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chat-with-gpt
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add rate limiting

main
Cogent Apps 2023-03-17 18:16:55 +00:00
parent bf9ab7d97e
commit d90509c12d
2 changed files with 13 additions and 3 deletions
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2
server/package.json
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@ -15,6 +15,7 @@
"@types/debug": "^4.1.7",
"@types/email-validator": "^1.0.6",
"@types/express": "^4.17.17",
"@types/express-rate-limit": "^6.0.0",
"@types/express-session": "^1.17.6",
"@types/node": "^18.14.4",
"@types/passport": "^1.0.12",
@ -32,6 +33,7 @@
"expiry-set": "^1.0.0",
"express": "^4.18.2",
"express-openid-connect": "^2.12.1",
"express-rate-limit": "^6.7.0",
"express-session": "^1.17.3",
"idb-keyval": "^6.2.0",
"jsonwebtoken": "^9.0.0",

14
server/src/index.ts
View File

@ -46,7 +46,9 @@ export default class ChatServer {
constructor() {
this.app = express();
}
async initialize() {
this.app.use(express.urlencoded({ extended: false }));
if (process.env.AUTH0_CLIENT_ID && process.env.AUTH0_ISSUER && process.env.PUBLIC_URL) {
@ -71,6 +73,14 @@ export default class ChatServer {
next();
});
const { default: rateLimit } = await import('express-rate-limit'); // esm
const limiter = rateLimit({
windowMs: 15 * 60 * 1000, // 15 minutes
max: 100, // limit each IP to 100 requests per windowMs
});
this.app.use(limiter);
this.app.get('/chatapi/health', (req, res) => new HealthRequestHandler(this, req, res));
this.app.get('/chatapi/session', (req, res) => new SessionRequestHandler(this, req, res));
this.app.post('/chatapi/messages', (req, res) => new MessagesRequestHandler(this, req, res));
@ -92,9 +102,7 @@ export default class ChatServer {
res.sendFile('public/index.html', { root: path.resolve(__dirname, '..') });
});
}
}
async initialize() {
await this.objectStore.initialize();
await this.database.initialize();