topic
Verified 2026-09-18

Proxy-Status and Gateway Diagnostics

Proxy-Status reports how a proxy or gateway handled a request and why an intermediary produced an error.

Use structured Proxy-Status diagnostics for operators while removing sensitive node names, addresses, cache keys, and credentials before exposing them to clients.

httpproxyintermediariesheadersecurity

Reference (http)

Proxy-Status: envoy; error=connection_timeout; next-hop="upstream"

Use structured Proxy-Status diagnostics for operators while removing sensitive node names, addresses, cache keys, and credentials before exposing them to clients.

Common mistakes

  • Forwarding internal diagnostics unchanged to untrusted clients or treating proxy error parameters as stable application API fields.

Related

Proxies, Gateways, and Forwarded HeadersHTTP 502 Bad GatewayHTTP 504 Gateway Timeout

Sources

Permalink: https://merginit.com/reference/http/proxy-status-deep-dive