@nestjs/platform-ws: Application shutdown hangs

[bettercalljason]

Is there an existing issue for this?

• 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
• @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
• Linux

Other

No response

[kamilmysliwiec]

Let's track this here #13531