utun2

Commit Graph

Author	SHA1	Message	Date
evgeny	6337d0f608	tests: add -I$(srcdir) to AM_CPPFLAGS for test_utils.h in VPATH builds	2 months ago
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	2 months ago
evgeny	ec9edb6a7c	Add test_etcp_link_stress: dynamic socket/link add/remove during traffic - 2 instances, 1 initial UDP connection, 2000ms stress test - Sends 1 packet every 1ms during stress - Every 100ms: adds new UDP/TCP socket+link, removes oldest with stats - Liveness check per cycle detects hangs - Per-link report: type, state, decrypted/encrypted/acked bytes, retrans, RTT - Removal stats: lifetime, encrypted, decrypted, acked, retrans, RTT, inflight	2 months ago
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	2 months ago
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)	2 months ago
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)	2 months ago
evgeny	51d6c782ac	voice playback: miniaudio cursor ground truth + EMA smooth decay - SoundManager: add currentPcmCursor()/isCurrentPcmPlaying() via ma_sound_get_cursor_in_pcm_frames / ma_sound_is_playing - messagedelegate: replace wall-clock position tracking with real miniaudio cursor, remove 200ms hardcoded delay - messagedelegate: end-of-playback detection via isCurrentPcmPlaying() instead of wall-clock comparison (was killing audio ~200ms early) - messagedelegate: EMA smoothing of displayFrac/displayElapsed (0.15 factor, 16ms timer) - messagedelegate: timer continues after audio stops to animate EMA decay to 0 (not mouse-move dependent) - media_delivery: download progress callback, Ed25519 sig verify, author fallback, content hash check - conn_mgr: already-connected returns OK with callback instead of error - chatgui: voice download-pending auto-play, file download progress bar, media bar colors	2 months ago
evgeny	57e6ffed16	media_delivery: admission control + OVERLOADED + full integration test - MEDIA_BLOCK_OVERLOADED (0x0F) subcommand + packed struct - Admission control: track active_streams, reject > 3 with OVERLOADED - media_delivery_stream_done() to decrement counter after stream finish - Auto-download trigger in chat_msg.c (parse media metadata, check settings) - test_media_delivery_full.c: 9/9 tests on 4 instances (SUPER_HELLO, HAVE_BLOCK, replication, admission control, OVERLOADED) - All 33 existing tests still pass (15+5+4+9)	2 months ago
evgeny	5e739176fa	media_delivery: fix etcp_route_send svc_id + integration test Root cause: etcp_route_send reads dgram[0] as svc_id, not subcmd. router_deliver prepends svc_id byte on receive. Fixes: - md_send/md_dl_send/msend: prepend ETCP_RT_ID_MEDIA_DELIVERY to dgram[0] - md_etcp_recv: read subcmd from data[1] (was data[0]) - etcp_api.h: document dgram[0]=svc_id convention - media_delivery_set_supernode(): public API for dynamic switching Tests: - test_media_delivery_integration: 4/4 (SERVE_REG, HAVE_BLOCK, supernode stop/start) - All 24 existing tests still pass	2 months ago
evgeny	a863da7737	media_delivery: add tests + fix queue_new NULL ua and index_offset bugs - test_media_delivery_sql: 15 tests (SQL tables, CRUD, packed structs) - test_media_delivery_download: 5 tests (chunk write/append, sig verify, assembly, cancel) - Fix: queue_new(NULL) returns NULL — pass inst->ua everywhere - Fix: queue index offset must be offsetof(struct, key_field) not 0 - Move struct media_download to header for test visibility	2 months ago
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	2 months ago
evgeny	90de87b13d	move audio_compressor from libutun_lite/ to lib/ — shared library - audio_compressor.h/c moved to lib/ (alongside opus_codec, mem, debug_config) - lib/Makefile.am: added to libuasync_a_SOURCES - utun_sources.cmake: removed from _cfg_src (GLOB from lib/ picks it up) - tests/Makefile.am: test_audio_compressor added to check_PROGRAMS - test includes simplified (debug_config.h, mem.h — lib/ in include path)	2 months ago
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	2 months ago
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)	2 months ago
Evgeny	a1ecab997e	merkle_sync: fix 4 protocol bugs + add test suite (Stages 1-4) - g_merkle singleton → per-instance msync (utun_instance.h) - level_prefix: off-by-one shift (63→64) - _handle_hashes: differs \|= for shared buckets with different hashes - _handle_batch: sub_pl double-level-offset (next_lvl→lvl) - pending[] array replaces pending_requests counter - member_sync: mask_shift 63→64 alignment - test_merkle_sync.c: prefix arithmetic, tree building, 2-instance integration, randomized 50-iter sync	2 months ago
Evgeny	fcf3fb7f51	refactor: move transport (etcp/stcp/normalizer) to transport_layer/, routing (bgp/pings/topo*) to routing_layer/	2 months ago
Evgeny	960cde3eda	chatgui: add Status page in settings (NTP + connections status)	3 months ago
Evgeny	bb425c6722	db_sync v2: positional sync per-peer (synced_pos), datahash instead of chain_hash, no cascade on PUSH, single cascade after SEND_DATA batch, startup chain verification. PRAGMA synchronous=NORMAL + wal_autocheckpoint=10000 for performance.	3 months ago
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	3 months ago
Evgeny	90ad64a106	stcp: add protocol field to NODEINFO addr structs, TCP support in etcp_connect, stcp traffic test - route_node.h: add NODE_PROTO_UDP/NODE_PROTO_TCP constants, protocol field in NODEINFO_IPV4_ADDR/NODEINFO_IPV6_ADDR - route_node.c: fill protocol for UDP sockets + TCP servers from config, update dumps - etcp_connect.c: create stcp_link for TCP-capable addresses, ready/close callbacks, cleanup - etcp_connections.c: store stcp_server_listen result in instance->stcp_server, fix socket init checks for TCP-only configs - utun_instance.c: use stcp_link_server_destroy (high-level API) instead of stcp_server_destroy - tests/test_stcp_traffic.c: 2 nodes via etcp_connect+TCP, 1MB bidirectional traffic (10-1800 byte pkts)	3 months ago
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	3 months ago
Evgeny	6c938ed2ba	test_etcp_router: dummynet congestion test + timer leak fixes - test_etcp_router: full rewrite with dummynet proxy, congestion cycles (fill inflight to backpressure, push 20 packets through, release shaper) bitmap tracking (0 loss, 0 dup, 0 corrupt checks), timing diagnostics - Makefile.am: add utun-dummynet.o to test_etcp_router LDADD - conn_mgr: fix cm_exch_probe timer leak (NULL callback → retry_cb), clean exchange_pending in cm_entry_destroy + conn_mgr_destroy - utun_instance: add stcp_server_destroy() call in utun_instance_destroy	3 months ago
Evgeny	ccdbab95a8	fix: use-after-free in pkt_normalizer + ll_queue waiter cancel + uasync gen counter for epoll fd-reuse - pkt_normalizer: save recvpart->len before queue_data_put (may free synchronously) - ll_queue: save uasync_call_soon handle in queue_waiter_handle, cancel on free - uasync: generation counter in epoll data.u64 to skip stale events after fd reuse - uasync: keep fd_to_index mapping after socket_array_remove for inactive nodes - test: test_uasync_socket_race — 4 children × 200 iterations, currently flaky	3 months ago
Evgeny	a01e2f0899	tun_enabled config + socks/http stress test (50 reqs, 2 workers) - config_parser: tun_enabled в [global] (по умолчанию yes), не дефолтить tun_ifname если TUN не нужен - utun_instance: уважать tun_enabled, чистые дефолты tcp_proxy TUN - socks_proxy: фикс дэдлока — reply сразу после CONNECT, без ожидания DATA - utun.conf.sample: документирован tun_enabled, tun_ifname - test_socks_http_proxy: 50 запросов (SOCKS+HTTP), 2 воркера параллельно, файлы 1k..100k, сверка через cmp, python http.server + curl	3 months ago
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.	3 months ago
Evgeny	53d41d5c62	fix: use-after-free in route table — add route_delete before u_free in route_bgp_update_my_nodeinfo and route_bgp_process_nodeinfo, relax routes_overlap to allow hierarchical routes Root cause: when bgp->local_node was reallocated (changed=1), old route entries remained with stale v_node_info pointing to freed memory. The freed memory got reused by a BGP peer's NODEINFO_Q, causing route_lookup to return wrong node_id (b3b2b1b0afaeadac instead of local), which then failed at etcp_route_send with 'no BGP route' and dropped packets to 10.23.2.1. Changes: - route_node.c: route_delete(old) before u_free + route_insert(new) after alloc - utun_instance.c: remove duplicate route_insert (now atomic inside function) - route_bgp.c: route_delete before freeing old peer NODEINFO_Q - route_lib.c: routes_overlap now rejects only exact prefix+network duplicates - tests/Makefile.am: add route_lib.o to test_route6_lib	3 months ago
Evgeny	7c953c1929	bgp: add test_bgp_triangle + keepalive_adaptive config option - keepalive_adaptive=0 disables adaptive keepalive period growth, keeping it fixed at 200ms for faster timeout detection in tests - test_bgp_triangle: 5-node triangle topology test (6 phases): validates alternative path recording (fix#1), cascading node removal on full isolation, and full recovery - config generation via utun_instance_create_from_str() with pre-generated keys — no temp files needed	3 months ago
Evgeny	a7b20f268f	feat: conn_mgr, dummynet block-addr, indirect routing, alien nodes, nodeinfo refactor	3 months ago
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	3 months ago
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	3 months ago
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	4 months ago
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	4 months ago
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	4 months ago
Evgeny	63f019530b	feat: tcp_io library + uasync socket toggle + ll_queue empty_callback lib/u_async: uasync_set_socket_read/write — O(1) EPOLL_CTL_MOD toggle per socket lib/ll_queue: queue_set_empty_callback — one-shot deferred callback on queue drain lib/tcp_io: TCP connection management via uasync + ll_queue with pool alloc - read: direct recv into pool buffer, high/low water flow control - write: autofetch via ll_queue callback, partial send via write_buf - on_fin/on_error/on_flushed callbacks, FIN deferred until read_queue drained - getpeername for pre-connected socket detection tcp_proxy_server: migrated to tcp_io (22→13 fields, 437→270 lines, -7 functions) tests: test_tcp_io (5 tests), test_tcp_proxy_server rewritten for tcp_conn	4 months ago
Evgeny	331d43c6f7	fix: proxy ERROR loop, BBR test backpressure, O(1) u_free, test ordering - tcp_proxy: ERROR silently dropped (no ERROR->ERROR loop), Russian removed from logs - etcp_bbr: swap min(lo) and max(4mss) in bbr_bound_cwnd_for_inflight_model - test_etcp_bbr: fix cwnd comparison (packets vs bytes) - ll_queue: double-put detection (abort), Floyd cycle detection in consistency check - ll_queue: QUEUE_DEBUG commented out (was always-on, O(N) per put) - mem: u_free_impl now O(1) via doubly-linked list, double-free detection - bbr_integration: queue_waiter_wait + call_soon backpressure (threshold=1) - tests/Makefile.am: fast tests first, .log cleanup before run	4 months ago
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	4 months ago
Evgeny	4f0baa37db	bbr: исправить передачу потерь в BBR + пол для cwnd на уровне BBR_CWND_MIN_TARGETmss - etcp.c: rs->lost из link->bbr_loss_since_ack (был хардкод 0), вызов bbr_note_loss при ретрансмите - etcp_connections.h: поле bbr_loss_since_ack для per-link учёта потерь в байтах - etcp_bbr.c: везде где BBR_CWND_MIN_TARGET — умножить на mss (юнит-мизматч пакеты/байты) - bbr_quantization_budget, bbr_set_cwnd, bbr_bound_cwnd_for_inflight_model, bbr_probe_rtt_cwnd - bbr_init_lower_bounds: инициализация inflight_hi из cwnd (был ~0U навсегда) - control_server.c + etcpmon: экспорт BBR-метрик (bw_hi/lo, inflight_hi/lo, режим, потери) - tests/bbr_integration: интеграционный тест BBR (15с, 50ms/5%loss/1Mbit) с таблицей метрик - устранён death spiral BBR при высоких потерях: cwnd теперь не падает ниже 4mss	4 months ago
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	4 months ago
Evgeny	ac3cdd7739	etcp_router: simplified TCP — reorder recv_q, dedup, ACK timers, inflight control, per-(remote,svc) conn state - New SVC_ROUTE_HDR (packed struct, 22 bytes): cmd+dst+src+seq+svc_id - ETCP_ROUTER_CONN: state per (remote_node_id, svc_id), hash-indexed in router_conns - Reorder via recv_q (hash by seq), dedup with 32-bit circular compare - Periodic ACK (100ms), idle ACK (500ms), inflight limit via tx_seq - rx_acked - Legacy mode: no conn → direct delivery without reorder - etcp_router_conn_get/send/close API for seq-managed connections - Unit test test_etcp_router_unit: 18 tests, 3ms, no ETCP/sockets/BGP	4 months ago
Evgeny	7c71ef683c	add lwIP TCP stack test with fixes: rcv_wnd tracking, FIN compensation, tmr_phase dual-counter, trace ring buffer, stats counters	4 months ago
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)	5 months ago
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	5 months ago
Evgeny	a0e5446790	migrate NAT and DATA to etcp_router, fix warnings and destroy order	5 months ago
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()	5 months ago
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)	5 months ago
Evgeny	171e70a810	add inflight data return to normalizer on reinit + configurable inflight min/max limits + test	5 months ago
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	5 months ago
Evgeny	0f8df44b2b	build: out-of-tree VPATH build, tests run once with colored timing - Root Makefile: hand-written bootstrap delegating to build/ - Makefile.am: simplified to SUBDIRS + clean-local - build.sh: delegates to make, autoreconf only - tests: removed duplicate TESTS run, added colored [PASS]/[FAIL]/[SKIP] with timing - .gitignore: added /build/ for out-of-tree artifacts Result: 0 .o files in source dirs, 29/29 tests pass	5 months ago
Evgeny	d0d4199273	etcp: unified send hook via etcp_udp_send, remove loss_rate, add dummynet_filter inline mode, rewrite BGP test - Add etcp_udp_send_fn_t hook typedef, send_hook/send_hook_ctx fields to ETCP_LINK - Implement etcp_udp_send() wrapper — all UDP sends go through one point - Remove loss_rate from ETCP_SOCKET, CFG_SERVER, config parser, send path - Add dummynet_filter: inline send-hook with loss/delay, no proxy socket needed - Rewrite test_bgp_route_exchange: 3-node chain A(2 links)↔B↔C, 7 phases with dummynet_filter-based link failure/recovery simulation - Clean up tests: remove skeleton test_routing_mesh, 6 debug/stale test files - Refactor test_etcp_simple_traffic and test_pkt_normalizer_etcp (remove debug spam) - Fix test_etcp_two_instances: remove private field access, fix false PASS on timeout	5 months ago
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	5 months ago

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112 Commits (6337d0f6082006395d12bfb8ccf16d116a7a3249)