$npx -y skills add zhaoxuya520/reverse-skill --skill competition-websocket-runtimeInternal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for WebSocket and SSE handshakes, auth material, subscription state, realtime message schemas, reconnect behavior, and frame-driven runtime effects. Use when the user asks to inspect a WebSocket or SSE h
| 1 | # Competition WebSocket Runtime |
| 2 | |
| 3 | Use this skill only as a downstream specialization after `$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. |
| 4 | |
| 5 | Use this skill when the decisive behavior is carried by realtime handshake and frame flow rather than one-shot HTTP alone. |
| 6 | |
| 7 | Reply in Simplified Chinese unless the user explicitly requests English. |
| 8 | |
| 9 | ## Quick Start |
| 10 | |
| 11 | 1. Map the handshake first: origin, path, headers, cookies, query, auth token, and upgrade response. |
| 12 | 2. Separate connection setup, subscription messages, keepalives, server pushes, and reconnect logic. |
| 13 | 3. Record message schema, topic or channel identity, and state side effects in one chain. |
| 14 | 4. Tie frames to rendered, stored, or backend-visible effects. |
| 15 | 5. Reproduce the smallest handshake-plus-frame sequence that reaches the decisive state change. |
| 16 | |
| 17 | ## Workflow |
| 18 | |
| 19 | ### 1. Map The Realtime Handshake |
| 20 | |
| 21 | - Record the initial HTTP or SSE request, upgrade headers, cookies, tokens, query params, origin checks, and negotiated protocol. |
| 22 | - Note whether auth material is carried by headers, cookies, query strings, or initial application frames. |
| 23 | - Keep route, subscription endpoint, and session identity tied together. |
| 24 | |
| 25 | ### 2. Decode Message Flow |
| 26 | |
| 27 | - Separate subscribe, unsubscribe, ack, heartbeat, server push, reconnect, and terminal frames. |
| 28 | - Recover message types, channel IDs, schema fields, and sequencing that matter to behavior. |
| 29 | - Distinguish transport keepalive from application-level business messages. |
| 30 | |
| 31 | ### 3. Reduce To The Decisive Realtime Path |
| 32 | |
| 33 | - Compress the result to the smallest sequence: handshake -> auth or subscribe frame -> pushed or accepted frame -> resulting state change. |
| 34 | - Keep canonical frame order and any replayed minimal order side by side. |
| 35 | - If the hard part is generic protocol reassembly without runtime UI or app-state linkage, switch back to the tighter protocol skill. |
| 36 | |
| 37 | ## Read This Reference |
| 38 | |
| 39 | - Load `references/websocket-runtime.md` for the handshake checklist, frame checklist, and evidence packaging. |
| 40 | |
| 41 | ## What To Preserve |
| 42 | |
| 43 | - Handshake headers, cookies, query params, auth material, negotiated subprotocol, and channel IDs |
| 44 | - Frame schemas, subscription messages, server pushes, reconnect flow, and resulting state changes |
| 45 | - The smallest replayable realtime sequence that proves the decisive branch |