[nginx] HTTP/2: prevented creating temp files for requests without body.

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/169fef913184
branches:  stable-1.10
changeset: 6892:169fef913184
user:      Valentin Bartenev <vbart at nginx.com>
date:      Sat Dec 10 13:23:38 2016 +0300
description:
HTTP/2: prevented creating temp files for requests without body.

The problem was introduced by 52bd8cc17f34.

diffstat:

 src/http/v2/ngx_http_v2.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (16 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
@@ -3537,8 +3537,10 @@ ngx_http_v2_read_request_body(ngx_http_r
         rb->buf = ngx_create_temp_buf(r->pool, (size_t) len);
 
     } else {
-        /* enforce writing body to file */
-        r->request_body_in_file_only = 1;
+        if (stream->preread) {
+            /* enforce writing preread buffer to file */
+            r->request_body_in_file_only = 1;
+        }
 
         rb->buf = ngx_calloc_buf(r->pool);