forked from molecule-ai/molecule-core
51a21ea04f
The plugin now ships everything a user needs to wire Chrome on their host to workspaces inside Docker: - host-bridge/cdp-proxy.cjs — rewrites the Host header so Chrome accepts DevTools Protocol connections from container-originated traffic, and forwards both HTTP (tab list, screenshots) and WebSocket upgrades. - host-bridge/install-host-bridge.sh — one-command install on macOS (launchd user agent) or Linux (systemd --user unit). `uninstall` subcommand cleans up. No root required. - skills/browser-automation/lib/connect.js — the mandatory helper consumers already use; re-exported here so the plugin is self-contained. - SKILL.md — documents the one-time host setup and the existing defaultViewport:null + disconnect-not-close rules. The 2026-04-15 social-media-poster incident (3h debug chasing phantom "sessions expired" errors on an 800x600 viewport) is captured inline. Smoke-tested on macOS: install script registered the agent, proxy listens on 0.0.0.0:9223, and a live workspace container (ws-bee4d521-3d3) successfully reached Chrome via host.docker.internal:9223. This replaces ad-hoc per-user CDP proxies and makes the plugin usable by any Molecule operator, not just the Reno Stars org. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
79 lines
2.7 KiB
JavaScript
Executable File
79 lines
2.7 KiB
JavaScript
Executable File
#!/usr/bin/env node
|
|
/**
|
|
* CDP proxy — bridges a Docker container to the user's Chrome running on the host.
|
|
*
|
|
* Why: Chrome on macOS rejects DevTools Protocol connections whose Host header
|
|
* is anything other than `localhost`. A container hitting `host.docker.internal:9222`
|
|
* fails the check. This proxy listens on 0.0.0.0:9223, rewrites the Host header,
|
|
* and forwards both HTTP (tab listing, screenshots) and WebSocket upgrades.
|
|
*
|
|
* Usage:
|
|
* # Launch your Chrome with the debug port once (once per reboot):
|
|
* open -na "Google Chrome" --args \
|
|
* --user-data-dir="$HOME/.chrome-molecule" \
|
|
* --profile-directory=Default \
|
|
* --remote-debugging-port=9222
|
|
*
|
|
* # Then start the proxy (stays in foreground; run in a launchd/systemd unit):
|
|
* node cdp-proxy.cjs
|
|
*
|
|
* Env overrides:
|
|
* CHROME_PORT (default 9222)
|
|
* PROXY_PORT (default 9223)
|
|
* BIND_ADDR (default 0.0.0.0)
|
|
*
|
|
* Container side: connect via `host.docker.internal:9223` (Docker Desktop) or
|
|
* `172.17.0.1:9223` (Linux). The bundled `lib/connect.js` helper auto-detects.
|
|
*/
|
|
const http = require('http');
|
|
const net = require('net');
|
|
|
|
const CHROME_PORT = parseInt(process.env.CHROME_PORT || '9222', 10);
|
|
const PROXY_PORT = parseInt(process.env.PROXY_PORT || '9223', 10);
|
|
const BIND_ADDR = process.env.BIND_ADDR || '0.0.0.0';
|
|
|
|
const proxy = http.createServer((req, res) => {
|
|
const options = {
|
|
hostname: '127.0.0.1',
|
|
port: CHROME_PORT,
|
|
path: req.url,
|
|
method: req.method,
|
|
headers: { ...req.headers, host: `localhost:${CHROME_PORT}` },
|
|
};
|
|
const proxyReq = http.request(options, (proxyRes) => {
|
|
res.writeHead(proxyRes.statusCode, proxyRes.headers);
|
|
proxyRes.pipe(res);
|
|
});
|
|
req.pipe(proxyReq);
|
|
proxyReq.on('error', (e) => {
|
|
res.writeHead(502);
|
|
res.end(`proxy error: ${e.code || e.message}`);
|
|
});
|
|
});
|
|
|
|
proxy.on('upgrade', (req, socket, head) => {
|
|
const conn = net.connect(CHROME_PORT, '127.0.0.1', () => {
|
|
const upgradeReq =
|
|
`${req.method} ${req.url} HTTP/1.1\r\n` +
|
|
`Host: localhost:${CHROME_PORT}\r\n` +
|
|
Object.entries(req.headers)
|
|
.filter(([k]) => k.toLowerCase() !== 'host')
|
|
.map(([k, v]) => `${k}: ${v}`)
|
|
.join('\r\n') +
|
|
'\r\n\r\n';
|
|
conn.write(upgradeReq);
|
|
if (head.length) conn.write(head);
|
|
socket.pipe(conn);
|
|
conn.pipe(socket);
|
|
});
|
|
conn.on('error', () => socket.destroy());
|
|
socket.on('error', () => conn.destroy());
|
|
});
|
|
|
|
proxy.listen(PROXY_PORT, BIND_ADDR, () => {
|
|
console.log(`cdp-proxy listening on ${BIND_ADDR}:${PROXY_PORT} → 127.0.0.1:${CHROME_PORT}`);
|
|
});
|
|
|
|
process.on('SIGTERM', () => proxy.close(() => process.exit(0)));
|
|
process.on('SIGINT', () => proxy.close(() => process.exit(0)));
|