- 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
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)
- 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
- 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
- route_ping.c: burst mode - send next ping immediately on response
- route_ping.h: add target_ipv4/target_port/pubkey to BGP_PING_REQUEST
- test_nat_detection.c: add test for ping without embedded pubkey
- test_etcp_simple_traffic.c: use dynamic ports + fix timebase units
- Makefile.am: show test execution time in ms
- build.sh: added --full flag for full rebuild (autoreconf + configure + make)
- build_direct.sh: incremental compilation (skips unchanged files)
- build_full.bat: new Windows batch for full rebuild
- configure.ac: fixed Windows detection using AC_COMPILE_IFELSE
- lib/u_async.c/h: Windows wakeup socket support, uasync_post for thread-safe callbacks
- src/tun_if.c/h: cross-platform TUN refactoring, Windows read thread support
- src/tun_windows.c: Windows TUN implementation improvements
- src/control_server.c: removed premature return statement
- src/routing.c: include ordering fix
- src/utun.c: windows compat includes
- Deleted obsolete net_emulator/Makefile and tinycrypt/Makefile
- Implement control_server.c/h for monitoring and management
- Add Windows-compatible uasync_poll using select() instead of WSAPoll
- Fix Wintun adapter creation to open existing adapters first
- Add debug category for control server operations
- Update build files to include control server in compilation
- Add test_control_server to test suite
- Переименовано поле allowed_subnets -> route_subnets в конфигурации
- Обновлен парсинг конфига: allowed_subnet -> route_subnet
- Создан новый модуль tun_route для управления системными маршрутами
- Linux: реализация через netlink sockets с fallback на ip route
- Windows: реализация через IP Helper API
- BSD: реализация через routing sockets с fallback на route
- При запуске: автоматическое добавление маршрутов route_subnet на TUN интерфейс
- При завершении: автоматическое удаление всех маршрутов через tun_route_flush
- Обновлены Makefile.am для сборки новых файлов
- Добавлена опция tun_test_mode в конфиг для работы без реального TUN устройства
- Добавлены функции для работы с очередями TUN в тестовом режиме
- Добавлен API для программного создания instance из структуры конфига
- Создан тест test_routing_mesh.c с 3-instance mesh топологией
- Ключи генерируются автоматически и распределяются между instance
- Remove sys/socket.h include from test_etcp_two_instances.c (Linux-only)
- Fix test_mkdtemp buffer overflow - use memcpy instead of strncpy
- Fix test_mkdtemp return value check (replace == NULL with != 0)
- Add Windows socket libraries (-lws2_32 -liphlpapi) to test builds
- All tests build successfully on Linux
- Split TUN implementation into platform-specific files:
- tun_if.c: Common code (queues, callbacks, statistics)
- tun_linux.c: Linux TUN/TAP implementation (/dev/net/tun + ioctl)
- tun_windows.c: Windows Wintun implementation (wintun.dll + IP Helper)
- Update tun_if.h with platform abstraction layer:
- tun_platform_init/cleanup/read/write/get_poll_fd
- Platform handles: fd (Linux), WINTUN handles (Windows)
- Windows implementation features:
- Dynamic loading of wintun.dll with graceful error handling
- IP Helper API for IP address and MTU configuration
- HANDLE-based uasync integration
- Clear error message if wintun.dll is not found
- Update build system:
- configure.ac: Detect Windows (mingw/msys/cygwin)
- src/Makefile.am: Conditional compilation of tun_linux/tun_windows
- tests/Makefile.am: Link platform-specific TUN objects
- Add wintun.dll and wintun.h to lib/ directory
- All 22 tests pass on Linux
- Ready for MSYS2 UCRT64 Windows build
- Add route_bgp.c/h with BGP-like route exchange functionality
- Implement route_bgp_init/destroy for module lifecycle
- Add route_bgp_new_conn to send routing table on connection
- Implement route_bgp_receive_cbk for processing incoming routes
- Add route_table_delete_entry for individual route removal
- Extend ROUTE_ENTRY with endpoint_ip, endpoint_port, destination_node_id
- Add DEBUG_CATEGORY_BGP to debug_config.h
- Integrate BGP initialization into utun_instance_create
- Call route_bgp_new_conn from etcp_connections on link init
- Create integration test test_bgp_route_exchange.c
- Add route_bgp_delete_entry tests to test_route_lib.c
- Update Makefiles to include new module
Route exchange tested and working in both directions (client-server)
Based on test_pkt_normalizer_etcp.c but uses high-level API:
- etcp_send() for sending packets via ETCP normalizer
- etcp_bind() for registering receive callbacks
- etcp_api_init()/etcp_api_deinit() for API lifecycle
NOTE: Test has current limitation - pkt_normalizer packer aggregates
packets into ~1536 byte chunks, exceeding ETCP max payload of 1480 bytes.
This causes encrypt_send to fail. The test demonstrates correct API usage
pattern but requires packer fix for full functionality.
- Build in build/ directory instead of source tree
- Main binary (utun) copied to project root
- Tests run from build/tests/ with config files copied there
- Test output redirected to build/tests/logs/*.log files
- Console shows only [PASS]/[FAIL]/[SKIP] status
- Incremental build works correctly
- make check runs all tests with summary
Changes:
- New root Makefile as wrapper for out-of-tree build
- Updated Makefile.am files for lib, src, tests
- Added tinycrypt-objects target for test dependencies
- Tests no longer clutter project root
Implemented:
- etcp_send(conn, entry) - отправляет пакет в очередь normalizer
- etcp_bind(id, callback) - подписка на пакеты с определенным ID
- etcp_unbind(id) - отписка от пакетов
- etcp_recv(queue, arg) - коллбэк для маршрутизации пакетов по ID
- etcp_api_init/deinit - инициализация API
Integration:
- pn_init() теперь устанавливает etcp_recv как callback для pn->output
- Добавлены etcp_api.c/h в src/Makefile.am
- Добавлен etcp_api.o в тестовые зависимости
API использует первый байт кодограммы (cmd) как ID для маршрутизации.
ID=0 используется как default handler если нет специфичного binding.
- Changed object file references from 'name.o' to 'utun-name.o' to match automake naming
- Added explicit rules for building TinyCrypt objects
- Added tinycrypt-objects target for building crypto dependencies
- Fixed test_etcp_simple_traffic.c: replaced etcp_send with etcp_int_send
- Fixed test_etcp_100_packets.c: replaced etcp_send with etcp_int_send
Test Results: All 19 tests PASS
- Fixed race condition: routing_add_conn called before etcp->normalizer was assigned
- Moved routing_add_conn from pn_init to etcp_connection_create after normalizer init
- Added routing.h include to etcp.c
- Fixed tests: disable routing callback on output_queue to keep packets for test verification
All 19 tests now pass.
Evgeny
jeka