new file mode 100644
--- /dev/null
+++ b/src/core/ngx_sendfile.h
@@ -0,0 +1,20 @@
+#ifndef _NGX_SENDFILE_H_INCLUDED_
+#define _NGX_SENDFILE_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_types.h>
+#include <ngx_files.h>
+#include <ngx_socket.h>
+#include <ngx_log.h>
+#include <ngx_sendv.h>
+
+int ngx_sendfile(ngx_socket_t s,
+                 ngx_iovec_t *headers, int hdr_cnt,
+                 ngx_fd_t fd, off_t offset, size_t nbytes,
+                 ngx_iovec_t *trailers, int trl_cnt,
+                 off_t *sent,
+                 ngx_log_t *log);
+
+
+#endif /* _NGX_SENDFILE_H_INCLUDED_ */