sample.gateway.ts

import { OnApplicationBootstrap, UseGuards } from '@nestjs/common';
import {
  SubscribeMessage,
  WebSocketGateway,
  WebSocketServer,
} from '@nestjs/websockets';
import { Server } from 'ws';

import { JwtWsAuthGuard } from '../auth/jwt-auth-ws.guard';

@UseGuards(JwtWsAuthGuard)
@WebSocketGateway({ path: '/v1' })
export class SampleGateway implements OnApplicationBootstrap {
  @WebSocketServer()
  server: Server;

  onApplicationBootstrap() {
    this.server.on('connection', (ws, request) => {
      (ws as any).request = request;
    });
  }

  @SubscribeMessage('message')
  handleMessage(client: any, payload: any): string {
    console.log('got mesg: ' + JSON.stringify(payload));
    return 'Hello world!';
  }
}