Web socket not responding at controller layer NestJS - node.js

Question

I am fairly new to websockets, I am developing a NestJS api which would poll the database and update the frontend at realtime so for that I am trying to use Websockets.
I have many other routes that do not require a socket connection, so only to implement the socket connection in one route I followed this answer
So I setup my socket.module and socket.service like the following:
socket.module
import { Module, Global } from '#nestjs/common';
import { SocketService } from './socket.service';
#Global()
#Module({
controllers: [],
providers: [SocketService],
exports: [SocketService],
})
export class SocketModule {}
socket.service
import { Injectable } from '#nestjs/common';
import { Server } from 'socket.io';
#Injectable()
export class SocketService {
public socket: Server = null;
}
Set up app.gateway.ts and added it as a provider to my app.module,also imported the Socketmodule into app.module.
app.gateway.ts
import {
WebSocketGateway,
OnGatewayInit,
OnGatewayConnection,
OnGatewayDisconnect,
WebSocketServer,
SubscribeMessage,
} from '#nestjs/websockets';
import { Logger } from '#nestjs/common';
import { Server, Socket } from 'socket.io';
import { SocketService } from './socket/socket.service';
#WebSocketGateway()
export class AppGateway
implements OnGatewayInit, OnGatewayConnection, OnGatewayDisconnect
{
constructor(private socketService: SocketService) {}
#WebSocketServer() public server: Server;
private logger: Logger = new Logger('AppGateway');
#SubscribeMessage('msgToServer')
handleMessage(client: Socket, payload: string): void {
this.server.emit('msgToClient', payload);
}
afterInit(server: Server) {
this.socketService.socket = server;
}
handleDisconnect(client: Socket) {
this.logger.log(`Client disconnected: ${client.id}`);
}
handleConnection(client: Socket, ...args: any[]) {
this.logger.log(`Client connected: ${client.id}`);
}
}
app.module.ts
import { Module } from '#nestjs/common';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { TypeOrmModule } from '#nestjs/typeorm';
import { ConfigModule } from '#nestjs/config';
import { AuthModule } from './auth/auth.module';
import { UserModule } from './user/user.module';
import { HomeModule } from './home/home.module';
import { SocketModule } from './socket/socket.module';
import { AppGateway } from './app.gateway';
#Module({
imports: [
ConfigModule.forRoot({ isGlobal: true }),
TypeOrmModule.forRoot({
type: 'mysql',
host: 'localhost',
port: 3306,
username: process.env.DB_USER,
password: process.env.DB_PASSWORD,
database: process.env.DB_NAME,
entities: ['dist/**/*.entity{.ts,.js}'],
synchronize: true,
}),
AuthModule,
UserModule,
HomeModule,
SocketModule,
],
controllers: [AppController],
providers: [AppService, AppGateway],
})
export class AppModule {}
Now in my home module, I injected the Socket.service as a dependency, with postman I can also establish a connection at localhost:3000 but it does not make any response. I have added an event listener at postman name msgToServer and sent messages, but neither a response nor any console.log shows up.
home.controller.ts
import { Controller, Get, UseGuards } from '#nestjs/common';
import { AuthGuard } from '#nestjs/passport';
import { SocketService } from 'src/socket/socket.service';
#Controller('/home')
#UseGuards(AuthGuard())
export class HomeController {
// eslint-disable-next-line #typescript-eslint/no-empty-function
constructor(private readonly socketService: SocketService) {}
#Get()
getHello(client): boolean {
console.group('HomeController');
return this.socketService.socket.emit('msgToServer', 'Hello World');
}
}
What am I doing wrong here?If not a concise answer but pointing me to the right direction would also be helpful.