@nestjs/platform-ws: Application shutdown hangs

[bettercalljason]

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Is there an existing issue for this?

• [X] I have searched the existing issues

Current behavior

The application shutdown hangs when shutdown hooks are enabled and there are existing (open) websocket connections.

Minimum reproduction code

https://stackblitz.com/edit/nestjs-typescript-starter-1jpeel?file=src%2Fmain.ts&view=editor

Steps to reproduce

1. In a first terminal, run npm install && npm start
2. In a second terminal, run node client.mjs to open a WebSocket connection
3. In the first terminal, stop the application (Ctrl+C)
4. In the first terminal, run npm install && npm start again -> You get an Error: listen EADDRINUSE: address already in use :::3000 because the application didn't terminate before.

Expected behavior

The application should have shutdown completely and starting it again should not be an issue.

Package

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

Other package

No response

NestJS version

10.3.2

Packages versions

[Nest CLI] Nest CLI Version : 10.3.2

[Nest Platform Information] platform-express version : 10.3.2 platform-ws version : 10.3.2 websockets version : 10.3.2 schematics version : 10.1.1 testing version : 10.3.2 common version : 10.3.2 core version : 10.3.2 cli version : 10.3.2

Node.js version

20.12.2

In which operating systems have you tested?

• [ ] macOS
• [ ] Windows
• [X] Linux

Other

No response