[英]Why 'new WebSocket()' doesn't work for nestjs?
我正在發送const socket = new WebSocket('ws://localhost:3000'); socket.send('hello world');
const socket = new WebSocket('ws://localhost:3000'); socket.send('hello world');
來自客戶端,我在服務器上收到日志“已連接”日志,但沒有收到“hello world”。 socket.send() 不適用於 NestJS。 當我查看 chrome 網絡時。 它發送數據但未在服務器中接收。 這是代碼: chat.gateway.ts
@WebSocketGateway()
export class ChatGateway implements OnGatewayConnection, OnGatewayDisconnect, OnGatewayInit {
handleConnection(client: any, ...args: any[]): any {
console.log('connected');
}
handleDisconnect(client: any): any {
console.log(client);
console.log('disconnected');
}
@SubscribeMessage('message')
handleEvent(client: any, data: any): WsResponse<any> {
const event = 'events';
return { event, data };
}
afterInit(server: any): any {
console.log(server.path);
}
}
main.ts
import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { WsAdapter } from '@nestjs/platform-ws';
async function bootstrap() {
const app = await NestFactory.create(AppModule);
app.enableCors({
origin: 'http://localhost:4200',
credentials: true,
});
app.useWebSocketAdapter(new WsAdapter(app));
await app.listen(3000);
}
bootstrap();
查看 Github 示例: https://github.com/nestjs/nest/tree/master/sample/16-gateways-ws
在客戶端:
const socket = new WebSocket('ws://localhost:80');
socket.onopen = () => {
console.log('Connected');
socket.send(
JSON.stringify({
event: 'message',
data: 'my very important message',
}),
);
socket.onmessage = (data) => {
console.log(data);
};
};
這應該可以解決問題
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