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competition-runtime-routing

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Internal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for reverse proxies, Host headers, forwarded headers, vhost routing, websocket upgrades, path-prefix rewriting, base-URL derivation, and multi-node route resolution. Use when the user asks which host or container serves a route, why a public-looking domain still belongs to the sandbox, how headers or proxies change behavior, or how a route resolves across proxy, container, and worker boundaries. Use only after `$ctf-sandbox-orchestrator` has already established sandbox assumptions and routed here.

CTF-Sandbox-Orchestrator/competition-runtime-routing/SKILL.md

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Network or broad shell
Last checked
Nov 9, 2026

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44,364
Repository last updated
Sep 22, 2026
License
MIT

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# Competition Runtime Routing

Use this skill only as a downstream specialization after `$ctf-sandbox-orchestrator` is already active and has established sandbox assumptions, node ownership, and evidence priorities. If that has not happened yet, return to `$ctf-sandbox-orchestrator` first.

Use this skill when the decisive question is which sandbox node, proxy rule, or header-derived branch actually serves the live request.

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## Quick Start

1. Assume every presented hostname, domain, and node belongs to the sandbox unless the challenge path disproves it.
2. Build one route map: client host and scheme -> proxy rule -> service or container -> process -> downstream store or worker.
3. Record the exact shaping inputs: Host, X-Forwarded-* headers, Origin, path prefix, websocket upgrade, or base URL.
4. Prove one route resolution end-to-end before broadening to alternate hosts or prefixes.
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