1 files changed, 7 insertions, 5 deletions
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 9b6d461e0..285879f2f 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -3504,11 +3504,13 @@ ngx_http_set_lingering_close(ngx_http_request_t *r)
         }
     }
 
-    if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
-        ngx_connection_error(c, ngx_socket_errno,
-                             ngx_shutdown_socket_n " failed");
-        ngx_http_close_request(r, 0);
-        return;
+    if (c->fd != NGX_INVALID_FILE) {
+        if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
+            ngx_connection_error(c, ngx_socket_errno,
+                                 ngx_shutdown_socket_n " failed");
+            ngx_http_close_request(r, 0);
+            return;
+        }
     }
 
     if (rev->ready) {