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Commit Graph
29 Commits
Author SHA1 Message Date
evgeny 123b47c612 Improve Android VAD lifecycle, audio settings and diagnostics 2026-10-04 14:36:52 +02:00
evgeny 20a1211e09 Add GPLv3 licensing and bundle third-party notices 2026-10-04 14:18:18 +02:00
evgeny a97e8bcc1f docs: update file inventory and module header contracts 
Refresh both AGENTS guides and clarify module purpose, usage, ownership, threading, return values and wire formats in headers. Remove the unused timeout_heap freed_count field and unimplemented getter.
 2026-10-04 13:10:01 +02:00
evgeny a73ae13df4 lwip/proxy: trace PCB lifetime in debug category, drop old noisy debug 2026-09-29 13:18:18 +03:00
evgeny 265421eb96 tun proxy: фикс TCP-суммы (нечётный pbuf), FIN до дренажа to_lwip, tcp_bind/rexmit_fast/active_pcbs_changed + нагрузочный burst-тест 2026-09-25 23:36:45 +03:00
evgeny a20d73d2be proxy/tun: добавить DEBUG-логи диагностики застревания keep-alive (lwIP IN/OUT/RECVED/RTO/PERSIST + per-conn DIAG) 2026-09-25 22:12:47 +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 0381f4df89 Убраны TCP_TIMESTAMPS и TCP_KEEPALIVE из lwip_tcp_opts.h (не используются, конфликтовали с ws2ipdef.h на Windows) 2026-07-17 17:49:15 +03:00
Evgeny 1f4749a1b9 Убрал имена функций из DEBUG-сообщений (__FUNCTION__ уже добавляет) 
Оставлены метки-подсказки: NODEINFO, ACK_SEND, ETCP_SEND, DUMP,
router, conn_mgr, db_sync, probe, ctrl_out, socks_proxy и т.д.
 2026-07-09 19:23:49 +03:00
Evgeny 797c0736a7 headers: add extern "C" guards for C++ interop (chatgui) 
Added #ifdef __cplusplus / extern "C" { ... } / #endif to ~65 headers
in src/ and lib/, enabling the C library to be linked into C++ code (chatgui).
Fixed packet_dump.h (added missing header guard) and etcp_bbr.h
(#pragma once guard).
 2026-07-06 11:44:29 +03:00
jeka 7139969acd fix: Windows/MSYS2 build compatibility 
- proxy/icmp_proxy.c: define struct icmp/ip + ICMP constants for _WIN32
- lwip_tcp_priv.h: use #include <winsock2.h> instead of #define htonl/htons
- lwip_tcp.h/c: rename poll field to pollfn (avoid WSAPoll macro conflict)
- tests: guard Unix-only headers with #ifndef _WIN32, skip fork/socketpair tests
 2026-07-05 20:57:44 +03:00
Evgeny 075c4f4583 memory_pool: name field — идентификация пула в диагностике коррапшна 2026-06-09 22:20:25 +03:00
Evgeny e55c4ec7ce bugfixes 2026-06-09 13:18:42 +03:00
Evgeny 3217f744f9 memory_pool_is_freed + стратегические проверки на висячие указатели 
memory_pool: memory_pool_is_freed(pool,obj) — поиск obj в free-списке

tw_pcbs (3 места): !ctx→halt и is_freed→halt в начале итерации
  — ловит висячий PCB до re-alloc и после re-alloc

etcp: is_freed→halt перед etcp_conn_input (caller + callee)
  — ловит pkt освобождённый до входа

tcp_alloc: убран старый скан tw_pcbs (заменён на is_freed)
все dangling проверки — halt (while(1)) вместо break/return
 2026-06-05 20:45:42 +03:00
Evgeny 24a5de9398 memory_pool: канарейка (0xAA) + счётчик double-free; lwip_tcp: убраны TCP_TW_MAX/tw_iter, добавлен хук в tcp_alloc 
memory_pool: +2 байта за объектом — canary 0xAA для детекции buffer overflow,
counter для детекции double-free. При free проверяется canary и counter==0,
при alloc выставляется новый counter.

lwip_tcp: убраны TCP_TW_MAX и счётчики tw_iter (толку нет, краш на 2й итерации).
Оставлены: !pcb->ctx (dangling pointer), self-loop checks, next_owner диагностика.
Добавлена проверка в tcp_alloc: если новый PCB найден в tw_pcbs → halt.
 2026-06-05 20:01:28 +03:00
Evgeny a09c647dfd lwip_tcp: детект и защита от self-loop (pcb->next==pcb) в tw_pcbs 
tcp_slowtmr: после tcp_free проверка pcb==pcb2 → ctx->tw_pcbs=NULL, break
tcp_kill_timewait: проверка inactive->next==inactive → ctx->tw_pcbs=NULL, tcp_free
lwip_tcp_input: проверка pcb->next==pcb перед tcp_timewait_input → tcp_abort
все 3 лога выводят next_owner для диагностики источника self-ссылки
 2026-06-05 18:15:43 +03:00
Evgeny 11002bcb57 lwip_tcp: защита от зацикливания tw_pcbs + next_owner диагностика + таймауты + фикс RTO 
- TCP_TW_MAX=256: циклозащита в for/while циклах tw_pcbs (input, slowtmr, kill_timewait)
  + TCP_RMV макрос тоже защищён от бесконечного поиска
- next_owner в struct tcp_pcb/tcp_pcb_listen: отслеживает кто правил pcb->next
  (REG=1, RMV=2, SLOWTMR=3, INPUT=4). memset при alloc обнуляет
- таймауты: FIN_WAIT 20s→6s, SYN_RCVD 20s→6s, MSL 60s→25s (TIME_WAIT=50s)
- tcp_alloc: RTO из ctx->rto_min_ms вместо хардкода 3000
- handle_fin: pcb_state в лог
 2026-06-05 17:19:50 +03:00
Evgeny 58e45e9232 proxy: implement CLOSE and FIN relay protocol 
- CLOSE: admin connection teardown (drain queues, shutdown, free)
  Server: handle_close — pause read, drain rq (discard), drain wq to socket, shutdown, free
  Client: handle_close — drain to_lwip/tx_buf (discard), tcp_close pcb, free
  ERROR calls handle_close on both sides
- FIN: transparent relay event through ETCP (TCP_PROXY_SUBCMD_FIN=0x06)
  Server: on_fin_cb relays FIN_MSG to client, on_flushed_cb relays FIN_MSG
  Server: handle_fin relays FIN to remote socket via shutdown(SHUT_WR)
  Client: recv_cb relays FIN_MSG to exit, tx_waiter_cb relays FIN_MSG
  Client: handle_fin relays FIN to local TCP via tcp_shutdown(pcb,0,1)
- new tcp_conn_pause_read() in tcp_io (EPOLLIN off + cancel waiter)
- poll_cb simplified: remove tun_closed&&rem_closed wait block
- conn_free drains close_pending before free on both sides
- handle_data WARN→INFO for drops after close
- tcp_shutdown declared in lwip_tcp.h
 2026-06-04 16:02:32 +03:00
Evgeny 8d0c40195b tcp proxy/lwip: move per-packet traffic logs from INFO/ERROR to TRACE 2026-06-04 12:13:50 +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 7c668b5d6c add lwIP state diagnostics: tcp_alloc cwnd/sndbuf, proxy_poll_cb cwnd/unsent/unacked, active_pcbs counter 2026-05-30 22:40:31 +03:00
Evgeny 2144eea46f fix compiler warnings: C23 label+declaration, uint16_t overflow check 2026-05-30 02:12:47 +03:00
Evgeny 7c71ef683c add lwIP TCP stack test with fixes: rcv_wnd tracking, FIN compensation, tmr_phase dual-counter, trace ring buffer, stats counters 2026-05-30 01:39:34 +03:00
Evgeny f1bd65f450 fix lwIP TCP checksums on LE: remove htons from pseudo-header sum, add htons to return values 2026-05-13 02:11:59 +03:00
Evgeny f85f2f20fb fix tcp_pseudo_checksum: add ntohs() to correctly extract 16-bit IP halfwords from NBO on LE 2026-05-13 01:55:14 +03:00
Evgeny d00996243d fix lwip_tcp_priv.h: use #ifndef _WIN32 for arpa/inet.h (FreeBSD compat) 2026-05-12 22:00:41 +03:00
Evgeny ad8bc0ae00 fix lwip_tcp port byte order (double-htons), mapping lookup, socket error handling 
- Fix port encoding: PCB stores ports in host byte order, tcp_create_segment uses htons
- Fix tcp_bind/tcp_connect: ntohs incoming network-order ports
- Fix demux comparisons: use host-order sport/dport statics instead of in-place ntohs
- Fix tcp_output_alloc_header_common: htons for port output
- Add static sport/dport variables (host byte order) to avoid tcphdr corruption
- Fix sock_transport_error_callback: handle EPOLLERR during non-blocking connect
- Fix mapping local_port: store host-order port for find_mapping_by_port
- Fix tcp_proxy_raw_read/tun_input: use IP total length for packet boundaries
- test_tcp_proxy: reduce size to 2KB, fix port, add debug_init, add echo server log
- test_tcp_proxy handshake and basic data flow now working (known: cwnd/poll throughput tuning needed)
 2026-05-12 12:16:09 +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