POST request is hanged when using Fastify adapter

[truongtrongtin]

Is there an existing issue for this?

• [X] I have searched the existing issues

Current behavior

Fastify adapter: POST request is hanged, GET request works fine

let nestApp: NestFastifyApplication;

async function bootstrap() {
  const app = await NestFactory.create<NestFastifyApplication>(
    AppModule,
    new FastifyAdapter(),
  );
  return app.init();
}

export async function api(req: Request, res: Response) {
  nestApp = nestApp ?? (await bootstrap());
  const instance = nestApp.getHttpAdapter().getInstance();
  await instance.ready();
  instance.server.emit('request', req, res);
}

Express adapter works fine

let nestApp: NestExpressApplication;

async function bootstrap() {
  const app = await NestFactory.create<NestExpressApplication>(
    AppModule,
    new ExpressAdapter(),
  );
  return app.init();
}

export async function api(req: Request, res: Response) {
  nestApp = nestApp ?? (await bootstrap());
  const instance = nestApp.getHttpAdapter().getInstance();
  instance(req, res);
}

Minimum reproduction code

https://github.com/truongtrongtin/nestjs-function/blob/main/src/main.ts

Steps to reproduce

pnpm install
pnpm run start:dev
curl -X POST http://localhost:8080 -d "name=john"

Expected behavior

Should works

Package

• [ ] I don't know. Or some 3rd-party package
• [ ] code>@nestjs/common</code
• [ ] code>@nestjs/core</code
• [ ] code>@nestjs/microservices</code
• [ ] code>@nestjs/platform-express</code
• [X] code>@nestjs/platform-fastify</code
• [ ] code>@nestjs/platform-socket.io</code
• [ ] code>@nestjs/platform-ws</code
• [ ] code>@nestjs/testing</code
• [ ] code>@nestjs/websockets</code
• [ ] Other (see below)

Other package

No response

NestJS version

No response

Packages versions

  "dependencies": {
    "@google-cloud/functions-framework": "^3.3.0",
    "@nestjs/common": "^10.2.10",
    "@nestjs/core": "^10.2.10",
    "@nestjs/platform-express": "^10.2.10",
    "@nestjs/platform-fastify": "^10.2.10",
    "class-validator": "^0.14.0",
    "reflect-metadata": "^0.1.13",
    "rxjs": "^7.8.1"
  },
  "devDependencies": {
    "@nestjs/cli": "^10.2.1",
    "@nestjs/schematics": "^10.0.3",
    "@nestjs/testing": "^10.2.10",
    "@types/express": "^4.17.21",
    "@types/jest": "^29.5.10",
    "@types/node": "^20.10.1",
    "@types/supertest": "^2.0.16",
    "@typescript-eslint/eslint-plugin": "^6.13.1",
    "@typescript-eslint/parser": "^6.13.1",
    "env-cmd": "^10.1.0",
    "eslint": "^8.54.0",
    "eslint-config-prettier": "^9.0.0",
    "eslint-plugin-prettier": "^5.0.1",
    "jest": "^29.7.0",
    "prettier": "^3.1.0",
    "source-map-support": "^0.5.21",
    "supertest": "^6.3.3",
    "ts-jest": "^29.1.1",
    "ts-loader": "^9.5.1",
    "ts-node": "^10.9.1",
    "tsc-watch": "^6.0.4",
    "tsconfig-paths": "^4.2.0",
    "typescript": "^5.3.2"
  },

Node.js version

20.10.0

In which operating systems have you tested?

• [X] macOS
• [ ] Windows
• [ ] Linux

Other

No response

[kamilmysliwiec]

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