# HG changeset patch
# User Valentin Bartenev <vbart@nginx.com>
# Date 1445365718 -10800
# Node ID ee16fb0db905cfb858a929374cf623cdf1a0f9d3
# Parent  adaac65899c81506089a20646c291408385b58ee
HTTP/2: improved error handling while parsing integers.

The case when an integer is out of frame bounds should be checked first
as a more accurate error.

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
@@ -2417,14 +2417,14 @@ ngx_http_v2_parse_int(ngx_http_v2_connec
         }
     }
 
+    if ((size_t) (end - start) >= h2c->state.length) {
+        return NGX_ERROR;
+    }
+
     if (end == start + NGX_HTTP_V2_INT_OCTETS) {
         return NGX_DECLINED;
     }
 
-    if ((size_t) (end - start) >= h2c->state.length) {
-        return NGX_ERROR;
-    }
-
     return NGX_AGAIN;
 }