assertTrue(e.getMessage().contains("unexpected EOF"));
        }
    }

    @Test
    @DisplayName("Keep-alive packets are transparently skipped")
    void keepAlivePacketsAreSkipped() throws IOException {
        // Create stream with keep-alive followed by message
        byte[] data = new byte[] { 30, 60 };
        byte[] fullData = concat(keepAliveHeader(), messageHeader(2), data);