119 lines
6.8 KiB
JavaScript
119 lines
6.8 KiB
JavaScript
// server/index.js — process entry & boot (DESIGN §1, §2). Plain node:http + ws, no framework: startServer() below
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// wires the modules under server/http/, in this order —
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//
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// http/config.js ROOT, the served directories, the environment (PORT 3000, HOST 0.0.0.0, TRUST_PROXY auto, DEBUG),
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// which startServer() options go to net.js / lobby.js, the console logger
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// http/websocket.js session wiring (SessionRegistry → Lobby → Network) and the WebSocket at /ws (maxPayload 64 KB;
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// refused at upgrade with 404 / 429 per network / 503)
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// http/static.js the static mounts (/ → public/, /data/, /shared/, /sim/ `.js` only), the /data.js browser stand-in,
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// the content packs (/packs/index.json, /packs/<id>/<file> — the registry is packs.js)
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// http/media.js /media/bgm/act1 → public/assets/audio/bgm/act1.mp3 (audio addressed without its extension)
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// http/files.js one file → response: MIME, gzip + memory cache, ETag / Last-Modified / 304, Cache-Control, ranges
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// http/buildTag.js the build tag of the served browser runtime (/healthz `build`, public/js/ui/buildGuard.js)
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// http/routes.js the request listener: security headers, 414 / 400 / 405, GET /healthz → JSON status, else static
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// http/common.js what every answer shares: security headers, URL split, error page, JSON replies, bare 400
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// http/boot.js a pending update package first (update.js: old files deleted, the install verified against
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// MANIFEST.json), banner (Local / LAN / tunnel URLs), port-in-use hint, graceful shutdown on SIGINT /
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// SIGTERM
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//
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// Per-network limits for internet clients (see net.js clientAddress; local/LAN peers are exempt): open sockets
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// (maxConnectionsPerAddr, refused at upgrade with 429), rooms and running matches (lobby.js).
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//
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// Programmatic use (tests): `const srv = await startServer({ port: 0, quiet: true }); … await srv.close();`
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// The server only auto-listens when this file is the process entry point.
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import http from 'node:http';
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import { getData, loadData } from './data.js';
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import { ROOT, listenAddress, serveDirs, makeLogger, parseTrustProxy } from './http/config.js';
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import { WS_MAX_PAYLOAD, createSessionStack, attachWebSocket } from './http/websocket.js';
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import { DATA_SHIM_JS, createStaticHandler } from './http/static.js';
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import { createPackRegistry } from './packs.js';
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import { MIME, COMPRESSIBLE, acceptsGzip, parseRange } from './http/files.js';
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import { BUILD_INPUTS, computeBuildTag, buildTag, resetBuildTag } from './http/buildTag.js';
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import { createRequestHandler } from './http/routes.js';
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import { answerClientError } from './http/common.js';
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import { lanUrls, isProcessEntry, runMain } from './http/boot.js';
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// The public API of this module (tests and tools import it from here); the code lives in ./http/.
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export {
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ROOT, WS_MAX_PAYLOAD, DATA_SHIM_JS, MIME, COMPRESSIBLE, BUILD_INPUTS, computeBuildTag, buildTag, resetBuildTag,
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acceptsGzip, parseRange, createStaticHandler, lanUrls, parseTrustProxy,
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};
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/**
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* Build and start the HTTP + WebSocket server.
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* @param {{
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* port?: number, host?: string, quiet?: boolean, log?: object,
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* publicDir?: string, dataDir?: string, sharedDir?: string, packsDir?: string,
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* MatchClass?: Function, seedFn?: () => number,
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* lobbyGraceMs?: number, reconnectWindowMs?: number, heartbeatMs?: number, helloTimeoutMs?: number,
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* ratePerSec?: number, rateBurst?: number, maxConnections?: number, maxRooms?: number,
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* maxConnectionsPerAddr?: number, maxRoomsPerAddr?: number, maxMatchesPerAddr?: number, resyncMinGapMs?: number,
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* heavyPerSec?: number, heavyBurst?: number, trustProxy?: 'auto' | boolean, soloReconnectWindowMs?: number,
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* }} [opts]
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* @returns {Promise<{ port: number, host: string, url: string, server: http.Server, wss: import('ws').WebSocketServer,
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* lobby: import('./lobby.js').Lobby, network: import('./net.js').Network,
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* registry: import('./net.js').SessionRegistry, packs: ReturnType<typeof createPackRegistry>,
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* close: () => Promise<void> }>}
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*/
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export async function startServer(opts = {}) {
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const { port, host } = listenAddress(opts);
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const log = opts.log || makeLogger(!!opts.quiet);
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const { publicDir, dataDir, sharedDir, packsDir } = serveDirs(opts);
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// The process-wide singleton serves the default data dir; a custom dir (tests) gets its own copy.
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const data = opts.dataDir ? loadData(dataDir, { log }) : getData({ dir: dataDir, log });
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const { registry, lobby, network } = createSessionStack(opts, { data, log });
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// content packs (docs/PACKS.md): scanned now — the start log names them — and again whenever their folders change
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const packs = createPackRegistry({ publicDir, dataDir, packsDir }, { log });
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packs.refresh(true);
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const serveStatic = createStaticHandler({ publicDir, dataDir, sharedDir, packsDir, packs, log });
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const startedAt = Date.now();
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// The tag is per process (see buildTag): read the browser runtime once, here, not on every /healthz.
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resetBuildTag();
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buildTag();
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const server = http.createServer(createRequestHandler({ serveStatic, health: { startedAt, network, registry, lobby }, log }));
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server.on('clientError', answerClientError);
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const wss = attachWebSocket(server, { network, log });
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try {
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await new Promise((resolve, reject) => {
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const onError = (e) => { server.off('listening', onListening); reject(e); };
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const onListening = () => { server.off('error', onError); resolve(); };
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server.once('error', onError);
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server.once('listening', onListening);
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server.listen(port, host);
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});
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} catch (e) {
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network.close(); // stop heartbeat/sweep timers of the half-built server
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throw e;
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}
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server.on('error', (e) => log.error('[http] server error', e));
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const addr = server.address();
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const actualPort = typeof addr === 'object' && addr ? addr.port : port;
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const url = `http://${host === '0.0.0.0' || host === '::' ? 'localhost' : host}:${actualPort}`;
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let closing = null;
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async function close() {
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if (closing) return closing;
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closing = (async () => {
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try { lobby.shutdown('shutdown'); } catch (e) { log.error('[shutdown] lobby', e); }
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network.close();
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await new Promise((resolve) => {
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server.close(() => resolve());
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server.closeIdleConnections?.();
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setTimeout(() => { server.closeAllConnections?.(); }, 500).unref();
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});
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try { wss.close(); } catch { /* ignore */ }
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})();
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return closing;
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}
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return { port: actualPort, host, url, server, wss, lobby, network, registry, packs, close };
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}
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// `node server/index.js` / npm start: listen, print the banner, stop on SIGINT / SIGTERM (http/boot.js).
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if (isProcessEntry(import.meta.url)) runMain(startServer);
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