The programs point libuv, c-ares and Mbed TLS (MBEDTLS_PLATFORM_MEMORY in
the bundled build) at their own FixedHeap before anything runs, mark the
end of startup with heap_seal(), and in verbose mode report heap use and
any allocation after it at exit. The library build keeps the host's
allocator.
measure_alloc.py gains --udp, and the alloc_steady_programs_* tests now
fail on any malloc per relayed TCP connection (by name and by address)
or UDP association, for every cipher family.
src/crypto/aead.hpp implements the SIP004/SIP007 AEAD ciphers as value
types: AeadEngine holds the libsodium or Mbed TLS GCM state by value,
AeadTcpEncryptor/AeadTcpDecryptor frame the chunk stream with a fixed
reassembly buffer, and aead_udp_seal/open handle packets. HKDF-SHA1 runs
on stack SHA-1 state instead of Mbed TLS's allocating HMAC API.
The bundled Mbed TLS config now enables MBEDTLS_BLOCK_CIPHER_C, which
keeps the AES context inside mbedtls_gcm_context, so GCM key setup no
longer allocates. That alone saves the C programs two allocations per
connection.
test_crypto_aead_cpp checks HKDF against RFC 5869 and crypto_hkdf, runs
TCP streams and UDP packets between the C and C++ implementations in
both directions for all five AEAD methods, and covers tampering,
framing and salt replay. alloc_steady_crypto_aead runs it under the
malloc counter and requires zero allocations across 600 new
connections and 600 packets (tests/alloc_audit/check_steady.py).
ss_strict_warnings() now applies -Wextra per source file so targets
mixing new C++ with converted C modules keep the latter at -Wall, and
Result gains move assignment.
Bundle pinned offline dependencies, remove libcork/libipset and submodule requirements, and add portable runtime helpers with relocatable static/shared library installations.
Add Clang static build validation for Linux/musl, macOS and Windows, real TCP/UDP and SIP003 interoperability coverage, and recorded performance tradeoffs. All 21 hosted checks pass at the reviewed PR head 8d504e6218.
Max Lv