SSL_CTX_SET_READ_AHEAD(3ssl) OpenSSL SSL_CTX_SET_READ_AHEAD(3ssl) SSL_CTX_set_read_ahead, SSL_CTX_get_read_ahead, SSL_set_read_ahead, SSL_get_read_ahead, SSL_CTX_get_default_read_ahead - #include void SSL_set_read_ahead(SSL *s, int yes); int SSL_get_read_ahead(const SSL *s); SSL_CTX_set_read_ahead(SSL_CTX *ctx, int yes); long SSL_CTX_get_read_ahead(SSL_CTX *ctx); long SSL_CTX_get_default_read_ahead(SSL_CTX *ctx); SSL_CTX_set_read_ahead() SSL_set_read_ahead() ( ) . OpenSSL x y BIO ( y > x) OpenSSL y ( ) x . yes 0 . SSL_CTX_set_default_read_ahead() SSL_CTX_set_read_ahead(). SSL_CTX_get_read_ahead() SSL_get_read_ahead() . SSL_CTX_get_default_read_ahead() SSL_CTX_get_read_ahead(). QUIC SSL. SSL_set_read_ahead() QUIC SSL. DTLS. SSL_CTX_get_read_head() SSL_get_read_ahead() DTLS. read_ahead SSL_pending() ( SSL_pending(3)). SSL_read() SSL_ERROR_WANT_READ SSL_has_pending() SSL_MODE_AUTO_RETRY SSL_CTX_clear_mode() . SSL_ERROR_WANT_READ . ( TCP) SSL SSL_shutdown() . SSL . SSL_get_read_ahead() SSL_CTX_get_read_ahead() 0 . ssl(7), SSL_pending(3) 2015-2023 OpenSSL. . Apache 2.0 ( ""). . LICENSE . 3 . . : . 3.6.2 7 2026 SSL_CTX_SET_READ_AHEAD(3ssl)