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Jesse Hills
bfb8569636
Linking an HTTPS client (http_request, mqtt) pulls in TLS features no ESPHome client ever negotiates: the server-side handshake, static RSA and static ECDH key exchange, renegotiation, session tickets, AES-CCM suites, the EC private-key parsing extras and deterministic ECDSA. Two new esp32 advanced options, on by default, turn them off and save around 14 KB per build; OpenThread opts back in through require hooks because its DTLS commissioner is a server and it uses CCM and deterministic ECDSA directly. On the ESP32-C6 the ROM exports a full-format vsnprintf but no vasprintf, so esp_http_client's vasprintf call was the only thing dragging newlib's printf engine (~20 KB) into the image. A linker-wrapped vasprintf built on the ROM vsnprintf keeps it out.
