assertEquals(0x81, type);
        assertEquals((byte) 0x81, buffer[0]);
    }

    @Test
    @DisplayName("readPacketType should throw IOException on EOF")
    void testReadPacketTypeEOF() {
        ByteArrayInputStream bais = new ByteArrayInputStream(new byte[0]);
        byte[] buffer = new byte[10];

        IOException exception = assertThrows(IOException.class, () -> {