From 5a4aaa6aed4d4b97d09548035298a90bf984a997 Mon Sep 17 00:00:00 2001
From: Roman Arutyunyan <arut@nginx.com>
Date: Thu, 20 Aug 2020 12:33:00 +0300
Subject: [PATCH] HTTP/3: special handling of client errors in the upstream
 module.

The function ngx_http_upstream_check_broken_connection() terminates the HTTP/1
request if client sends eof.  For QUIC (including HTTP/3) the c->write->error
flag is now checked instead.  This flag is set when the entire QUIC connection
is closed or STOP_SENDING was received from client.
---
 src/http/ngx_http_upstream.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 47f98ccb2..88e7b6fad 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -1345,6 +1345,19 @@ ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
     }
 #endif
 
+#if (NGX_HTTP_QUIC)
+
+    if (c->qs) {
+        if (c->write->error) {
+            ngx_http_upstream_finalize_request(r, u,
+                                               NGX_HTTP_CLIENT_CLOSED_REQUEST);
+        }
+
+        return;
+    }
+
+#endif
+
 #if (NGX_HAVE_KQUEUE)
 
     if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {