From 6cfbf4ba791000705efeed4d29a212f6bd86821c Mon Sep 17 00:00:00 2001
From: Igor Sysoev <igor@sysoev.ru>
Date: Fri, 18 Sep 2020 13:20:05 +0300
Subject: [PATCH] Fixed segmentation fault during reconfiguration.

---
 src/nxt_h1proto.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/nxt_h1proto.c b/src/nxt_h1proto.c
index f340ea1e..94b74929 100644
--- a/src/nxt_h1proto.c
+++ b/src/nxt_h1proto.c
@@ -1749,7 +1749,15 @@ nxt_h1p_conn_timer_value(nxt_conn_t *c, uintptr_t data)
 
     joint = c->listen->socket.data;
 
-    return nxt_value_at(nxt_msec_t, joint->socket_conf, data);
+    if (nxt_fast_path(joint != NULL)) {
+        return nxt_value_at(nxt_msec_t, joint->socket_conf, data);
+    }
+
+    /*
+     * Listening socket had been closed while
+     * connection was in keep-alive state.
+     */
+    return 1;
 }