new file mode 100644
--- /dev/null
+++ b/src/http/v3/ngx_http_v3_streams.h
@@ -0,0 +1,43 @@
+
+/*
+ * Copyright (C) Roman Arutyunyan
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#ifndef _NGX_HTTP_V3_STREAMS_H_INCLUDED_
+#define _NGX_HTTP_V3_STREAMS_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+void ngx_http_v3_init_uni_stream(ngx_connection_t *c);
+ngx_int_t ngx_http_v3_register_uni_stream(ngx_connection_t *c, uint64_t type);
+
+ngx_connection_t *ngx_http_v3_create_push_stream(ngx_connection_t *c,
+    uint64_t push_id);
+ngx_int_t ngx_http_v3_set_max_push_id(ngx_connection_t *c,
+    uint64_t max_push_id);
+ngx_int_t ngx_http_v3_cancel_push(ngx_connection_t *c, uint64_t push_id);
+ngx_int_t ngx_http_v3_cancel_stream(ngx_connection_t *c, ngx_uint_t stream_id);
+
+ngx_int_t ngx_http_v3_send_goaway(ngx_connection_t *c, uint64_t id);
+ngx_int_t ngx_http_v3_send_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic,
+    ngx_uint_t index, ngx_str_t *value);
+ngx_int_t ngx_http_v3_send_insert(ngx_connection_t *c, ngx_str_t *name,
+    ngx_str_t *value);
+ngx_int_t ngx_http_v3_send_set_capacity(ngx_connection_t *c,
+    ngx_uint_t capacity);
+ngx_int_t ngx_http_v3_send_duplicate(ngx_connection_t *c, ngx_uint_t index);
+ngx_int_t ngx_http_v3_send_ack_header(ngx_connection_t *c,
+    ngx_uint_t stream_id);
+ngx_int_t ngx_http_v3_send_cancel_stream(ngx_connection_t *c,
+    ngx_uint_t stream_id);
+ngx_int_t ngx_http_v3_send_inc_insert_count(ngx_connection_t *c,
+    ngx_uint_t inc);
+
+
+#endif /* _NGX_HTTP_V3_STREAMS_H_INCLUDED_ */