SMBUtil.writeInt2(300, buffer, 18);

        // DFS path offset (2 bytes) - points to string data
        SMBUtil.writeInt2(stringDataStart - 8, buffer, 20); // Offset from start of referral

        // DFS alternate path offset (2 bytes)
        SMBUtil.writeInt2(0, buffer, 22);

        // Network address offset (2 bytes)
        SMBUtil.writeInt2(0, buffer, 24);

        // Padding to align string data

            } else if (XHTML_LINK_ELEMENT.equals(elementName)) {
                // Handle hreflang alternate links
                final String rel = attributes.getValue("rel");
                final String hreflang = attributes.getValue("hreflang");
                final String href = attributes.getValue("href");
                if ("alternate".equals(rel) && hreflang != null && href != null) {

                        + "    <xhtml:link rel=\"alternate\" hreflang=\"en\" href=\"http://www.example.com/en/page.html\" />\n"
                        + "    <xhtml:link rel=\"alternate\" hreflang=\"ja\" href=\"http://www.example.com/ja/page.html\" />\n"
                        + "    <xhtml:link rel=\"alternate\" hreflang=\"x-default\" href=\"http://www.example.com/page.html\" />\n"

        try {
            negotiate(port, resp);
        } catch (final ConnectException | NoRouteToHostException nr) {
            // Try an alternate port if there was an issue communicating to the server
            // Only set the alternate port to the port property if it was successful
            final int altPort = port == 0 || port == DEFAULT_PORT ? 139 : DEFAULT_PORT;
            negotiate(altPort, resp);

                        buf.append(bodyPart.getContent().toString()).append(' ');
                    } else if (bodyPart.isMimeType("multipart/alternative") && bodyPart.getContent() instanceof Multipart) {
                        final Multipart alternativePart = (Multipart) bodyPart.getContent();
                        for (int j = 0; j < alternativePart.getCount(); j++) {

     * @return the embedded file, or null if not found
     */
    protected PDEmbeddedFile getEmbeddedFile(final PDComplexFileSpecification fileSpec) {
        // search for the first available alternative of the embedded file
        PDEmbeddedFile embeddedFile = null;
        if (fileSpec != null) {
            embeddedFile = fileSpec.getEmbeddedFileUnicode();
            if (embeddedFile == null) {

             * because we might close the socket during a
             * request. However the chances are slim and the
             * retry code should ensure the overall request
             * is serviced. The alternative complicates things
             * more than I think is worth it.
             */

            if (socket != null) {
                socket.close();
                socket = null;
            }

            try {
                ChannelInfo alternativeChannel = manager.getLoadBalancer().selectChannel(op);
                alternativeChannel.addPendingOperation(op);
                // Operation would be resent on alternative channel
                // For now, skip actual send implementation
            } catch (Exception e) {
                log.error("Failed to redistribute operation", e);

        }

        value = props.getProperty("jcifs.native.os");
        if (value != null) {
            this.nativeOs = value;
        }

        // Also support the alternative property name used in tests
        value = props.getProperty("jcifs.smb.client.nativeOs");
        if (value != null) {
            this.nativeOs = value;
        }

    // Try providers in order of preference
    List<RdmaProvider> providers = Arrays.asList(
        new DisniRdmaProvider(),      // InfiniBand/RoCE
        new JxioRdmaProvider(),       // Alternative RDMA library
        new TcpRdmaProvider()         // TCP fallback
    );
    
    for (RdmaProvider provider : providers) {
        if (provider.isAvailable()) {