为什么 cloudflare 阻止了我的 api 请求

Question

I am trying to access the api https://api.btcxindia.com/order_book/ which is working fine in the browser however when I try to access it using file_get_contents or curl , i am getting Error 520, can someone tell why?

Tried

echo file_get_contents('https://api.btcxindia.com/order_book/'); 

And

curl 'https://api.btcxindia.com/order_book/' -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' -H 'Accept-Encoding: gzip, deflate, br' -H 'Accept-Language: en-US,en;q=0.5' -H 'Connection: keep-alive' -H 'Host: api.btcxindia.com' -H 'User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0'

Both do not work.

Answer 1

That is not CloudFlare blocking your request. Instead it is CloudFlare informing you that the API you are trying to access is offline. This could either be due to the owner's misconfiguration of DNS or their server/hosting being down.

If you own the website you may want to confirm your website is online or the DNS is configured correctly. If you do not own this website there is not much you can do but wait it out or contact the web administrator if you already know their contact details.

Edit: After discussing in the comments, it appears the website has a configuration error with a certain request type or certain clients. This is likely what is causing your error and is likely a web server error.

Regards

Answer 2

New policies on Cloudflare: https://developers.cloudflare.com/api-shield/

Availability

Cloudflare API Security products are available to Enterprise customers only, though anyone can set up Mutual TLS with a Cloudflare-managed certificate authority.