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-rw-r--r--src/http/ngx_http_upstream.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
index 7a47675eb..f3e9f7979 100644
--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -43,6 +43,7 @@
|NGX_HTTP_UPSTREAM_FT_HTTP_429)
#define NGX_HTTP_UPSTREAM_INVALID_HEADER 40
+#define NGX_HTTP_UPSTREAM_EARLY_HINTS 41
#define NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT 0x00000002