Doc: Gateways | NestJS
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$ npm run start:dev
$ npm i --save @nestjs/websockets @nestjs/platform-socket.io
$ nest new websocket-gateway
↑ [recv]: listen on 'Major Tom' in [Events]
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↑ [send]: send to 'Ground Control' (pattern to be fulfilled)
↑ [send]: fill in [Message]
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↑ Connect ➜ http://localhost:10086
↑ Postman ➜ New ➜ Socket.IO request
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*** Test: sending request on Postman ***
- Postman: ✅
- Insomnia: No Socket IO support