Cache: increased cache header Vary and ETag lengths to 128.
This allows to store larger ETag values for proxy_cache_revalidate,
including ones generated as SHA256, and cache responses with longer
Vary (ticket #826).
In particular, this fixes caching of Amazon S3 responses with CORS
enabled, which now use "Vary: Origin, Access-Control-Request-Headers,
Access-Control-Request-Method".
Cache version bumped accordingly.
diff --git a/src/http/ngx_http_cache.h b/src/http/ngx_http_cache.h
index 5b135e2..f9e9664 100644
--- a/src/http/ngx_http_cache.h
+++ b/src/http/ngx_http_cache.h
@@ -24,10 +24,10 @@
#define NGX_HTTP_CACHE_SCARCE 8
#define NGX_HTTP_CACHE_KEY_LEN 16
-#define NGX_HTTP_CACHE_ETAG_LEN 42
-#define NGX_HTTP_CACHE_VARY_LEN 42
+#define NGX_HTTP_CACHE_ETAG_LEN 128
+#define NGX_HTTP_CACHE_VARY_LEN 128
-#define NGX_HTTP_CACHE_VERSION 4
+#define NGX_HTTP_CACHE_VERSION 5
typedef struct {
