[nginx] Upstream: fixed logging level of upstream invalid header errors.

[Maxim Dounin]

details:   https://hg.nginx.org/nginx/rev/2f443cac3f1e
branches:  
changeset: 7933:2f443cac3f1e
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Mon Oct 18 16:46:59 2021 +0300
description:
Upstream: fixed logging level of upstream invalid header errors.

In b87b7092cedb (nginx 1.21.1), logging level of "upstream sent invalid
header" errors was accidentally changed to "info".  This change restores
the "error" level, which is a proper logging level for upstream-side
errors.

diffstat:

 src/http/modules/ngx_http_fastcgi_module.c |  2 +-
 src/http/modules/ngx_http_proxy_module.c   |  2 +-
 src/http/modules/ngx_http_scgi_module.c    |  2 +-
 src/http/modules/ngx_http_uwsgi_module.c   |  2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diffs (48 lines):

diff -r 01829d162095 -r 2f443cac3f1e src/http/modules/ngx_http_fastcgi_module.c
--- a/src/http/modules/ngx_http_fastcgi_module.c	Tue Oct 12 23:18:18 2021 +0300
+++ b/src/http/modules/ngx_http_fastcgi_module.c	Mon Oct 18 16:46:59 2021 +0300
@@ -2021,7 +2021,7 @@ ngx_http_fastcgi_process_header(ngx_http
 
             /* rc == NGX_HTTP_PARSE_INVALID_HEADER */
 
-            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+            ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
                           "upstream sent invalid header: \"%*s\\x%02xd...\"",
                           r->header_end - r->header_name_start,
                           r->header_name_start, *r->header_end);
diff -r 01829d162095 -r 2f443cac3f1e src/http/modules/ngx_http_proxy_module.c
--- a/src/http/modules/ngx_http_proxy_module.c	Tue Oct 12 23:18:18 2021 +0300
+++ b/src/http/modules/ngx_http_proxy_module.c	Mon Oct 18 16:46:59 2021 +0300
@@ -2021,7 +2021,7 @@ ngx_http_proxy_process_header(ngx_http_r
 
         /* rc == NGX_HTTP_PARSE_INVALID_HEADER */
 
-        ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+        ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
                       "upstream sent invalid header: \"%*s\\x%02xd...\"",
                       r->header_end - r->header_name_start,
                       r->header_name_start, *r->header_end);
diff -r 01829d162095 -r 2f443cac3f1e src/http/modules/ngx_http_scgi_module.c
--- a/src/http/modules/ngx_http_scgi_module.c	Tue Oct 12 23:18:18 2021 +0300
+++ b/src/http/modules/ngx_http_scgi_module.c	Mon Oct 18 16:46:59 2021 +0300
@@ -1142,7 +1142,7 @@ ngx_http_scgi_process_header(ngx_http_re
 
         /* rc == NGX_HTTP_PARSE_INVALID_HEADER */
 
-        ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+        ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
                       "upstream sent invalid header: \"%*s\\x%02xd...\"",
                       r->header_end - r->header_name_start,
                       r->header_name_start, *r->header_end);
diff -r 01829d162095 -r 2f443cac3f1e src/http/modules/ngx_http_uwsgi_module.c
--- a/src/http/modules/ngx_http_uwsgi_module.c	Tue Oct 12 23:18:18 2021 +0300
+++ b/src/http/modules/ngx_http_uwsgi_module.c	Mon Oct 18 16:46:59 2021 +0300
@@ -1363,7 +1363,7 @@ ngx_http_uwsgi_process_header(ngx_http_r
 
         /* rc == NGX_HTTP_PARSE_INVALID_HEADER */
 
-        ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+        ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
                       "upstream sent invalid header: \"%*s\\x%02xd...\"",
                       r->header_end - r->header_name_start,
                       r->header_name_start, *r->header_end);