Cloudflare

Some sites use “I’m Under Attack Mode” (IUAM) to protect themselves against DDoS attacks. Unfortunately, this mode can also interfere with HDoujin Downloader, but there are some ways of working around it.

The challenges are based around JavaScript that is interpreted by the web browser, returning a result to the webpage, which decides whether or not to allow further interaction. HDoujin Downloader has several “solvers” that attempt to generate solutions to the challenges.

“Your connection to example.com is being blocked by Cloudflare’s DDoS protection”

If you get an error message that says something along these lines, that means the challenge was detected, but was unable to be solved.

When this happens, you should check your Cloudflare settings under “Tools > Preferences > Cloudflare”. Make sure that your “Challenge solver” setting is set to “Web Driver” (which is the most reliable solver that uses your installed web browser to solve the challenge).1

If you’re still getting the same error message, it’s possible that you’re encountering a captcha challenge. In this case, go back to your Cloudflare settings under “Tools > Preferences > Cloudflare”, and uncheck “Headless”. This will allow you to interact directly with the captcha and solve it manually.

“Your connection to example.com is being blocked by Cloudflare’s spam filter”

If you get an error message that says something along these lines, that means your IP address is blacklisted by Cloudflare. This is not an IP ban, but it means that you will need to solve a captcha in order to access the website.

When this happens, you should check your Cloudflare settings under “Tools > Preferences > Cloudflare”. Make sure that your `Challenge solver` setting is set to “Web Driver” (which is the most reliable solver that uses your installed web browser to solve the challenge), and the “Headless” setting is unchecked, which will allow you to solve the captcha manually.1

Alternatively, you can try using a VPN or proxy to change your IP address to one that isn’t blacklisted. You can find more information about using VPNs with HDoujin Downloader here.

If all else fails…

If all else fails, you can generate a log file and email it to me, and I’ll see what I can do!


1Note that this setting is only available if you have a supported web browser installed, which are shown under “Tools > Preferences > External Applications”.