webSocket

v0.12+

Summary

WebSockets 是一种先进的技术, 这使得在用户的 H5/iOS/Android 和一个服务器之间打开一个的交互式通信会话成为可能, 有了这个 API，你可以向服务器发送消息, 并接收事件驱动的响应, 无需轮询服务器的响应

注意：

• iOS和h5提供 WebSockets 的 protocol 默认实现，安卓使用需要提供自定义 adapter 实现，source:
  • DefaultWebSocketAdapter.java;
  • DefaultWebSocketAdapterFactory.java;
  • 集成例子参考weex playground

API

WebSocket(url, protocol)

创建 WebSockets，并连接服务器

Arguments

• url {string}: 表示要连接的 URL;
• protocol {string}: WebSockets 协议

send(data)

通过WebSocket连接向服务器发送数据

Arguments

• data{string}:要发送到服务器的数据

close(code,reason)

关闭 WebSockets 的链接

Arguments

• code {number}: 关闭连接的状态号.
• reason {string}: 关闭的原因

onopen(options)

链接打开的监听

Arguments

• options {object}: 一个空的对象

onmessage(options)

消息事件的监听器

Arguments

• options {object}: 服务器返回的消息对象
  • data {string}: 监听器接收的到的消息

onclose(options)

关闭事件的监听器

Arguments

• options {object}: 监听器接收到的对象
  • code {number}: 服务器返回关闭的状态码
  • reason {string}: 服务器返回的关闭原因
  • wasClean {boolen}: 是否完全关闭.

onerror(options)

错误事件的监听器

Arguments

• options {object}: 错误信息的事件
  • data {string}: 监听器接收到的信息

Example

<template>
  <scroller>
    <div>
      <div style="background-color: #286090">
        <text class="title" style="height: 80px ;padding: 20px;color: white">websocket</text>
      </div>
      <input type="text" placeholder="please input message to send" class="input" autofocus="false" value="" @change="onchange" @input="oninput" ref="input"/>
      <div style="flex-direction: row; justify-content: center;">
        <text class="button" @click="connect">connect</text>
        <text class="button" @click="send">send</text>
        <text class="button" @click="close">close</text>
      </div>
      <div style="background-color: lightgray">
        <text class="title" style="height: 80px ;padding: 20px;color: black">method = send</text>
      </div>
      <text style="color: black;height: 80px">{{sendinfo}}</text>
      <div style="background-color: lightgray">
        <text class="title" style="height: 80px ;padding: 20px;color: black">method = onopen</text>
      </div>
      <text style="color: black;height: 80px">{{onopeninfo}}</text>
      <div style="background-color: lightgray">
        <text class="title" style="height: 80px ;padding: 20px;color: black">method = onmessage</text>
      </div>
      <text style="color: black;height: 400px">{{onmessage}}</text>
      <div style="background-color: lightgray">
        <text class="title" style="height: 80px ;padding: 20px;color: black">method = onclose</text>
      </div>
      <text style="color: black;height: 80px">{{oncloseinfo}}</text>
      <div style="background-color: lightgray">
        <text class="title" style="height: 80px ;padding: 20px;color: black">method = onerror</text>
      </div>
      <text style="color: black;height: 80px">{{onerrorinfo}}</text>
      <div style="background-color: lightgray">
        <text class="title" style="height: 80px ;padding: 20px;color: black">method = close</text>
      </div>
      <text style="color: black;height: 80px">{{closeinfo}}</text>
    </div>
  </scroller>
</template>
<style scoped>
  .input {
    font-size: 40px;
    height: 80px;
    width: 600px;
  }
  .button {
    font-size: 36px;
    width: 150px;
    color: #41B883;
    text-align: center;
    padding-top: 25px;
    padding-bottom: 25px;
    border-width: 2px;
    border-style: solid;
    margin-right: 20px;
    border-color: rgb(162, 217, 192);
    background-color: rgba(162, 217, 192, 0.2);
  }
</style>
<script>
  var websocket = weex.requireModule('webSocket')
  export default {
    data () {
      return {
        connectinfo: '',
        sendinfo: '',
        onopeninfo: '',
        onmessage: '',
        oncloseinfo: '',
        onerrorinfo: '',
        closeinfo: '',
        txtInput:'',
        navBarHeight: 88,
        title: 'Navigator',
        dir: 'examples',
        baseURL: ''
      }
    },
    methods: {
      connect:function() {
        websocket.WebSocket('ws://echo.websocket.org','');
        var self = this;
        self.onopeninfo = 'connecting...'
        websocket.onopen = function(e)
        {
          self.onopeninfo = 'websocket open';
        }
        websocket.onmessage = function(e)
        {
          self.onmessage = e.data;
        }
        websocket.onerror = function(e)
        {
          self.onerrorinfo = e.data;
        }
        websocket.onclose = function(e)
        {
          self.onopeninfo = '';
          self.onerrorinfo = e.code;
        }
      },
      send:function(e) {
        var input = this.$refs.input;
        input.blur();
        websocket.send(this.txtInput);
        this.sendinfo = this.txtInput;
      },
      oninput: function(event) {
        this.txtInput = event.value;
      },
      close:function(e) {
        websocket.close();
      },
    },
  }
</script>

Have a try