From: David Carlier <devnexen@gmail.com>
Date: Fri, 20 Feb 2026 05:08:09 +0000 (+0000)
Subject: gRPC: reset buffer chains on upstream reinit.
X-Git-Tag: release-1.29.7~13
X-Git-Url: http://www.kaiwu.me/postgresql/commit/static/gitweb.js?a=commitdiff_plain;h=a29476464cc86092135401bdcad91e4d38ac6b6d;p=nginx.git

gRPC: reset buffer chains on upstream reinit.

Previously, ctx->out was not cleared in ngx_http_grpc_reinit_request(),
which could cause queued HTTP/2 control frames (SETTINGS ACK, PING ACK,
WINDOW_UPDATE) to be sent on next upstream.

Additionally, ctx->in and ctx->busy needs to be cleared to avoid similar
problems with buffered request body fixed in cd12dc4f1.
---

diff --git a/src/http/modules/ngx_http_grpc_module.c b/src/http/modules/ngx_http_grpc_module.c
index 4c95525b4..cc3aebe59 100644
--- a/src/http/modules/ngx_http_grpc_module.c
+++ b/src/http/modules/ngx_http_grpc_module.c
@@ -1224,6 +1224,9 @@ ngx_http_grpc_reinit_request(ngx_http_request_t *r)
     ctx->rst = 0;
     ctx->goaway = 0;
     ctx->connection = NULL;
+    ctx->in = NULL;
+    ctx->busy = NULL;
+    ctx->out = NULL;
 
     return NGX_OK;
 }