Fix: add missing child_exit hook per architecture.yml

- Add reqin_log_child_exit() to close Unix socket on child exit
- Register hook with ap_hook_child_exit()
- Ensures clean socket cleanup as specified in architecture.yml

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

src/mod_reqin_log.c

@@ -591,24 +591,36 @@ static int reqin_log_post_read_request(request_rec *r)
 static void reqin_log_child_init(apr_pool_t *p, server_rec *s)
 {
     (void)p;
-    
+
     reqin_log_config_t *cfg = get_module_config(s);
-    
+
     g_child_state.socket_fd = -1;
     g_child_state.last_connect_attempt = 0;
     g_child_state.last_error_report = 0;
     g_child_state.connect_failed = 0;
-    
+
     if (cfg == NULL || !cfg->enabled || cfg->socket_path == NULL) {
         return;
     }
-    
+
     try_connect(cfg, s);
 }
 
+static void reqin_log_child_exit(apr_pool_t *p, server_rec *s)
+{
+    (void)p;
+    (void)s;
+
+    if (g_child_state.socket_fd >= 0) {
+        close(g_child_state.socket_fd);
+        g_child_state.socket_fd = -1;
+    }
+}
+
 static void reqin_log_register_hooks(apr_pool_t *p)
 {
     (void)p;
     ap_hook_post_read_request(reqin_log_post_read_request, NULL, NULL, APR_HOOK_MIDDLE);
     ap_hook_child_init(reqin_log_child_init, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_child_exit(reqin_log_child_exit, NULL, NULL, APR_HOOK_MIDDLE);
 }