如何在angular 4中使用socket.io-client [英] How to use socket.io-client in angular 4

问题描述

服务器端是php laravel echo websocket，我正在尝试通过Angular 4进行连接。我尝试使用ng2-socket-io - npm和laravel-echo - npm，但没有一个成功。如果有人知道任何文档或教程如何使用它，请帮助

Server side is php laravel echo websocket and I am trying to connect by Angular 4. I tried using ng2-socket-io - npm and also laravel-echo - npm but none of them were successfully. If anyone know any documentation or tutorial how I can use it, please help

推荐答案

您好@giga工作示例如下。

Hi @giga Working example is given below.

设置

npm i socket.io-client --save
npm i @types/socket.io-client --save

服务器端（nodejs）

var express = require('express');
var path = require('path');
var app = express();
var server = require('http').Server(app);
var io = require('socket.io')(server);

var port = 8000;

app.use(express.static(path.join(__dirname, "public")));

io.on('connection', (socket) => {
console.log('new connection made');

socket.on('event1', (data) => {
  console.log(data.msg);
});

socket.emit('event2', {
  msg: 'Server to client, do you read me? Over.'
});

socket.on('event3', (data) => {
  console.log(data.msg);
  socket.emit('event4', {
    msg: 'Loud and clear :)'
  });
});
});

server.listen(port, () => {
  console.log("Listening on port " + port);
});

客户端 - Angular4代码

import { Component, OnInit } from '@angular/core';
import * as io from 'socket.io-client';

@Component({
    moduleId: module.id,
    selector: 'ch-home',
    styleUrls: ['home.styles.css'],
    templateUrl: 'home.template.html'
})

export class HomeComponent implements OnInit {
    messageText: string;
    messages: Array<any>;
    socket: SocketIOClient.Socket;

  constructor() {
   // this.socket = io.connect('http://localhost:8000');
   this.socket = io.connect();
  }

  ngOnInit() {
        this.messages = new Array();

        this.socket.on('message-received', (msg: any) => {
            this.messages.push(msg);
            console.log(msg);
            console.log(this.messages);
        });
      this.socket.emit('event1', {
          msg: 'Client to server, can you hear me server?'
      });
      this.socket.on('event2', (data: any) => {
        console.log(data.msg);
        this.socket.emit('event3', {
            msg: 'Yes, its working for me!!'
        });
      });
      this.socket.on('event4', (data: any) => {
          console.log(data.msg);
      });
   }

   sendMessage() {
    const message = {
      text: this.messageText
    };
    this.socket.emit('send-message', message);
    // console.log(message.text);
    this.messageText = '';
  }

}

这篇关于如何在angular 4中使用socket.io-client的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！