MaxListenersExceededWarning when sending parallel requests through ClientProxy

[notVitaliy]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

When sending more than 10 parallel requests through ClientProxy, a warning comes up in the console:

MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 message listeners added to [Socket]. Use emitter.setMaxListeners() to increase limit

Minimum reproduction code

https://github.com/notVitaliy/nestjs-error

Steps to reproduce

1. yarn
2. nest start app
3. nest start tasks

Expected behavior

For the warning to not be there.

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

8.4.0

Packages versions

[System Information]
OS Version : Linux 5.4
NodeJS Version : v16.13.2
YARN Version : 1.22.17

[Nest CLI]
Nest CLI Version : 8.2.2

[Nest Platform Information]
platform-express version : 8.4.0
microservices version : 8.4.0
schematics version : 8.0.7
schedule version : 1.0.2
testing version : 8.4.0
common version : 8.4.0
core version : 8.4.0
cli version : 8.2.2

Node.js version

16.13.2

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[kamilmysliwiec]

Let's track this here #9303