It is normal for Hong Kong servers to use curl access interface, but an error will be reported if php access is used.

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curl

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Error 502 Ray ID: 43d40c51b8c3a2d8 2018-07-20 08:27:42 UTC
Bad gateway
You
Browser
Working
Hong Kong
Cloudflare
Working
www.okex.com
Host
Error
What happened?
The web server reported a bad gateway error.

What can I do?
Please try again in a few minutes.

Cloudflare Ray ID: 43d40c51b8c3a2d8 Your IP: 47.52.20.51 Performance & security by Cloudflare

the return result of the php request is abnormal as shown in the above figure. At the beginning, the php request is fine, but then the error has been reported all the time. What is the reason for this error?

Mar.29,2021

Telecom line access https deployed in both Singapore and Hong Kong computer rooms of Aliyun has this problem. It is also a normal https failure of http, and one of Ali's Filter devices is interfering. For details, consult Aliyun customer service or change servers

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