Appendix – Testing, Troubleshooting, and Hardening

Checklists for functional testing, common failures, and security-minded tweaks.

Functional Test Checklist

• Port binding, route reachability, file presence, success + error paths.

• Limit enforcement, callback firing, clean shutdown.

Common Issues

• Port in use; wrong working directory; missing permissions; malformed base64; incorrect Content-Type.

Hardening Ideas (Optional)

• Randomized route length and charset.

• Loopback-only admin endpoints and optional bind control.

• Max payload size, simple token/HMAC on admin endpoints (if needed).

• Minimal request logging (avoid over-collection).

Operational Hygiene

• Artifact directory hygiene and naming convention.

• Log retention/rotation for lab notes.