BIO(7ssl) OpenSSL BIO(7ssl) bio - / #include BIO / / . BIO / SSL / . BIO: BIO / BIO . BIO / / BIO BIO . BIO BIO . ( BIO ) ( BIO ). BIO / : BIO . BIOs (BIO ). BIO / BIOs . BIO ( BIO /). BIOs ( BIOs ) BIO_new(). ( BIOs ) BIOs. BIO_free() BIO BIO . BIO_free_all() BIO BIO_free() . type BIO_METHOD. : BIO / BIO_s_ BIO BIO_f_. TCP TCP (RFC7413) "TFO" BIO OpenSSL 3.2. TFO : o 3.13 TFO . o 4.11 TCP_FASTOPEN_CONNECT. o FreeBSD 10.3 11.4 TFO . o FreeBSD 12.0 TFO . o macOS 10.14 . API TFO. API . BIO: BIO *mem = BIO_new(BIO_s_mem()); BIO_ctrl(3), BIO_f_base64(3), BIO_f_buffer(3), BIO_f_cipher(3), BIO_f_md(3), BIO_f_null(3), BIO_f_ssl(3), BIO_f_readbuffer(3), BIO_find_type(3), BIO_get_conn_mode(3), BIO_new(3), BIO_new_bio_pair(3), BIO_push(3), BIO_read_ex(3), BIO_s_accept(3), BIO_s_bio(3), BIO_s_connect(3), BIO_s_fd(3), BIO_s_file(3), BIO_s_mem(3), BIO_s_null(3), BIO_s_socket(3), BIO_set_callback(3), BIO_set_conn_mode(3), BIO_set_tfo(3), BIO_set_tfo_accept(3), BIO_should_retry(3) 2000-2022 OpenSSL. . Apache 2.0 ( ""). . LICENSE . 3 . . : . 3.6.2 7 2026 BIO(7ssl)