commit 82bc4bfda1c6dcd382e9fd8e121cdbd0773ec76d
author Maxim Dounin <mdounin@mdounin.ru> Thu Feb 15 19:06:22 2018 +0300
committer Maxim Dounin <mdounin@mdounin.ru> Thu Feb 15 19:06:22 2018 +0300
tree ec5a81cca2e2f6b9687d8b15a774b13fae77724e
parent 3ee1db6e2080e30c1098e480698cd697b16ddd42

HTTP/2: precalculate hash for "Cookie".

There is no need to calculate hashes of static strings at runtime.  The
ngx_hash() macro can be used to do it during compilation instead, similarly
to how it is done in ngx_http_proxy_module.c for "Server" and "Date" headers.

src/http/v2/ngx_http_v2.c

diff --git a/src/http/v2/ngx_http_v2.c b/src/http/v2/ngx_http_v2.c
index 44d0110..7bea204 100644
--- a/src/http/v2/ngx_http_v2.c
+++ b/src/http/v2/ngx_http_v2.c
@@ -3698,7 +3698,8 @@
         return NGX_ERROR;
     }
 
-    h->hash = ngx_hash_key(cookie.data, cookie.len);
+    h->hash = ngx_hash(ngx_hash(ngx_hash(ngx_hash(
+                                    ngx_hash('c', 'o'), 'o'), 'k'), 'i'), 'e');
 
     h->key.len = cookie.len;
     h->key.data = cookie.data;