while (!rdmaConnection.canSend() && System.currentTimeMillis() < deadline) {
            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
                throw new IOException("Interrupted waiting for send credit", e);
            }
        }
        
        if (!rdmaConnection.canSend()) {

    /**
     * Check if connection can send data (has send credits and is established)
     *
     * @return true if can send, false otherwise
     */
    public boolean canSend() {
        return sendCredits.get() > 0 && state == RdmaConnectionState.ESTABLISHED;
    }

    /**
     * Consume a send credit
     */
    public void consumeSendCredit() {

            // Given
            when(mockResource.canRead()).thenReturn(true);
            when(mockResource.canWrite()).thenReturn(false);

            // When
            boolean canRead = mockResource.canRead();
            boolean canWrite = mockResource.canWrite();

            // Then
            assertTrue(canRead, "Should be readable");
            assertFalse(canWrite, "Should not be writable");

        assertTrue(initialFile.exists(), "Initial file should exist");
        assertTrue(initialFile.isFile(), "Initial file should be a file");
        assertTrue(initialFile.canRead(), "Should be able to read initial file");

        log.info("Basic connectivity test passed - can connect, list, and read files");
    }

    @Test
    void testCreateNewFile() throws Exception {

        final File tmpDir = Curl.tmpDir;

        // ## Assert ##
        assertNotNull(tmpDir);
        assertTrue(tmpDir.exists());
        assertTrue(tmpDir.isDirectory());
        assertTrue(tmpDir.canRead());
        assertTrue(tmpDir.canWrite());
        assertEquals(new File(System.getProperty("java.io.tmpdir")).getAbsolutePath(), tmpDir.getAbsolutePath());
    }

    @Test

        assertNotNull(tempFile);
        assertTrue(tempFile.exists());

        // Verify file permissions (readable and writable by owner)
        assertTrue(tempFile.canRead());
        assertTrue(tempFile.canWrite());

        // Clean up
        tempFile.delete();
    }

    public void test_createResponseBodyFile_exceptionOnRead() {

                responseData.setCharSet(getCharSet(file));
                responseData.setLastModified(new Date(file.lastModified()));
                if (file.canRead()) {
                    final MimeTypeHelper mimeTypeHelper = crawlerContainer.getComponent("mimeTypeHelper");
                    try (final InputStream is = new BufferedInputStream(new FileInputStream(file))) {

            // Arrange
            doReturn(false).when(smbFile).isDirectory();
            doReturn(true).when(smbFile).exists();

            // Act & Assert
            assertTrue(smbFile.canRead());
        }

        @Test
        void testCanWrite() throws SmbException {
            // Arrange
            doReturn(0).when(smbFile).getAttributes(); // No read-only attribute

                        responseData.addMetaData(entry.getKey(), entry.getValue());
                    }
                }

                if (file.canRead()) {
                    final MimeTypeHelper mimeTypeHelper = crawlerContainer.getComponent("mimeTypeHelper");
                    if (includeContent) {
                        if (logger.isDebugEnabled()) {

                        responseData.addMetaData(entry.getKey(), entry.getValue());
                    }
                }

                if (file.canRead()) {
                    final MimeTypeHelper mimeTypeHelper = crawlerContainer.getComponent("mimeTypeHelper");
                    if (includeContent) {
                        if (logger.isDebugEnabled()) {