다음으로 이어서 보기 좋은 문제 Network Advanced A split-horizon DNS design works for browsers and fails for one API client The hostname is the same, but the client lands on the wrong certificate and service view. Network Intermediate A Cloudflare Tunnel route is correct and one app still loops The public hostname is right, but the origin header override still presents the retired app host to the backend. Network Advanced A recursive resolver over TLS stays healthy and validation still fails Connectivity is fine, but certificate pinning still compares against a key that the upstream no longer uses on the active chain. Network Advanced A Cloudflare Tunnel reports healthy and WebSocket traffic still fails The tunnel itself is fine, yet one application path downgrades the request before it reaches the service that expects a real upgrade handshake.
Network Advanced A split-horizon DNS design works for browsers and fails for one API client The hostname is the same, but the client lands on the wrong certificate and service view.
Network Intermediate A Cloudflare Tunnel route is correct and one app still loops The public hostname is right, but the origin header override still presents the retired app host to the backend.
Network Advanced A recursive resolver over TLS stays healthy and validation still fails Connectivity is fine, but certificate pinning still compares against a key that the upstream no longer uses on the active chain.
Network Advanced A Cloudflare Tunnel reports healthy and WebSocket traffic still fails The tunnel itself is fine, yet one application path downgrades the request before it reaches the service that expects a real upgrade handshake.