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Forum Discussion

Karthick1's avatar
Karthick1
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Dec 05, 2025

F5 XC 503 upstream_reset_before_response_started{protocol_error}

Hello Community, I would like to share some additional information regarding the 503 response code in F5 XC. When the origin server sends a response to XC that is not compliant with HTTP RFC standar...
503
Envoy
f5xc
http response codes
Karthick1's avatar
Karthick1
Icon for Cirrus rankCirrus
Dec 24, 2025

Nikoolayy1​  yes i am planning to do the same , i have added the another one you can check this as well. 

 

https://community.f5.com/discussions/TechnicalForum/f5-xc-http-404-rout-not-found--rsp-code-404/344330