low SSL handshake close notify alert error level
diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index d4b565c..8ba3e8e 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -1158,6 +1158,7 @@
if (n == SSL_R_NO_SHARED_CIPHER
|| n == SSL_R_UNEXPECTED_MESSAGE
|| n == SSL_R_WRONG_VERSION_NUMBER
+ || n == 1000 /* SSL_R_SSLV3_ALERT_CLOSE_NOTIFY */
|| n == SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED
|| n == SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER
|| n == SSL_R_TLSV1_ALERT_UNKNOWN_CA)