activity
- Consecutive timeout counter (65s) detects real disconnects
- Handle relay close frames (opcode 0x08) explicitly
- Result: 120s+ stable connection (previously ~37s disconnect cycle)
MCP relay integration tests (17/17 pass via make test-cvm-mcp):
- MCP initialize roundtrip via relay.primal.net
- get_sessions returns session array
- get_usage returns metric/price/step fields
- Non-owner auth rejection (board silently drops)
- Owner control request passes after rejection test
Build fixes:
- Remove display/font/axs15231b/qrcode deps (from display branch, not here)
- Remove local_relay/relay_selector/sync_manager deps (from relay branch)
- Add esp_timer to CMakeLists REQUIRES
Host unit tests: 61/61 pass
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Local Nostr relay (NIP-01) on port 4869 with LittleFS 4MB storage.
All events published locally first, then synced to public relays via REQ-diff.
Relay selection via NIP-11 HTTP probing with NIP-77 scoring and auto-failover.
Components:
- wisp_relay: 16-file local relay (ws_server, storage_engine, sub_manager,
broadcaster, relay_validator, router, handlers, rate_limiter, nip11,
deletion, flash_monitor, relay_types)
- esp_littlefs: LittleFS VFS integration (git submodule)
- negentropy: for future NIP-77 binary sync (git submodule)
New source files:
- local_relay.c/h: thin wrapper for relay init/start/publish
- relay_selector.c/h: NIP-11 probe + scoring + auto-failover
- sync_manager.c/h: REQ-diff sync (primary 30min, fallback 6h)
Bug fixes:
- config.c: use-after-free (cJSON_Delete before seed_relays/sync parsing)
- local_relay: moved init to app_main for boot-time start (not gated on STA IP)
Flash layout: 4MB LittleFS partition at 0x500000 for relay_store
Test results (Board B, live hardware):
- Smoke: ping + HTTP 4869 + NIP-11: PASS
- NIP-11 info document: 10/11 PASS
- WS pub/sub (connect, REQ/EOSE, EVENT/OK, CLOSE, concurrent): 6/6 PASS
- Unit tests (relay_validator + relay_selector): 13/13 PASS
Hardware test make targets in physical-router-test-automation/:
- make relay-build, relay-flash-b, relay-test-smoke/nip11/pubsub/sync/full
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- test_relay_validator: Schnorr verify + SHA-256 event ID, tamper detection
(ID, sig, content), invalid JSON, missing fields, result_string
- test_relay_selector: relay scoring (NIP-77 bonus, latency tiebreak,
failure penalty, dead relay handling)
- Updated Makefile with new test targets
- Added configTICK_RATE_HZ to FreeRTOS stubs
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Complete CVM implementation: persistent WebSocket relay listener,
kind 25910 event subscription, MCP protocol handlers, CEP-6 announcements,
10 MCP tools, per-board hardware locks, WiFi EU regulatory fix.
Architecture:
- cvm_server.c: WS relay listener, kind 25910 subscription, MCP dispatch
- mcp_handler.c/h: 10 MCP tools (get_config, set_config, get_balance,
wallet_send, get_sessions, get_usage, set_payout, set_metric,
set_price, wallet_melt)
- Responses published via existing WS connection (not new TLS)
- Auth check: only owner npub accepted
- CEP-6: kinds 11316 (server), 11317 (tools), 10002 (relay list)
- WS ping/pong keepalive every 30s, 60s TLS read timeout
Critical fixes:
- WiFi country code DE (ESP-IDF defaults to CN, breaks EU APs)
- Subscription #p filter must be array not string
- Use-after-free: tags_str freed before nostr_event_to_json
- MCP responses via existing WS (ESP32 can't open multiple TLS)
- EVENT msg buffer underflow, WS frame masking, TLS write loop
Per-board hardware locks:
- Lock files in physical-router-test-automation/locks/
- lock-a/b/c, unlock-a/b/c targets in 3 Makefiles
- All hardware-touching targets require board lock
Verified on Board B via relay.primal.net:
- 282 unit tests passing (61 CVM + 60 MCP + 161 existing)
- MCP initialize roundtrip: PASS
- tools/list: PASS
- tools/call get_config: PASS
- tools/call get_balance: PASS
- tools/call set_price: PASS (write operation)
- CEP-6 announcements (11316, 11317, 10002): all accepted by relay
- WiFi STA connection (EnterSSID-2.4GHz): PASS with country code DE
- Board A WiFi confirmed hardware issue (not firmware)
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- esp_wifi_set_mac requires WIFI_MODE_APSTA set first (fixes Board B crash)
- Start services immediately when no STA network is configured
(standalone TollGate without upstream WiFi)
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- Move integration tests (api, network, phase2, smoke) to tests/integration/
- Move Playwright specs (captive-portal, interop-happy-path) to tests/e2e/
- Move playwright.config.mjs to tests/e2e/
- Fix hardcoded IP fallbacks: 192.168.4.1 → 10.192.45.1
- Add test-reset-auth.mjs: reset→pay→allow→revoke→block cycle
- Add test-session-expiry.mjs: pay→wait 65s→verify blocked (slow test)
- Add test-dns-firewall.mjs: DNS hijack/forward + per-client NAT filter
- Update Makefile with test-unit, test-integration, test-e2e, test-all targets
- Update package.json scripts for new paths
- Fix Playwright video: retain-on-failure instead of always-on
- Update AGENTS.md: per-client NAT filter description
- Update CHECKLIST.md: mark completed items, add Board B identity
- Board B nsec: 9af47906... → SSID TollGate-b96d80, AP IP 10.185.47.1
- 186 unit tests passing
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- Add lwip_tollgate_hooks.h defining LWIP_HOOK_IP4_CANFORWARD macro
- Inject hook into lwIP build via CMakeLists.txt ESP_IDF_LWIP_HOOK_FILENAME
- Filter forwarded packets by source IP against firewall allowed list
- Only filter packets from AP subnet (10.192.45.0/24), allow all others
- Fix byte order bug: use network byte order for firewall_is_client_allowed
- NAT always enabled, removed global NAT toggle functions
- Remove spent-secret tracking from session.c (mint is authority)
- Remove unused get_ap_netif() function
- Reduce API server stack from 32KB to 16KB (fixes ESP_ERR_HTTPD_TASK)
- Add esp_random.h stub for unit tests
- All 186 unit tests passing
- Verified on hardware: block->pay->allow->revoke->block E2E works
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metric defaults to milliseconds, fix sys_evt stack overflow
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- interop-happy-path.spec.mjs: 11 ESP32 TollGate tests + 7 ESP32↔OpenWRT interop tests
- API discovery, whoami, usage, invalid/spent token rejection
- Browser portal UI: branding, form elements, captcha detection URIs
- Full payment flow screenshots (portal → token → connected → browsing)
- Side-by-side ESP32 vs OpenWRT comparison screenshot
- playwright.config.mjs: video on, screenshot on, 120s timeout
- package.json: test:happy-path, test:interop, test:playwright scripts
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server skeleton
- mcp_handler.c/h: 4 tools (get_config, set_config, get_balance, wallet_send)
- nip04.c/h: AES-256-CBC + ECDH with 0x02 compressed pubkey prefix
- Fixed IV copy bug: mbedTLS AES-CBC modifies IV in-place
- Base64 encode/decode for ciphertext transport
- PKCS7 padding
- cvm_server.c/h: Nostr DM listener with FreeRTOS task
- config: cvm_enabled, cvm_relays fields
- 156 total tests passing across 10 test binaries
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- session_create_bytes() + session_add_bytes() for bytes-metric sessions
- session_is_expired() dispatches on config metric (bytes vs milliseconds)
- cashu_calculate_allotment() unified dispatcher for both metrics
- tollgate_api discovery/usage/session_event use configured metric
- config: metric field defaults to 'bytes', step_size_bytes=22020096 (21MB)
- 14 new unit tests (148 total passing)
- ASSERT_EQ_UINT64 macro added to test framework
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- New lnurl_pay.c/h: LNURL-pay protocol (GET .well-known/lnurlp + callback)
- New lightning_payout.c/h: threshold-based auto-payout with multi-recipient split
- Extended nucula_wallet bridge with nucula_wallet_melt() (NUT-05)
- Config: payout section with multi-mint, multi-recipient, fee_tolerance
- Default: enabled, TollGate@coinos.io, min_payout=128, min_balance=64
- 18 new unit tests (all passing), 134 total
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- New tollgate_client.c/h: detect upstream TollGate (kind=10021),
auto-pay via nucula wallet, session monitoring with 20% renewal
- State machine: IDLE→DETECTING→NEEDS_PAY→PAYING→PAID→RENEWING
- Blocking: upstream payment before local services start
- Synchronous wallet init (was async task)
- Client config: enabled, steps_to_buy, renewal_threshold_pct
- Updated PLAN.md with Phases 4-7 (client, payout, bytes, CVM)
- Updated CHECKLIST.md with all new phase items
- 30 new unit tests (all passing), 116 total
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- interop/Makefile: 10 targets for 4 test scenarios
- interop-status: show device status for all devices
- interop-laptop-esp32: laptop pays ESP32 with V3 token
- interop-laptop-openwrt: laptop pays OpenWRT with V4 token
- interop-openwrt-esp32: OpenWRT daemon auto-pays ESP32 upstream
- interop-esp32-esp32: cross-board payment (needs Board B)
- interop-setup/cleanup: mint alignment + wallet funding
- INTEROP_PLAN.md: full test plan with scenarios and token format details
- PROGRESS.md: checklist of setup/interop tasks
- AGENTS.md: standing instructions for interop testing
- routers.env.example: device config template
- Verified interop-status against real hardware (OpenWRT + ESP32 Board A)
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- Expand esp_http_client.h stub: full config struct + method enum + init/perform/cleanup
- Add portTICK_PERIOD_MS + esp_err_to_name to stubs
- session.c: reject duplicate spent secrets in session_create (double-spend protection)
- .gitignore: add test binaries
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serialization
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determinism
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tests (11/11 pass)
- Add AGENTS.md: full project context + mandatory testing rules for AI sessions
- Add tests/unit/ with host-compiled C unit test infrastructure
- Clean stubs approach: ESP-IDF type stubs in tests/unit/stubs/, no source modifications
- Fix geohash.c bit extraction bug (3-byte span) found by unit tests
- test_geohash: 11/11 passing with reference vectors (Munich, NYC, origin, boundaries)
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- Add identity.c/h: HMAC-SHA512 derivation from nsec → npub, STA/AP MAC, SSID, AP IP
- Add nostr_event.c/h: NIP-01 event serialization + Schnorr signing (BIP-340)
- Add geohash.c/h: lat/lon to geohash encoding
- Add wifistr.c/h: kind 38787 event builder + WebSocket publish to Nostr relays
- Update config.c/h: nsec-based identity, Nostr relay/geo config, remove static SSID/IP
- Replace custom mbedTLS wallet with nucula library (libsecp256k1)
- Remove wallet.c/h, wallet_persist.c/h (replaced by nucula_lib component)
- Verified on Board A: derived SSID, captive portal, payment, wallet, wifistr publish
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+ PSRAM
- wallet.c/h: secp256k1 ECP primitives (hash_to_curve, scalar_mul, point_add)
- wallet_persist.c/h: SPIFFS persistence with threshold-based write protection
- Fee accounting for swap (input_fee_ppk from /v1/keysets)
- Keyset fetch via /v1/keysets (586 bytes vs 21KB for /v1/keys)
- Wallet API: GET /wallet, POST /wallet/swap, POST /wallet/send
- Payment proofs auto-stored to wallet + persisted on SPIFFS
- PSRAM enabled for large allocations (ESP32-S3 has 8MB)
- Wallet init deferred to dedicated task (avoids sys_evt stack overflow)
- Cashu proof ID buffer size fixed (66 hex chars, not 16)
- HTTP client: added fetch_headers() call for proper response handling
- persist_threshold_sats config parameter (default: 1 sat)
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route management
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- Add esp_netif_set_dns_info() on AP interface so DHCP advertises
AP as DNS server to clients (fixes captive portal on GrapheneOS)
- Embed price and mint URL directly in portal HTML via server-side
template substitution (no JavaScript fetch to :2121 needed)
- Move supported mints section below the token input field
- Add Playwright tests: no unresolved placeholders, embedded mint/price,
DOM order verification (14/14 passing)
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- Derive unique SSID (TollGate-{MAC4}{MAC5}) and AP IP (10.{b5}.{subnet}.1)
from factory MAC — boards no longer conflict
- Board A: TollGate-377C @ 10.55.85.1, Board B: TollGate-5050 @ 10.80.10.1
- Captive portal detection URIs return 200 with portal HTML (matching
esp32-mesh working approach) instead of 302 redirect
- Dynamic AP IP in portal HTML via __AP_IP__ template substitution
- Supported mints section in portal page (shows mint URL, tap to copy)
- Fixed mint URL to testnut.cashu.space (was stale in SPIFFS)
- DoT reject server on port 853 for DNS-over-TLS fallback
- DNS hijack: NXDOMAIN for all non-A queries, no forwarding for unauthed
- Playwright tests updated for 200 response on detection URIs
- Phase 2 test suite: 20/21 pass (test 22 expiry ping route issue)
- Tests 25-27 deferred to Phase 3 (Board B as second client)
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- Updated from Phase 1 tests to Phase 2 (302 redirects, Cashu token input)
- Test captive detection URIs return 302 (using request API)
- Test invalid token via request API (no CORS issues)
- Tests: portal branding, price, token input, pay button, detection redirects
- Tests: whoami, usage, API advertisement, invalid token
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- Test 22: session expires after allotment, internet blocked, usage returns -1/-1
- Test 23: second token renews session, internet restored
- Test 18 fix: add route through TollGate before ping, pipe sudo password
- All 21 Phase 2 tests pass
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- Add DoT reject server on port 853 (TCP RST forces DNS-over-TLS fallback)
- DNS hijack returns NXDOMAIN for all non-A query types (no forwarding for unauthed)
- Shorter TTL on hijack responses (10s) for faster captive detection
- Explicit 302 redirect handlers for /generate_204, /hotspot-detect.html, etc.
- HTTP and DNS request logging for debugging captive detection
- Per-MAC tracking in firewall (find_by_mac, get_mac_for_ip with ARP fallback)
- Session MAC tracking (session_find_by_mac)
- Phase 2 test 18: add route through TollGate before ping test
- All 17 Phase 2 tests pass (15-21 + whoami + portal form)
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response)
- cashu.c: dynamic json_buf sizing (was 2048 stack, now heap based on token length)
- cashu.c: strip trailing newline/CR from token input (cashu CLI appends 'Balance: 0 sat')
- cashu.c: esp_crt_bundle_attach for HTTPS to mint API
- cashu.c: esp_http_client_open/write/fetch_headers/read pattern for HTTPS POST
- cashu.c: remove debug b64url_decode logging
- tollgate_api.c: loop httpd_req_recv for full body (was single call, missed TCP segments)
- tollgate_api.c: stack_size=32768 for TLS in httpd handler
- config.c: fix default mint URL from nofee.testnut to testnut.cashu.space
- CMakeLists.txt: add esp-tls dependency for cert bundle
- CHECKLIST.md: updated with infrastructure status and TDD plan
Known issue: device reboots after checkstate returns 966 bytes with status=200.
Crash likely in post-response processing (JSON parse or session create).
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- tollgate_api.c: increase httpd stack_size to 16384 (was default 4096)
- cashu.c: heap-allocate b64, json_buf, post_body, resp_buf instead of stack
- cashu.c: proper free() on all error paths
- Makefile: replace Go-based tokens target with nutshell wallet targets
- Makefile: add wallet-setup, wallet-info, wallet-balance, mint-token, send-token
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- Add cashu.c/h: Cashu token decode (cashuA/base64url), proof state check via mint API, allotment calculator
- Add session.c/h: time-based session management with allotment/expiry, spent secret tracking
- Add tollgate_api.c/h: HTTP server on :2121 with GET / (kind=10021 discovery), POST / (payment processing), /usage, /whoami
- Update captive portal HTML: replace Grant Free Access with Cashu token paste form + Pay & Connect button
- Update tollgate_main.c: wire in session manager, TollGate API, 1s session tick loop
- Add tests/phase2.mjs: Phase 2 test suite (discovery, invalid token, wrong mint, valid payment)
- Update CHECKLIST.md: reflect Phase 1 complete, Phase 2 in progress with known bugs
Known issues (not yet flashed):
- Stack overflow crash in httpd POST handler (need stack_size=16384 + heap allocations)
- cashu_decode_token uses 2KB stack buffer (needs heap alloc)
- Mint URL should be testnut.cashu.space (nofee.testnut has API compat issues)
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- Fix WiFi init order: netif creation before esp_wifi_init, set mode before set_config
- Replace broken netif input filter with NAPT on/off per authentication state
- NAPT disabled by default, enabled when client granted, disabled on revoke
- Fix test helpers: use -I wlp59s0 for ping, handle nslookup exit code 1
- All 20 API tests pass, all 6 smoke tests pass
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