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.
ss-redir's TCP side moves onto the relay engine (per-listener TOS for the
DSCP ports). src/relay/udp replaces udprelay.cpp: sessions keyed by
client address own their upstream socket and live in a fixed LRU,
AEAD-2022 server sessions are shared through RefPtr between the
session-ID table and the relays using them, and datagrams waiting for
DNS sit in pool slots. Packets are received into and built in
relay-owned buffers instead of a 64 KiB allocation per datagram. The
programs no longer call crypto_init(); Method sets up libsodium and the
replay filter.
The SOCKS5 handshake, the ACL bypass decision (with its own resolver for
host-name rules) and the short wait for a first payload are now engine
code; local.cpp keeps only option parsing and startup. The library entry
points start the same engine.
Rename utils, ss_event, udprelay, winsock, local, server, tunnel, redir
and manager from .c to .cpp. Inside the moved files only the
\snippet{doc} file references and header comments change; snippet
references in doc/*.md, tests/test_cli_docs.py, the build files and
CONTRIBUTION.md follow the new names.
Also cast the Windows-only string literal returned by
get_default_conf(), found by the zig x86_64-windows-gnu build.
Every module of src/ except the unbuilt android.c and the vendored
blake3 is now compiled as C++20. The new .cpp files join the no-heap
ratchet baseline.
Max Lv