I have a frontend application(VUE JS)
I have a backend (Nest JS)
Vue JS app get data from backend via websockets using vue-socket.io-extended library When Vue JS app starts I see errors in browser:
polling-xhr.js?d33e:229 POST http://localhost:11050/socket.io/?EIO=4&transport=polling&t=NMXgCF1 400 (Bad Request)
How can I fix this error?
I think it is not connected with library, I tried just socket io library and the result was the same.
Server is working, because it sends logs and show who is connected:
Server(Nest JS) main.ts file:
async function bootstrap() {
const app = await NestFactory.create(AppModule);
app.enableCors();
await app.listen(11050);
}
bootstrap();
App.gateway:
@WebSocketGateway()
export class AppGateway implements OnGatewayInit, OnGatewayConnection, OnGatewayDisconnect {
private logger: Logger = new Logger('AppGatway');
@SubscribeMessage('msgToServer')
handleMessage(client: Socket, text: string): WsResponse<string> {
return { event: 'msgToClient', data: text };
}
afterInit(server: Server) {
this.logger.log('Initialised!');
}
handleConnection(client: Socket, ...args: any[]): any {
this.logger.log(`Client connected: ${client.id}`);
}
handleDisconnect(client: Socket): any {
this.logger.log(`Client disconnected: ${client.id}`);
}
}
Frontend(Vue JS):
import VueSocketIOExt from "vue-socket.io-extended";
import Vue from "vue";
import io from "socket.io-client";
const socket = io("http://localhost:11050/");
Vue.use(VueSocketIOExt, socket);
data: () => ({
socket: null,
connection: null,
sockets: {
connect() {
console.log("socket connected");
},
},
}