SSL: logging level of "application data after close notify".

Such fatal errors are reported by OpenSSL 1.1.1, and similarly by BoringSSL,
if application data is encountered during SSL shutdown, which started to be
observed on the second SSL_shutdown() call after SSL shutdown fixes made in
09fb2135a589 (1.19.2).  The error means that the client continues to send
application data after receiving the "close_notify" alert (ticket #2318).
Previously it was reported as SSL_shutdown() error of SSL_ERROR_SYSCALL.

diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 1e6fc961483bf31cc2008dae35f594f5dcb8fa27..975f959ac482633161f8849bc1e2ede608ed4ec8 100644 (file)
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -3385,6 +3385,12 @@ ngx_ssl_connection_error(ngx_connection_t *c, int sslerr, ngx_err_t err,
 #endif
             || n == SSL_R_WRONG_VERSION_NUMBER                       /*  267 */
             || n == SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC        /*  281 */
+#ifdef SSL_R_APPLICATION_DATA_AFTER_CLOSE_NOTIFY
+            || n == SSL_R_APPLICATION_DATA_AFTER_CLOSE_NOTIFY        /*  291 */
+#endif
+#ifdef SSL_R_APPLICATION_DATA_ON_SHUTDOWN
+            || n == SSL_R_APPLICATION_DATA_ON_SHUTDOWN               /*  291 */
+#endif
 #ifdef SSL_R_RENEGOTIATE_EXT_TOO_LONG
             || n == SSL_R_RENEGOTIATE_EXT_TOO_LONG                   /*  335 */
             || n == SSL_R_RENEGOTIATION_ENCODING_ERR                 /*  336 */