assertTrue(checkTarget.exists(), "Target file should exist after rename");

        // Verify content is preserved
        try (InputStream in = checkTarget.getInputStream()) {
            String readContent = new String(in.readAllBytes(), "UTF-8");
            assertEquals(content, readContent, "Content should be preserved after rename");
        }

        // Best effort to verify source is gone

         * calls doRecv() after and no one else but the transport thread
         * should call doRecv(). Therefore it is ok to expect that the data
         * in sbuf will be preserved for copying into BUF in doRecv().
         */

        return (long) Encdec.dec_uint16le(this.sbuf, 34) & 0xFFFF;
    }

    @Override
    protected void doSend(final Request request) throws IOException {