2 replies

Workers Outbound API Call: Error 525

Hi there! I'm currrently writing a small worker in Rust that needs to issue a call to an API - something trivial (and that works well on my machine).
However, when deployed to workers, it seems to result in an "error code: 525" response to the external API Request!

These are the request contents themselves:

Response { status: 525, headers: {\"cache-control\": \"private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0\", \"cf-ray\": \"98761fa430af4a5f-EWR\", \"connection\": \"keep-alive\", \"content-length\": \"15\", \"content-type\": \"text/plain; charset=UTF-8\", \"date\": \"Tue, 30 Sep 2025 19:28:29 GMT\", \"expires\": \"Thu, 01 Jan 1970 00:00:01 GMT\", \"referrer-policy\": \"same-origin\", \"server\": \"cloudflare\", \"x-frame-options\": \"SAMEORIGIN\"} }\n

Response { status: 525, headers: {\"cache-control\": \"private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0\", \"cf-ray\": \"98761fa430af4a5f-EWR\", \"connection\": \"keep-alive\", \"content-length\": \"15\", \"content-type\": \"text/plain; charset=UTF-8\", \"date\": \"Tue, 30 Sep 2025 19:28:29 GMT\", \"expires\": \"Thu, 01 Jan 1970 00:00:01 GMT\", \"referrer-policy\": \"same-origin\", \"server\": \"cloudflare\", \"x-frame-options\": \"SAMEORIGIN\"} }\n

The server to which the request is made has properly configured Let's Encrypt Certificates, thanks to Kubernetes and Cert-Manager, and does not use cloudflare proxy (it's a DNS-only record). Any idea what could be wrong here?

Response { status: 525, headers: {\"cache-control\": \"private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0\", \"cf-ray\": \"98761fa430af4a5f-EWR\", \"connection\": \"keep-alive\", \"content-length\": \"15\", \"content-type\": \"text/plain; charset=UTF-8\", \"date\": \"Tue, 30 Sep 2025 19:28:29 GMT\", \"expires\": \"Thu, 01 Jan 1970 00:00:01 GMT\", \"referrer-policy\": \"same-origin\", \"server\": \"cloudflare\", \"x-frame-options\": \"SAMEORIGIN\"} }\n

Response { status: 525, headers: {\"cache-control\": \"private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0\", \"cf-ray\": \"98761fa430af4a5f-EWR\", \"connection\": \"keep-alive\", \"content-length\": \"15\", \"content-type\": \"text/plain; charset=UTF-8\", \"date\": \"Tue, 30 Sep 2025 19:28:29 GMT\", \"expires\": \"Thu, 01 Jan 1970 00:00:01 GMT\", \"referrer-policy\": \"same-origin\", \"server\": \"cloudflare\", \"x-frame-options\": \"SAMEORIGIN\"} }\n

Workers Outbound API Call: Error 525

Similar Threads

Workers Outbound API Call: Error 525

Similar Threads

Similar Threads

Similar Threads