API JSON can not connect to website after using cloudflare

api
json

#1

Dear

I have problem in connection my API [json format] after using cloudflare for my website

I have 2 server,…server A and server B
server A => without cloudflare
server B => using cloudflare

before using cloudflare,…the API between server A and server B still working,…
after using cloudlfare,…the API can’t working

I already add the IP Address of server A to whitelist in cloudflare
but sometime connected,…sometime can’t connect
maybe the problem in “Challenge Passage”
I don’t know how to solve this problem,
please any help

thank you in advance

Best Regards

Johanes


#2

What port(s) you are using for your API?


#3

We are using HTTPS (443)
for the first hit -> it often failed
but for the second or the third hit => sometime succes, sometime failed to connect
anyone can help me,…?
thankyou in advance

Best Regards

Johanes


#4

You need to debug the application and check server response. By comparison of response when call fails and succeeds, you get enough information for the next step.