From: Sergey Kandaurov <pluknet@nginx.com>
Date: Thu, 2 Apr 2026 13:41:56 +0000 (+0400)
Subject: Upstream: fixed processing multiple 103 (early hints) responses.
X-Git-Tag: release-1.29.8~6
X-Git-Url: http://www.kaiwu.me/postgresql/commit/static/gitweb.js?a=commitdiff_plain;h=7924a4ec6cb35291ea60a5f2a70ac0a034d94ff7;p=nginx.git

Upstream: fixed processing multiple 103 (early hints) responses.

The second 103 response in a row was treated as the final response header.
---

diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index f177f0a28..c84defaa9 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -2550,6 +2550,8 @@ ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
 
         u->response_received = 1;
 
+again:
+
         rc = u->process_header(r);
 
         if (rc == NGX_AGAIN) {
@@ -2570,11 +2572,7 @@ ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
             rc = ngx_http_upstream_process_early_hints(r, u);
 
             if (rc == NGX_OK) {
-                rc = u->process_header(r);
-
-                if (rc == NGX_AGAIN) {
-                    continue;
-                }
+                goto again;
             }
         }