SSL_ALERT_TYPE_STRING(3ssl) OpenSSL SSL_ALERT_TYPE_STRING(3ssl) SSL_alert_type_string, SSL_alert_type_string_long, SSL_alert_desc_string, SSL_alert_desc_string_long - #include const char *SSL_alert_type_string(int value); const char *SSL_alert_type_string_long(int value); const char *SSL_alert_desc_string(int value); const char *SSL_alert_desc_string_long(int value); SSL_alert_type_string() value. SSL_alert_type_string_long() value. SSL_alert_desc_string() value. SSL_alert_desc_string_long() value. SSL/TLS . ( ). . "close notify" . (" " " ") . ( .) . TLS RFC. . SSL_alert_type_string() SSL_alert_type_string_long(): "W"/"warning" "F"/"fatal" "U"/"unknown" . value . SSL_alert_desc_string() SSL_alert_desc_string_long(): "CN"/"close notify" . . "UM"/"unexpected message" . . "BM"/"MAC " MAC . . "DF"/" " ( ). . "HF"/" " . . "NC"/" " (SSLv3 ). "BC"/" " . "UC"/" " . "CR"/" " . "CE"/" " . "CU"/" " ( ) . "IP"/" " . . "DC"/" " TLS : . . "RO"/" " TLS 2^14+2048 TLS 2^14+1024 . . "CA"/" " (CA) . . "AD"/" " . . "DE"/" " . . "CY"/" " . "ER"/" " RSA 1024 RSA_EXPORT. . "PV"/" " . ( ). . "IS"/" " handshake_failure . . "IE"/" " ( ). . "US"/" " . close_notify . close_notify. . "NR"/" " hello client hello . . ( ) . . "UP"/" PSK " PSK SRP. "UK"/" " . value . ssl(7) SSL_CTX_set_info_callback(3) 2001-2016 OpenSSL. . Apache 2.0 ( ""). . LICENSE . 3 . . : . 3.6.2 7 2026 SSL_ALERT_TYPE_STRING(3ssl)