73f707ef9b
crypto: migrate ECDH(secp256r1) to X25519, drop TinyCrypt
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- 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
1f4fe37fe5
proxy: rename + simplify + backpressure
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- 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
13d469d866
add orig_src_ip to ICMP proxy protocol, fix deliver_reply dst_ip (was wrong tun_ip_addr)
5 months ago
edeb83ce89
replace fake ICMP echo reply with test_loopback flag, honest error when no raw socket
5 months ago
a6311a17d0
add UDP/ICMP proxy, refactor tcp_proxy via_node to instance-level
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- 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