Commit Graph
75 Commits
Author SHA1 Message Date
evgeny d8337b9c3b whisper: опциональный configure --with-whisper; chatgui: парсер [debug]; stdint.h в AC_CHECK_HEADERS 2026-08-09 13:54:22 +03:00
evgeny 7f901c01e1 etcp: переупорядочить close + защита state==2 во всех API-точках; topo: правильная очистка group nodes и registry; chat/member: новый модуль member_sync; chatgui: обновления транспорта и UI 2026-08-09 12:39:53 +03:00
evgeny b2e4aadbf0 e2e: AES-128-CCM encryption via BGP router (ROUTER_FLAG_ENCRYPTED), ECDH key per peer-pair from NODEINFO pubkeys, cache 8 entries
- etcp_router.h/c: new flag ROUTER_FLAG_ENCRYPTED (0x04), etcp_route_send_encrypted(), inflight/retrans/send_q support
- utun_instance.h: e2e_ctx_cache[8] — per-peer sc_context_t cache with derived session key
- topo_node.c: topo_node_sign_self() — single point for Ed25519 self-signing of NODEINFO
- topo_node.c: fix stale x25519_self_sig after address update (topo_node_sign_self call)
- nat_detection.c: fix stale x25519_self_sig after in-place socket meta modification
- test_etcp_router_unit: 5 E2E tests (basic round-trip, no NODEINFO drop, tampered, cache reuse, ENCRYPTED+SIGNED combined)
- builds clean, 70/70 tests pass
2026-08-09 08:19:20 +03:00
evgeny 38c9f229bc stcp: ed25519 pubkey exchange in handshake, fix instance destroy segfault, fix chat_tcp_test
- u_async.c: process immediate_queue BEFORE epoll_wait in uasync_poll
- stcp_link.c: defensive NULL etcp_conn/etcp_link in stcp_link_close
- utun_instance.c: move stcp_server_list_destroy_all to Phase J (before ETCP),
  add deferred drain in both Phase J and L
- stcp.h/c: STCP_HS_ENC_CLIENT 6→38, STCP_HS_ENC_SERVER 7→39,
  exchange ed25519_pubkey in both handshake directions
- etcp_connections.c: copy peer_ed25519 from STCP to ETCP_CONN in
  etcp_link_enter_ready_tcp; guard link->etcp in tcp_link_close_cb
- chat_sync.c: fix lk->conn NULL dereference for TCP links
- test_stcp.c: update stcp_server_create/stcp_client_connect callsites
- tools/chat_tcp_test: change transport udp→tcp
2026-08-07 00:48:27 +03:00
evgeny d773f1724a refactor: STCP connections as ETCP links (is_tcp)
- Add is_tcp, tcp_link, tcp_reconnect_* fields to ETCP_LINK
- Remove transport_link from ETCP_CONN, add tcp_link_count
- stcp_link: replace embedded etcp_conn with pointer; add etcp_link backpointer
- stcp_link: link_rx_cb routes ETCP data to etcp_conn_input
- stcp_link: call on_close_cb in close
- New TCP functions: etcp_link_enter_ready_tcp, etcp_tcp_link_start_connect,
  etcp_tcp_link_start_reconnect, tcp_link_close_cb, etcp_tcp_send
- etcp_link_new: handle NULL conn for TCP links; skip enter_init for TCP
- etcp_link_close: close stcp_link for TCP
- etcp_encrypt_send: redirect TCP to etcp_tcp_send (skips AES-CCM)
- tcp_server_on_link: create ETCP_LINK(is_tcp=1) + enter_ready_tcp
- etcp_connect: TCP addrs -> etcp_tcp_link_start_connect
- Remove ctx->tcp_link/tcp_ready
- test_stcp_traffic: find stcp_link via links->is_tcp instead of transport_link
- 66/68 tests pass; 2 STCP tests expected to fail (integration not complete)
2026-08-06 22:14:32 +03:00
evgeny dfe9d36783 wip: STCP TCP chat integration — diagnostics, invite TCP fallback, test infra 2026-08-06 18:41:41 +03:00
evgeny ef637d33a6 auto_socket: модуль авто-управления сокетами при изменении сетевых интерфейсов + fix pre-existing ASAN-багов
- auto_socket.c/h: создание/удаление UDP сокетов автоматически при изменении интерфейсов через netlink/route socket
  При auto_sockets=yes пропускает ручные [server] сокеты
  Тип сокета: PUBLIC если публичный IP, иначе NAT
  Для новых сокетов добавляются линки ко всем активным NCD-соединениям
  При удалении интерфейса линки убираются, сокет закрывается
  Platform-agnostic API для использования из Android/chatgui

- node_conn_direct.h/c: ncd_add_socket_links / ncd_remove_socket_links — управление линками на конкретном сокете

- socket_monitor.h/c: экспорт socket_monitor_update_if_addr для auto_socket

- config_parser.h/c: опция auto_sockets в [global]

- init_sockets(): пропуск ручных сокетов при auto_sockets=yes

- utun_instance: интеграция auto_socket_init/destroy

- media_delivery: fix stack-buffer-overflow ack[3] → ack[9]

- topo_node: fix heap-use-after-free в topo_group_update_my_nodeinfo — сохранение node_id/ver перед registry_store, использование return value
2026-08-05 23:09:59 +03:00
evgeny f5efaa495b socket_monitor: extract socket monitoring from etcp_connections, add per-instance context
- New files: transport_layer/socket_monitor.c/h — socket state monitoring with per-instance ctx
- etcp_api: expose get_latency/1s_pkt_count measuring, add etcp_hashrnd for tests
- utun_instance: store socket_monitor per instance, add is_socket_ok check
- topo_node: detect IPv4 addresses with port from listening sockets
- topo_group: use node_name for display in routes
- Makefile.am: add socket_monitor.c to build
2026-08-02 12:16:42 +03:00
evgeny 7799d54c0c conn_mgr: обновить API на единую точку входа conn_mgr_open_invite, поправить порядок destroy, обновить всех потребителей
- conn_mgr_cb_t: 5 параметров (h, node_id, group_id, event, arg)
- conn_mgr_open_invite: единая функция (ni=NULL — обычное, ni!=NULL — invite)
- CONN_EVENT_JOIN для успешного invite
- struct CONN_MGR_HANDLE: добавлен group_id
- bind/unbind в conn_mgr_init/destroy (один на инстанс, перезапись безвредна)
- utun_instance_destroy: conn_mgr_destroy до закрытия сокетов
- cm_ncd_callback: занулять ncd_handle при DOWN, защита от вызова после destroy
- topo_group_connect: свой трекинг handle'ов, conn_mgr_close для отмены
- обновлены: topo_recovery, media_download, media_delivery, chat_sync, тесты
2026-08-01 17:52:56 +03:00
evgeny d310bccf08 fix: memory pool alloc mismatch in tests, db_sync SEND_DATA buffer overflow
- test_etcp_router_reconnect, test_etcp_connect, test_stcp_traffic:
  replace u_calloc with memory_pool_alloc for TOPO_SOCKMETA4/TOPO_ADDR4
- db_sync.c: fix req[14] -> req[15] — SEND_DATA request header is 15 bytes
  (type:1 + from:4 + count:2 + vp:4 + want_from:4)
2026-07-31 21:44:44 +03:00
evgeny b8920cf483 chat_settings: [chat] config section + live sync + fix test segfault
- New chat_setting.c/h: unified chat settings API (int/str getters)
- Config parser supports [chat] section, calls chat_setting_set per key
- chat_core exposes chat_core_set_setting / trampoline for GUI bridge
- chatgui: AudioDevice + Storage pages persist to [chat] config + live apply
- chatgui-android: ConfigProvider, NativeLib, headless handle chat settings
- MessageList: 200 msg limit, fixed saveChannelState via trampoline
- test_media_delivery_full: fix segfault at shutdown (mon() timer vs freed conns)
2026-07-29 21:18:49 +03:00
evgeny fb3e34080d media_delivery: implement full media delivery subsystem (stages 1-8)
- topo_group: add BGP node event callbacks (NEW/UPDATE/REMOVE)
- member_sync: add multi-subscriber node_props_changed callback (adm_tags)
- media_delivery: SQLite tables (block_availability + super_sync), full protocol handler
- media_delivery_proto.h: packed protocol structures (15 subcommands)
- media_download: download management, chunk streaming, block assembly, HAVE_BLOCK with retry
- Makefile.am: add media_download.c to builds
2026-07-29 17:14:32 +03:00
evgeny 65dbfa6813 feat: media_async + media_index modules, media_files table, tests
- media_async: thread-per-task async engine with primitives (sha256, sign, copy, uuid, file_size)
- media_index: media_files DB table with register_async for indexing chunks
- chat_msg: async media submission via register_async, simplified chat_msg_submit fields
- voice_recorder/attachment_sender: write single file (no chunk splitting on caller side)
- inputbar/messagelist: updated to new simplified submit interface
- test_media_async: 4-thread stress test (200K ops / 2 sec, 0 errors)
- test_media_index: 9 cases covering commit edge cases + async flow
- build: Makefile.am, CMakeLists.txt, utun_sources.cmake updated
2026-07-29 14:15:10 +03:00
Evgeny ed6132fcda перенос chat-логики из chatgui/transport в src/chat/
- Создан src/chat/ с chat_event.h/c — система нотификаций
- Перенесены chat_core, chat_msg, chat_channel, chat_profile, chat_status
- Перенесены chat_sync, member_sync, merkle_sync, db_sync
- gui_bridge_post() заменён на chat_event_post() с возможностью регистрации обработчика
- chat_event_set_handler() — chatgui регистрирует мост в gui_bridge
- Без обработчика: события логируются через DEBUG_DEBUG + log_dump
- chat интегрирован в utun_instance.c (при db_path в конфиге)
- Обновлены include-пути, Makefile.am, CMakeLists.txt
- Из chatgui удалены старые transport/ файлы, обновлён utun_node.cpp
2026-07-27 12:58:33 +03:00
Evgeny 4fde0b0325 feat: integrate Opus codec into lib/libopus + voice messages in chatgui
- Add lib/libopus/ (opus v1.6.1 embedded source: CELT 18 .c, SILK 77 .c, SILK float 28 .c, OPUS core 14 .c)
- Add lib/opus_codec.h/.c (wrapper: encoder, decoder, raw PCM int16)
- Add tests/test_opus_codec.c (7 tests: silence, sine, compression, PLC, null, defaults, multi-frame)
- chatgui: AudioRecorder (miniaudio capture, 48kHz mono)
- chatgui: VoiceEncoder (PCM→Opus file with custom container)
- chatgui: VoicePlayer (Opus→PCM playback via SoundManager)
- chatgui: PTT button in InputBar, voice message send/receive in MessageList
- chatgui: AudioDeviceSettingsPage (device selection, persisted in ui_state)
- chatgui: MessageDelegate voice message rendering (play button + duration)
- Update autotools: configure.ac, Makefile.am, src/Makefile.am, tests/Makefile.am
- Update CMake: chatgui CMakeLists.txt, libutun CMakeLists.txt (link libopus_internal.a)
2026-07-26 20:34:38 +03:00
Evgeny 6edd40d141 topo_group_connect: авто-подключение CHAT-групп + conn_mgr_connect_from_invite + замена chat_conn_mgr в chatgui
Добавлено:
- conn_mgr_connect_from_invite() — подключение к новому узлу по invite-данным
  (INIT → INVITE_INFO_REQ/RESP → проверка членства в группе → сохранение в БД)
- topo_group_connect.c — авто-подключение при старте CHAT-группы:
  Phase 1: одновременный connect всех connected=1 пиров, таймаут, отмена незавершённых
  Phase 2: последовательный перебор публичных адресов до первого успеха
- Счётчик active_conn_count с проверкой nodeinfo-путей (UP/DOWN)
- restart() при phase=DONE и count==0

БД:
- connected INTEGER NOT NULL DEFAULT 0 в peers_<ch> + ALTER TABLE для существующих
- topo_node_sqlite_set_connected / get_connected_peers / get_public_peers

Chatgui:
- Включён topo_group (убран utun_instance_set_topo_group_enabled(0))
- Создание TOPO_GROUP_TYPE_CHAT при channel_ready и при старте
- Invite connect через conn_mgr_connect_from_invite
- Удалён chat_conn_mgr (из сборки) + весь старый auto-connect код
2026-07-22 22:48:12 +03:00
Evgeny 4215349349 topo_recovery: каскадное восстановление узлов с группировкой по next_hop
При разрыве ETCP-соединения модуль собирает каскадно отвалившиеся узлы:
- add_node из hop_list вычисляет next_hop относительно failed_peer,
  группирует узлы в отдельные recovery-контексты (direct/indirect списки)
- start запускает асинхронный перебор для каждой группы параллельно
- is_next_hop-узел пробуется первым с приоритетом по мин. RTT
- таймаут 2с на попытку, conn_mgr_cancel_callback при отмене
- отмена: topo_group_new_conn (on_up) находит узел в любом ctx -> ctx целиком
- завершение: оба списка пусты -> освобождение ctx
2026-07-22 19:01:55 +03:00
Evgeny 852ce401e7 Добавлен group_id в etcp_router и topo_group, удалён msg_transport
- etcp_router: SVC_ROUTE_HDR (+8B), ETCP_ROUTER_CONN/TRANSIT_QUEUE хеши расширены под group_id
- Все caller'ы (proxy, routing, conn_mgr, nat, chatgui, tests) обновлены
- topo_group: глобальный реестр TOPO_NODE по node_id, ref_count=0 при создании
- BGP-обмен активируется для всех групп (а не только дефолтной)
- Протокол: group_id добавлен в WITHDRAW/TABLE_REQ/TABLE_COMPLETE/ERR_GROUP_MISMATCH
- Per-connection коллбэки заменены на instance-level conn_status
- msg_transport полностью удалён из проекта
57/57 тестов
2026-07-22 15:51:03 +03:00
Evgeny fcf3fb7f51 refactor: move transport (etcp/stcp/normalizer) to transport_layer/, routing (bgp/pings/topo*) to routing_layer/ 2026-07-21 20:25:41 +03:00
Evgeny 910cac8dce refactor: separate NAT detection from topology into standalone nat_detection module
- Extract NAT detection logic (~250 lines) from topo_group.c into new nat_detection.c
- NAT_DETECTION struct owns ping_pending, next_ping_req_id, allow_nat_check_local (removed from TOPO_GROUP)
- route_ping.* signatures changed: TOPO_GROUP* -> NAT_DETECTION* (+ TOPO_GROUP* where needed)
- topo_group.c now only dispatches BGP subcommands to nat_detection_* handlers
- UTUN_INSTANCE gets struct NAT_DETECTION* nat_det field (init/destroy in topo_groups_init/destroy)
- External callers (etcp_connections, etcp, control_server) call nat_detection_* directly
- nat_detection_cancel_for_conn / nat_detection_send_nat_info / nat_detection_link_ready / nat_detection_request_check_all
- route_ping_destroy_pending properly implemented (was dead code)
- TOPO_SUBCMD_PING_REQ/RESP moved from route_ping.h to topo_group.h (all BGP subcommands in one place)
- Tests updated: test_nat_detection, test_route_ping - both PASSED
- Build: auto(CORE_SOURCES+libutun) and cmake(chatgui/libutun)
2026-07-17 19:49:54 +03:00
Evgeny dccf54b30b auto-connect + GUI per-channel indicators
- chat_core_connect_auto: direct ETCP connect from SQLite (no BGP)
- auto_connect: parallel connect to peers with 3s timeout, retry 10s
- RTT saved to node_addresses on disconnect
- vertical status bar + circle badge with online count per channel
- ChannelListView prevents deselection
2026-07-15 06:00:43 +03:00
Evgeny 1a0229fd4f add NTP time synchronization module 2026-07-14 20:14:00 +03:00
Evgeny f617dcd68e db_sync: LMDB→SQLite, multi-instance, etcp_api, chatgui integration
- src/db_sync: LMDB replaced with SQLite (separate tables per instance: db_sync_name_id)
  TTL index (author, timestamp), WAL mode, per-instance peers/timers
  opaque DB_SYNC_INSTANCE* handle, insert callback, select API
  new fields: author_signature, delivered_peers, delivery_chain
  transport: etcp_api direct P2P (was etcp_router)

- src/db_sync.h: user-oriented API docs, multi-instance lifecycle

- lib/Makefile.am: liblmdb sources removed
- lib/sqlite3.c+h: SQLite amalgamation added

- topo_node: LMDB→SQLite (src/topo_node_sqlite.c moved from chatgui)

- chatgui: real db_sync.c replaces db_sync_stub.c
  chat_core: db_sync_insert_signed + dual-write insert callback
  utun_node: db_sync_init/destroy replaces chat_sync_init/destroy
  CMakeLists: stubs removed, real db_sync.c added
2026-07-14 14:17:43 +03:00
Evgeny 28e5950d29 TOPO_BGP -> TOPO_GROUP: multi-group support
- Renamed TOPO_BGP to TOPO_GROUP with topo_group_id (64bit)
- Added TOPO_GROUPS container (ll_queue group_list) in UTUN_INSTANCE
- Memory pools moved from TOPO_GROUP to TOPO_GROUPS (instance-level)
- Default group: TOPO_GROUP_UTUN = 0x8000000000000000
- topo_groups_get_default() searches by group_id, not just first entry
- All topo_bgp_* renamed to topo_group_*; function signatures updated
- Files: topo_bgp.h/c -> topo_group.h/c
2026-07-09 18:08:49 +03:00
Evgeny 3c3d9a65d9 refactor: переименование route_node/route_bgp в topo_node/topo_bgp
Файлы: route_node.* route_node_lmdb.* route_bgp.* -> topo_node.* topo_node_lmdb.* topo_bgp.*

Структуры:
- ROUTE_BGP -> TOPO_BGP, ROUTE_BGP_CONN_ITEM -> TOPO_BGP_CONN_ITEM
- NODEINFO -> TOPO_NODE, NODEINFO_Q -> TOPO_NODEQ, NODEINFO_PATH -> TOPO_NODEPATH
- NODEINFO_ROUTES -> TOPO_NODESUBNETS, NODE_CONNECTIVITY -> TOPO_CONNECTIVITY
- wire: NODEINFO_MSG -> TOPOMSG_NODE, NODEINFO_IPV4_* -> TOPOMSG_*4 и т.д.
- memory: NI_IPV4_* -> TOPO_*4, NI_IPV6_* -> TOPO_*6
- ROUTE_SUBCMD_* -> TOPO_SUBCMD_*, ETCP_ID_ROUTE_ENTRY -> ETCP_ID_TOPO_ENTRY

Функции:
- route_bgp_* -> topo_bgp_*
- nodeinfo_* -> topo_node_*
- route_node_* -> topo_node_*
- route_node_lmdb_* -> topo_node_lmdb_*

Смысл: отделение механизма формирования топологии узлов от IP-роутинга.
2026-07-09 17:01:56 +03:00
Evgeny 8756f561be build: extract libutun.a from src/ + add db_sync module + etcp API, BBR improvements
- Add libutun.a (noinst) containing all src/*.c except utun.c
- utun binary now links libutun.a + libuasync.a
- tests/Makefile.am simplified: all tests link libutun.a instead of
  manual .o file lists (removed ~70 lines of boilerplate)
- Add db_sync module: distributed content-addressed DB with LMDB
  backend, peer-to-peer sync via etcp_router (svc 0x20)
- etcp API: etcp_send_in_order(), etcp_clear_inflight_queues(),
  verify_packet_signature(), BBR getters
- BBR: adaptive threshold (1/4 of pipe-min instead of hardcoded)
- route_bgp/etcp_connect: STCP transport support in NODEINFO
- conn_mgr: NODEINFO_ADDRS doc for nat_type/transport/proto fields
- Cleanup: removed AUDIT_FINDINGS.txt, filelist.txt, nat.txt
2026-07-06 11:42:13 +03:00
Evgeny 0b5a710fe6 etcp_connect + BGP_READY callbacks + router reconnect test
- etcp_connect.c: async connect API with EARLY/LATE/BGP_READY callbacks
- etcp_connect.h: declaration (via etcp_api.h)
- connect_deliver: fix to preserve unfired callback nodes
- etcp_set_routing_exchange_state: fires bgp_ready_cbk on TABLE_COMPLETE
- route_bgp: TABLE_COMPLETE handler + route_bgp_send_table_complete
- etcp.c: connections_count tracking, cleanup on close
- test_etcp_router_reconnect: a-b-c topology with b restart (etcp_connect)
- test_etcp_connect: unit tests for async connect API
- etcp_router: inflight/retrans/close improvements
- Various proxy/NAT/router cleanups
2026-07-04 18:51:01 +03:00
Evgeny 393a641e18 socks/http proxy client: SOCKS5 + HTTP CONNECT через ETCP
Добавлен модуль socks_proxy.c/h — SOCKS5 и HTTP CONNECT proxy на клиенте.
Использует tcp_io для локальных TCP соединений, туннелит трафик через
существующий ETCP-протокол (ETCP_ID_TCP_PROXY/ETCP_ID_TCP_PROXY_CLIENT).

Конфиг [tcp_proxy_client]:
- socks_enabled/socks_addr — включить SOCKS5 сервер на указанном IP:PORT
- http_proxy_enabled/http_proxy_addr — включить HTTP CONNECT сервер
- Можно включать TUN, SOCKS и HTTP прокси одновременно или раздельно

Весь трефик идёт через exit node (tcp_proxy_server), менять exit не пришлось.
2026-07-01 20:33:11 +03:00
Evgeny a7b20f268f feat: conn_mgr, dummynet block-addr, indirect routing, alien nodes, nodeinfo refactor 2026-06-29 20:01:40 +03:00
Evgeny 62b3695a77 chatgui: rlottie animated emoji with hover-to-animate, drag-to-select
- Add LottieIcon class (TGS gzip decompress + rlottie C API render)
- Add AnimTimer singleton (33ms tick, activate/deactivate refcount)
- Add EmojiButton (hover-triggered animation in emoji picker)
- Add AnimatedEmoji support to EmojiData (5 TGS mappings)
- MessageDelegate: QTextLayout-based animated emoji overlay (text + reactions)
- ChatView: drag-to-select (click deselects, 5px drag starts selection)
- ChatView: hoveredIndexChanged signal for hover-triggered animations
- MessageList: wire AnimTimer tick to viewport update, hover → activate
- CMake: AUTORCC, rlottie, zlib dependencies
- Add 5 TGS animations as Qt resources
2026-06-24 13:45:25 +03:00
Evgeny 6717c863e7 etcp_router: Ed25519 digital signature for service messages
- Add ed25519_public_key[32] to NODEINFO struct for pubkey distribution
- Add ed25519_public_key[32] to ROUTE_BGP (derived from X25519 privkey at init)
- Add ROUTER_FLAG_SIGNED (0x08) to SVC_ROUTE_HDR flags byte
- router_send_one_flags: when is_signed, sign [hdr][payload] and append 64-byte sig
- etcp_router_recv_cb: verify Ed25519 signature when ROUTER_FLAG_SIGNED set
- New API: etcp_router_conn_send_signed()
- Drop signed packets if sender node not in routing table or no Ed25519 key
- 5 unit tests in test_etcp_router_unit.c covering OK/tampered/unknown/no-key/short
2026-06-22 15:53:24 +03:00
Evgeny 73f707ef9b crypto: migrate ECDH(secp256r1) to X25519, drop TinyCrypt
- SC_PUBKEY_SIZE: 64 -> 32 bytes, SC_PUBKEY_ENC_SIZE: 72 -> 40
- sc_set_peer_public_key uses EVP_PKEY_derive with X25519
- sc_generate_keypair via EVP_PKEY_keygen(EVP_PKEY_X25519)
- sc_compute_public_key_from_private via EVP_PKEY_new_raw_private_key
- sc_validate_key: check non-zero (X25519 has no invalid keys)
- sc_obfuscate_pubkey: XOR now 32 bytes
- Remove all TinyCrypt code (~860 lines), always use OpenSSL
- Remove TinyCrypt from build system, drop test_crypto/test_ecc_encrypt
- Update all test keys (128 hex -> 64 hex)
- Fix bbr_integration.c split-line pubkeys
2026-06-17 21:28:07 +03:00
Evgeny 150e9977df stcp: unified transport — etcp_send/bind over TCP via stcp_link
- stcp_link.h/c: manage TCP connections through STCP protocol
  stcp_server_listen, stcp_link_connect/send/close
  rx dispatch goes directly through inst->api_bindings (single table)
- etcp_api.c: etcp_send checks conn->transport_link for TCP path
  etcp_bind stores only in api_bindings (no duplication)
- etcp_connections.c: init_sockets creates stcp_server for TCP
  init_connections creates stcp_link_connect for TCP clients
  tcp_server_on_link creates minimal ETCP_CONN + fires callbacks
- etcp.h: ETCP_CONN.transport_link field (NULL for UDP, set for TCP)
- config_parser: CFG_SERVER.transport field, parsing transport=tcp|udp
- utun_instance.h: struct stcp_server*
- Tests: test_stcp_link (handshake, wrong key)
         test_etcp_stcp (etcp_send/bind over TCP)
- Renamed: transport.h/c → stcp_link.h/c (cleaner, no bindings table)
- 46/46 tests pass
2026-06-16 01:19:58 +03:00
Evgeny f913bdf351 stcp: streaming TCP module + stream cipher + comprehensive tests
- secure_channel: add sc_stream_state + sc_stream_init/sc_stream_xor/sc_stream_cleanup
  AES-128-CTR streaming cipher for incremental encrypt/decrypt
- stcp.h/c: shared stcp_conn lifecycle, set_on_close, rx/tx queue setup
- stcp_server: listen/accept, handshake (obfuscated pubkey + ECDH + stream), DATA phase
- stcp_client: connect, handshake, DATA phase
- Protocol: key_block(72) + enc(data+crc) + padding for handshake
           size(2 LE) + enc(data+crc) for data messages
- Tests: test_stream_cipher (AES-CTR correctness)
         test_stcp (6 cases: sizes 0..65535, 200 msgs, wrong key,
                    close detection, multi-client, interleaved send/recv)
- Fix: 0-length message handling in tx_queue callbacks
2026-06-14 10:00:02 +03:00
Evgeny 1f4fe37fe5 proxy: rename + simplify + backpressure
- tcp_proxy/remote_proxy → tcp_proxy_client/tcp_proxy_server
- Все proxy файлы перенесены в src/proxy/
- Конфиг: [tcp_proxy]→[tcp_proxy_client], [remote_proxy]→[tcp_proxy_server]
- Убран subcmd CONNECTED (0x02) — клиент шлёт DATA сразу после CONNECT
- Backpressure: etcp_router_waiter_register/cancel через ll_queue threshold waiter
- Клиент: recv_cb send fail → tx_buf+waiter, не tcp_recved() (окно lwIP=0)
- Сервер: read_cb send fail → pause_buf+waiter, пауза read_id
- CLOSE/ERROR отправляется только после drain всех очередей
- Fail: conn не найден/closed → send ERROR вместо CLOSE/silent drop
- PROTOCOL.md: полная архитектура с диаграммами состояний и потоков
2026-06-02 18:02:37 +03:00
Evgeny 6c79939db3 congestion: заменить AIMD на BBR v3 (per-link), добавить юнит-тесты BBR
- Новые файлы: src/etcp_bbr.h/c — полный порт BBR v3 из BBR/bbr_v3.c (референс сохранён)
- struct ETCP_LINK: удалены AIMD-поля (rtt_history, rtt_swm, stat_win, stats_timer, inflight_phase...), добавлены bbr*, delivered_bytes, bbr_pacing_rate
- struct INFLIGHT_PACKET: +3 поля для rate_sample (delivered_at_send, inflight_at_send, is_app_limited)
- etcp_ack_recv: вызов bbr_main() с rate_sample, обновление inflight_lim_bytes и pacing
- etcp_request_pkt: заполнение BBR rate_sample полей при отправке
- Шейпер: bandwidth обновляется из bbr_pacing_rate
- Конфиг: inflight_min/max заменены на bbr_max_cwnd
- Дамп: BBR поля (mode, cycle, pacing, min_rtt_us, bw_hi/lo, inflight_hi/lo)
- Time injection: bbr->now_tb для детерминированных тестов
- tests/test_etcp_bbr.c: 8 юнит-тестов (init, startup, full_bw/drain, loss, cwnd cap, loss cut, fast_path, probe_rtt)
- Отключены test_etcp_congestion и test_etcp_reinit_inflight (старый congestion control)
- 40/40 тестов пройдено
2026-06-01 12:58:31 +03:00
Evgeny c05e1c9991 replace uIP with adapted lwIP TCP stack (lwip_tcp)
- Replace uIP (src/uip/) with adapted lwIP 2.1.x TCP module
- Remove original src/lwip/ (replaced by src/lwip_tcp/)
- New src/lwip_tcp/ module: lwip_pbuf, lwip_tcp core/in/out
- Full TCP state machine, sliding window, congestion control
- Fast retransmit/recovery, Van Jacobson RTT estimation
- Nagle algorithm (TF_NODELAY), delayed ACK
- OOSEQ reassembly, TIME-WAIT handling
- Memory: memory_pool for PCB, listen PCB, tcp_seg
- Timers: uasync periodic timer drives fast/slow timers
- Output: callback-based IP packet output (TUN/raw-fd)
- Error codes: LERR_ prefix to avoid conflicts
- pbuf: simplified PBUF_RAM with proper header space reservation
- Integrate into tcp_proxy.c/h with per-pcb callbacks
- Active connection API: struct proxy_conn* instead of int conn_idx
- Makefile: remove uip, add lwip_tcp files
- test_tcp_proxy updated for new API; test_tcp_proxy_remote disabled
- Known: test_tcp_proxy data transfer needs flow tuning (WIP)
2026-05-11 22:51:48 +03:00
Evgeny a6311a17d0 add UDP/ICMP proxy, refactor tcp_proxy via_node to instance-level
- UDP proxy: datagram relay client↔exit over ETCP
- ICMP proxy: echo ping relay client↔exit over ETCP
- Move via_node_id from per-forward-mapping to global tcp_proxy setting
- Support multiple concurrent tcp_proxy instances (no singleton g_tcp_proxy)
- Cap handshake padding to stay within 1472+overhead
- Handle non-TCP packets (UDP/ICMP) in tcp_proxy raw/tun input paths
- Add utun_instance_create_from_str() for test config creation
2026-05-11 18:37:36 +03:00
Evgeny c24a6367cc add IPv6 default route interface auto-detection for permanent/temporary IPv6 without netif
- get_default_route_netif_index(): UDP connect trick + getifaddrs to find default route iface
- etcp_socket_add(): auto-detect netif_index when not specified in config
- queue_new() API: explicit index_offset/index_size params instead of implicit from hash_size
- radix: cleanup types (uint8_t*), replace bzero/bcmp with memset/memcmp, remove kernel ifdefs
- route6_lib: new IPv6 routing library + get_node_v6_routes()
2026-05-10 00:05:23 +03:00
Evgeny 9869cf66f1 add etcp_router service routing layer + remote TCP proxy (uip+socket via router)
etcp_router: routable service packets with dst/src node_id
- etcp_router_bind/unbind: per-instance service handler registry
- etcp_route_send: send to node by id via BGP routing
- multi-hop forwarding through intermediate nodes
- loopback optimization (dst==self dispatches directly)

remote_proxy: exit node creating OS sockets on demand
- handles CONNECT/DATA/CLOSE via etcp_router
- non-blocking socket connect with uasync callbacks
- echo back response data to requesting node

tcp_proxy: etcp_transport for remote proxy
- via_node_id in mapping selects between sock/etcp transport
- unified handler for both tcp_proxy and remote_proxy roles
- config: forward = port -> ip:port via NODE_HEX [remote_proxy] section

tests: test_etcp_router (20 pkts bidirectional), test_remote_proxy (echo)
2026-04-28 20:01:12 +03:00
Evgeny dea3a39598 fix: reconnect test — cancel timers in conn_reset, add init_timer cancel on link_state=3, add reinit resilience to test
- etcp_conn_reset: cancel retrans_timer/ack_resp_timer via uasync_cancel_timeout
  before nulling (was leaking timer handles, confirmed by 'Timer leak: diff')
- etcp_connections: cancel link->init_timer explicitly when link_state becomes 3
  on both client and server INIT_RESPONSE paths (prevents spurious INIT after
  connection is established that could trigger cascading reinits)
- etcp_connections: remove duplicate conn->session_id assignment in new conn path
  (session_id is set later via conn_reinit flow)
- pkt_normalizer: resume output queue callback after pn_reset
- Add test_etcp_reconnect with reinit detection — monitors conn->reinit_count
  and restarts data transfer if reinit occurs during active phase
- Add etcp_dump.c/h — ETCP connection state dump utility for debugging
2026-04-27 19:46:45 +03:00
Evgeny 61fee27478 congestion: burst-based BW measurement + adaptive inflight (slow start/cong avoidance/loss response)
New features:
- get_time_us() in lib/u_async.c/h for µs-precision timing
- Burst measurement (ETCP_SECTION_MEAS_TS 0x07, MEAS_RESP 0x08, FILLER 0x09)
  - 12 MTU packets sent at line rate, receiver measures inter-packet gaps
  - Burst triggered when link saturated + min 500ms interval
  - Result: measured BW -> bandwidth for shaper, burst_target_bdp for window cap
- 3-phase adaptive inflight in link_stats_timer_cb:
  - Slow start: windows doubles each RTT, exits on loss/RTT spike/threshold
  - Congestion avoidance: additive increase, proportional RTT shrink, multiplicative loss shrink
  - Burst target cap: inflight_lim <= burst_target_bdp * 1.1
- Dynamic optimal_inflight = sum(link->inflight_lim_bytes), recalculated on change
- Adaptive win_timebase = rtt/2 (was hardcoded 10ms)

Fixes:
- dummynet.c: shaper formula fixed (80000 -> 80)
- dummynet.c: queue_data_put call fixed (3 args -> 2)
- etcp.c: SIZE ERROR format string (missing log_name argument)
- etcp_request_pkt: FILLER leaves room for PAYLOAD overhead

Tests:
- test_etcp_congestion.c: single-threaded, 5-phase BW/delay/loss test
  - sender + receiver + dummynet in one uasync
  - CSV metrics output every 100ms
- All 29 existing tests pass
2026-04-26 00:17:32 +03:00
Evgeny 9c509d4c86 add connectivity probing + NAT type rename OPEN->EIM, RESTRICTED->STRICT
- Rename NAT types: OPEN->EIM, RESTRICTED->STRICT across all code
- Add flat addr list {type,ip,port,socket_id} to NODEINFO (NODEINFO_IPV4_ADDR)
- Add NODEINFO_IPV4_SOCKET_META for per-socket metadata
- Add NODE_CONNECTIVITY with per-type probe status and min_rtt
- New module: route_connectivity.c/h (probing engine with socket fallback)
- STRICT verified addresses excluded from NODEINFO broadcast
- Trigger probing on new/updated BGP node, cancel on remove/withdraw
- Update NAT type names in etcpmon GUI
2026-04-25 18:41:45 +03:00
Evgeny 907ef244c6 NAT: Full Cone (EIM) NAT with ETCP_ID_NAT protocol, per-node routing, and comprehensive test suite
- New ETCP protocol ETCP_ID_NAT (0x02) for NAT traffic between nodes
- eim_nat.c/h: Pure NAT engine (table, port allocation, checksum updates, egress/ingress)
- nat_transport.c/h: Transport layer (NAT TUN, ETCP binding, client/provider roles)
- route_bgp_find_conn_for_node(): shared utility for optimal connection lookup
- tun_init_nat(): dedicated TUN creation for NAT
- Config: [nat] section with tun_ip, port_start/end, nat_via, forward rules
- Fix: csum_update_ip/transport use htonl() halves (correct on LE systems)
- Fix: IP_FRAG_MF_MASK changed to 0x2000 (after ntohs, MF is bit 13)
- Tests: 26 engine unit + 4 transport integration + 7 stress (29 total)
2026-04-25 00:43:25 +03:00
Evgeny ffbc0da86f add ping 2026-04-13 20:12:13 +03:00
Evgeny 5c9e9ba144 route: transition from BGP_ROUTE_PACKET to NODEINFO based routing
- Added paths list to NODEINFO_Q structure
- Updated route_bgp.c/h with NODEINFO packet handling
- Updated routing.c with new routing logic
- Updated route_lib.c/h with NODEINFO support
- Updated utun_instance.c for new routing changes
- Updated Makefile.am with new source files
2026-03-29 20:33:57 +03:00
Evgeny 9517454ee6 firewall + random init pkt size 2026-03-26 22:42:22 +03:00
Evgeny 362a9a4a45 1 2026-03-08 19:59:42 +03:00
Evgeny 0e61029231 1 2026-03-08 19:55:59 +03:00
Evgeny 2f12150c31 1 2026-03-08 19:45:58 +03:00