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deepseek-harness/examples/acp-agent/web-fetch-fixture-server.mjs
2026-07-27 16:40:02 +08:00

56 lines
2.2 KiB
JavaScript

/**
* Deterministic loopback HTTP fixture for the web-fetch snapshot scenario: a
* small HTML page (headings, named entities, a GFM table, nested formatting)
* on a fixed port, so recording and keyless replay drive the REAL
* `dsh-web-fetch-local` transport and `dsh-tool-web` markdown rendering
* without external network. The port is fixed because the fetched URL is part
* of the recorded model transcript.
*/
import { createServer } from 'node:http'
/** Fixed loopback port the scenario prompt points `web_fetch` at. */
const PORT = 43117
const PAGE = `<!doctype html>
<html><head><title>Menu</title><style>.x{color:red}</style><script>ignored()</script></head>
<body>
<h1>Caf&eacute; menu</h1>
<p>Prices include <strong>service &amp; <em>tax</em></strong> &mdash; updated daily.</p>
<ul><li>Espresso</li><li>Flat white</li></ul>
<table><thead><tr><th>Drink</th><th>Price</th></tr></thead><tbody><tr><td>Espresso</td><td>&euro;2</td></tr><tr><td>Flat white</td><td>&euro;3</td></tr></tbody></table>
<p>See <a href="https://fixture.invalid/specials">today&rsquo;s specials</a>.</p>
</body></html>
`
/** Cordis plugin name. */
export const name = 'web-fetch-fixture-server'
/**
* Start the fixture server on 127.0.0.1 and register its shutdown.
* @param ctx - Cordis context; the effect disposes the server with the fiber.
*/
export async function apply(ctx) {
const server = createServer((req, res) => {
if (req.url === '/menu.html') {
res.writeHead(200, { 'content-type': 'text/html; charset=utf-8' })
res.end(PAGE)
return
}
res.writeHead(404, { 'content-type': 'text/plain; charset=utf-8' })
res.end('not found')
})
await new Promise((resolve, reject) => {
server.once('error', reject)
server.listen(PORT, '127.0.0.1', () => resolve(undefined))
})
// The fixture must never hold the process open past protocol shutdown.
server.unref()
ctx.effect(() => async () => {
await new Promise((resolve, reject) => {
server.close(error => error ? reject(error) : resolve(undefined))
// Stop accepting first so a connection cannot arrive after the forced close.
server.closeAllConnections()
})
}, 'web-fetch-fixture-server')
}