--- a/src/os/unix/ngx_freebsd_sendfile_chain.c
+++ b/src/os/unix/ngx_freebsd_sendfile_chain.c
@@ -368,42 +368,7 @@ ngx_freebsd_sendfile_chain(ngx_connectio
 
         c->sent += sent;
 
-        for ( /* void */ ; in; in = in->next) {
-
-            if (ngx_buf_special(in->buf)) {
-                continue;
-            }
-
-            if (sent == 0) {
-                break;
-            }
-
-            size = ngx_buf_size(in->buf);
-
-            if (sent >= size) {
-                sent -= size;
-
-                if (ngx_buf_in_memory(in->buf)) {
-                    in->buf->pos = in->buf->last;
-                }
-
-                if (in->buf->in_file) {
-                    in->buf->file_pos = in->buf->file_last;
-                }
-
-                continue;
-            }
-
-            if (ngx_buf_in_memory(in->buf)) {
-                in->buf->pos += (size_t) sent;
-            }
-
-            if (in->buf->in_file) {
-                in->buf->file_pos += sent;
-            }
-
-            break;
-        }
+        in = ngx_handle_sent_chain(in, sent);
 
 #if (NGX_HAVE_AIO_SENDFILE)
         if (c->busy_sendfile) {