[nginx] HTTP/2: added logging of 400 (Bad Request) reasons.

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/d77407baccd1
branches:  
changeset: 7106:d77407baccd1
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Thu Sep 14 19:06:03 2017 +0300
description:
HTTP/2: added logging of 400 (Bad Request) reasons.

diffstat:

 src/http/v2/ngx_http_v2.c |  13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diffs (23 lines):

diff --git a/src/http/v2/ngx_http_v2.c b/src/http/v2/ngx_http_v2.c
--- a/src/http/v2/ngx_http_v2.c
+++ b/src/http/v2/ngx_http_v2.c
@@ -3337,6 +3337,19 @@ ngx_http_v2_construct_request_line(ngx_h
         || r->schema_start == NULL
         || r->unparsed_uri.len == 0)
     {
+        if (r->method_name.len == 0) {
+            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                          "client sent no :method header");
+
+        } else if (r->schema_start == NULL) {
+            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                          "client sent no :schema header");
+
+        } else {
+            ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+                          "client sent no :path header");
+        }
+
         ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
         return NGX_ERROR;
     }