To check how headers are being sent on your Lighttpd server, including verifying if the X-Robots-Tag header is set properly, you can use the following steps:

  1. Modify Lighttpd Configuration:
    Ensure the header is being set in your Lighttpd configuration file (lighttpd.conf). Use the following syntax to add the X-Robots-Tag header:

    setenv.add-response-header = ("X-Robots-Tag" => "noindex, nofollow")

  2. Restart Lighttpd:
    After updating the configuration file, restart the server to apply changes:

    sudo systemctl restart lighttpd

  3. Use Curl to Inspect Headers:
    Test the headers by sending a request to your server with curl:

    curl -I http://yourdomain.com

    The -I option fetches only the HTTP headers. Check the output for the X-Robots-Tag header.

  4. Inspect Headers in the Browser:

    • Open the browser’s developer tools (usually accessible via F12 or right-click -> Inspect).
    • Navigate to the Network tab and refresh the page.
    • Select the request for your server and view the headers in the Headers section.

  5. Optional: Use an Online Header Checker:
    If you prefer, there are online tools such as Web Sniffer that can analyze headers for you. Simply input your server’s URL and look for the X-Robots-Tag header.

  6. Debugging Missing Headers:
    If the header doesn’t appear:

    • Double-check the syntax in lighttpd.conf.
    • Ensure there aren’t other configurations or modules overriding your headers.
    • Verify that your server is using the correct configuration file.

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