SSL: disabled sending shutdown after ngx_http_test_reading().
Sending shutdown when ngx_http_test_reading() detects the connection is
closed can result in "SSL_shutdown() failed (SSL: ... bad write retry)"
critical log messages if there are blocked writes.
Fix is to avoid sending shutdown via the c->ssl->no_send_shutdown flag,
similarly to how it is done in ngx_http_keepalive_handler() for kqueue
when pending EOF is detected.
Reported by Jan Prachař
(http://mailman.nginx.org/pipermail/nginx-devel/2018-December/011702.html).
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 257c406..f80785d 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -2992,6 +2992,12 @@
rev->error = 1;
}
+#if (NGX_HTTP_SSL)
+ if (c->ssl) {
+ c->ssl->no_send_shutdown = 1;
+ }
+#endif
+
ngx_log_error(NGX_LOG_INFO, c->log, err,
"client prematurely closed connection");
