new file mode 100644
--- /dev/null
+++ b/src/event/quic/ngx_event_quic_connid.h
@@ -0,0 +1,25 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#ifndef _NGX_EVENT_QUIC_CONNID_H_INCLUDED_
+#define _NGX_EVENT_QUIC_CONNID_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+ngx_int_t ngx_quic_setup_connection_ids(ngx_connection_t *c,
+    ngx_quic_connection_t *qc, ngx_quic_header_t *pkt);
+void ngx_quic_clear_temp_server_ids(ngx_connection_t *c);
+ngx_int_t ngx_quic_issue_server_ids(ngx_connection_t *c);
+
+ngx_int_t ngx_quic_handle_retire_connection_id_frame(ngx_connection_t *c,
+    ngx_quic_header_t *pkt, ngx_quic_retire_cid_frame_t *f);
+ngx_int_t ngx_quic_handle_new_connection_id_frame(ngx_connection_t *c,
+    ngx_quic_header_t *pkt, ngx_quic_new_conn_id_frame_t *f);
+
+#endif /* _NGX_EVENT_QUIC_CONNID_H_INCLUDED_ */