CD
Cloudflare Developers•2mo ago
Henri Devigne

502 instead of 302

Hello, On a very specific url, our backend respond a 302, but. cloudflare respond a 502 instead. We have a subcription " pro plan" How troubleshoot it ?
8 Replies
SuperHelpflare
SuperHelpflare•2mo ago
Feedback
Feedback has been submitted! Thank you :)
Henri Devigne
Henri DevigneOP•2mo ago
however, curl -I is working 
➜  ~ curl 'https://xxxx.com/specific-path'
<html>
<head><title>502 Bad Gateway</title></head>
<body>
<center><h1>502 Bad Gateway</h1></center>
<hr><center>cloudflare</center>
</body>
</html>
➜  ~ curl -I 'https://xxxx.com/specific-path'
HTTP/2 302 
date: Thu, 10 Jul 2025 07:41:17 GMT
content-type: text/xml;charset=utf-8
location: https://xxxx.com/destination
server: cloudflare
p3p: CP="IDC DSP COR CURa ADMa OUR IND PHY ONL COM STA"
powered-by: PrestaShop
strict-transport-security: max-age=31536000; includeSubDomains; preload
cf-cache-status: DYNAMIC
speculation-rules: "/cdn-cgi/speculation"
set-cookie: PrestaShop-dc3322657ce8126fd222a76a5428871f=def50200673a6cf6757dbf86b9a40facb48d883864c9b8d2425f3aa47e5a770b7aed8c4237c99c64bf2ae073c3836f6d2a2f242589b1275ef82177305c3db34eaf84c0d043798d2ef29d0f9d85186aaf35fd1135519717e2259899f2a68b8af9eda68d6149cca44231beb58a2020d5a342133b3cd4b222e50f6cd9aa394520f9ec5864709ee5d2f8ba81db856be209e22d1462cd2d6518ccc41915c30402; HttpOnly; SameSite=None; Secure; Path=/; Domain=xxxxx.com Max-Age=1727999; Expires=Wed, 30 Jul 2025 07:41:16 GMT
cf-ray: 95ce6af24eb8698e-CDG
alt-svc: h3=":443"; ma=86400
➜  ~ curl 'https://xxxx.com/specific-path'
<html>
<head><title>502 Bad Gateway</title></head>
<body>
<center><h1>502 Bad Gateway</h1></center>
<hr><center>cloudflare</center>
</body>
</html>
➜  ~ curl -I 'https://xxxx.com/specific-path'
HTTP/2 302 
date: Thu, 10 Jul 2025 07:41:17 GMT
content-type: text/xml;charset=utf-8
location: https://xxxx.com/destination
server: cloudflare
p3p: CP="IDC DSP COR CURa ADMa OUR IND PHY ONL COM STA"
powered-by: PrestaShop
strict-transport-security: max-age=31536000; includeSubDomains; preload
cf-cache-status: DYNAMIC
speculation-rules: "/cdn-cgi/speculation"
set-cookie: PrestaShop-dc3322657ce8126fd222a76a5428871f=def50200673a6cf6757dbf86b9a40facb48d883864c9b8d2425f3aa47e5a770b7aed8c4237c99c64bf2ae073c3836f6d2a2f242589b1275ef82177305c3db34eaf84c0d043798d2ef29d0f9d85186aaf35fd1135519717e2259899f2a68b8af9eda68d6149cca44231beb58a2020d5a342133b3cd4b222e50f6cd9aa394520f9ec5864709ee5d2f8ba81db856be209e22d1462cd2d6518ccc41915c30402; HttpOnly; SameSite=None; Secure; Path=/; Domain=xxxxx.com Max-Age=1727999; Expires=Wed, 30 Jul 2025 07:41:16 GMT
cf-ray: 95ce6af24eb8698e-CDG
alt-svc: h3=":443"; ma=86400
> User-Agent: curl/8.7.1
> Accept: */*
> 
* Request completely sent off
< HTTP/2 502 
< server: cloudflare
< date: Thu, 10 Jul 2025 10:19:27 GMT
< content-type: text/html
< content-length: 155
< cf-ray: 95cf52a4abe1d0ab-CDG
< 
> User-Agent: curl/8.7.1
> Accept: */*
> 
* Request completely sent off
< HTTP/2 502 
< server: cloudflare
< date: Thu, 10 Jul 2025 10:19:27 GMT
< content-type: text/html
< content-length: 155
< cf-ray: 95cf52a4abe1d0ab-CDG
<
in direct, the server respond well ( when i bypass cloudflare )
Laudian
Laudian•2mo ago
Can you show how the server responds when you bypass Cloudflare?
Henri Devigne
Henri DevigneOP•2mo ago
The header show 
< HTTP/1.1 302 Moved Temporarily
< Server: nginx/1.20.1
< Date: Thu, 10 Jul 2025 11:12:56 GMT
< Content-Type: text/xml;charset=utf-8
< Content-Length: 0
< Connection: keep-alive
< P3P: CP="IDC DSP COR CURa ADMa OUR IND PHY ONL COM STA"
< Powered-By: PrestaShop
< Content-Encoding: gzip
< Set-Cookie: PrestaShop-fesfesfesffesfesf=esfesesfesffseffse; expires=Wed, 30-Jul-2025 11:12:55 GMT; Max-Age=1727999; path=/;SameSite = None;Secure; domain=www.petit-beguin.fr; secure; HttpOnly
< Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
< Upgrade: h2,h2c
< Location: https://xxxxx.com/a-path
< 
* Connection #0 to host www.petit-beguin.fr left intact
< HTTP/1.1 302 Moved Temporarily
< Server: nginx/1.20.1
< Date: Thu, 10 Jul 2025 11:12:56 GMT
< Content-Type: text/xml;charset=utf-8
< Content-Length: 0
< Connection: keep-alive
< P3P: CP="IDC DSP COR CURa ADMa OUR IND PHY ONL COM STA"
< Powered-By: PrestaShop
< Content-Encoding: gzip
< Set-Cookie: PrestaShop-fesfesfesffesfesf=esfesesfesffseffse; expires=Wed, 30-Jul-2025 11:12:55 GMT; Max-Age=1727999; path=/;SameSite = None;Secure; domain=www.petit-beguin.fr; secure; HttpOnly
< Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
< Upgrade: h2,h2c
< Location: https://xxxxx.com/a-path
< 
* Connection #0 to host www.petit-beguin.fr left intact
( when i run curl -v
Laudian
Laudian•2mo ago
so there is no response body?
Henri Devigne
Henri DevigneOP•2mo ago
no it's a 302
Laudian
Laudian•2mo ago
Just curious, because you have both content-type and encoding set Might be that Cloudflare has problems with that. Not home atm, but I'll try later if that's what causes the Cloudflare 502
Henri Devigne
Henri DevigneOP•2mo ago
okay thanks, keep me informed i will try some test by the waty Look this fixes my issue ! Thanks a lot !

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