Files
proxy/nodejs/app.js
T
wmantly a19ff81c76 Fix a worker-blocking Lua socket call and add gzip/caching for static assets
- ops/nginx_conf/targetinfo.lua's wildcard-subdomain lookup fallback used
  classic LuaSocket (require("socket.unix")) instead of an OpenResty
  cosocket. LuaSocket is blocking, and called from an nginx worker it
  stalls the ENTIRE worker — every other in-flight connection on it — for
  the round-trip to the Node app. Worse, the Node side never
  newline-terminated its response, so the old blocking receive() only ever
  returned via its read-timeout-then-partial-read fallback, meaning every
  single cache-miss lookup paid a fixed timeout penalty while blocking the
  whole worker. Replaced with an ngx.socket.tcp() cosocket (unix-domain via
  "unix:/path", the only cosocket API this lua-nginx-module ships) and
  newline-terminated the Node service's responses so receive() actually
  completes instead of timing out. Verified against a live container:
  previously this crashed OpenResty's Lua VM entirely
  (ngx.socket.unix doesn't exist); fixed version resolves fresh wildcard
  subdomains in ~2ms.
- Add gzip compression (`compression` middleware) and far-future
  Cache-Control on static assets (7d for vendor libs under
  /static-modules, 1h for the app's own /static JS/CSS, which isn't
  cache-busted). The admin UI is a traditional multi-page app that loads
  ~13 separate vendor/app JS+CSS files on every full navigation; previously
  none of them were compressed and Cache-Control was `max-age=0` (Express's
  default), forcing a revalidation round-trip for every asset on every page
  view.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-15 00:41:31 -04:00

109 lines
3.5 KiB
JavaScript
Executable File

'use strict';
const path = require('path');
const ejs = require('ejs')
const express = require('express');
const compression = require('compression');
// Set up the express app.
const app = express();
// The app always runs behind the OpenResty reverse proxy (a single hop) which
// sets X-Real-IP / X-Forwarded-For. Trust that one proxy so req.ip reflects the
// real client — needed for correct per-client rate limiting on /api/auth.
app.set('trust proxy', 1);
// Hold list of functions to run when the server is ready
app.onListen = [];
// Allow the express app to be exported into other files.
module.exports = app;
// Hold onto the auth middleware
const middleware = require('./middleware/auth');
// Grab the projects PubSub
app.contoller = require('./controller');
/**
* Start background services
* These services run independently of the HTTP server:
* - host_lookup: Unix socket server for OpenResty host lookups
* - host_scheduler: Scheduled tasks for wildcard cert renewal
*/
require('./services/host_lookup');
require('./services/host_scheduler');
require('./services/dynamic_dns');
// Push pubsub over the socket and back.
app.onListen.push(function(){
app.io.use(middleware.authIO);
app.contoller.ps.subscribe(/./g, function(data, topic){
app.io.emit('P2PSub', { topic, data });
});
app.io.on('connection', (socket) => {
// console.log('socket', socket)
var user = socket.user;
socket.on('P2PSub', (msg) => {
app.contoller.ps.publish(msg.topic, {...msg.data, __from:socket.user});
// socket.broadcast.emit('P2PSub', msg);
});
});
});
// Gzip text responses (HTML/JS/CSS/JSON). The admin UI loads ~13 separate,
// uncompressed vendor JS/CSS files on every full page navigation (a
// traditional multi-page app, not an SPA) — this alone meaningfully cuts
// bytes-over-the-wire and perceived load time on a real network, where it
// matters far more than on localhost.
app.use(compression());
// load the JSON parser middleware. Express will parse JSON into native objects
// for any request that has JSON in its content type.
app.use(express.json());
// Set up the templating engine to build HTML for the front end.
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
// Per-host SSO endpoints. nginx routes /__proxy_auth/* on every proxied host to
// the app (see ops/nginx_conf/proxy.conf); these run the OIDC flow and set the
// per-host session cookie. Mounted before the page router.
app.use('/__proxy_auth', require('./routes/host_auth'));
// Routes for front end content.
app.use('/', require('./routes/render'));
// Routes for API
app.use('/api', require('./routes/api'));
// Catch 404 and forward to error handler. If none of the above routes are
// used, this is what will be called.
app.use(async function(req, res, next) {
try{
var err = new Error('Not Found');
err.message = 'Page not found'
err.status = 404;
next(err);
}catch(error){
console.log('app 404 catch error', error)
}
});
// Error handler. This is where `next()` will go on error
app.use(async function(err, req, res, next) {
try{
console.error(err.status || res.status, err.name, req.method, req.url);
console.error(err.message);
console.error(err.stack);
console.error('=========================================');
res.status(err.status || 500);
res.json({name: err.name, message: err.message, keys: err.keys});
}catch(error){
console.log('error in the catch all error fn....', error);
}
});