? ????? WeChat ??? WebSocket ???? ??? ?? ?? ???? ?? ???? ??? ????? ??? ? ??? ?????.

WebSocket??(??? ??)
WeChat? WebSocket ?????? ????? HTML5? WebSocket? ???? ??? Socket?? ?????. in B/S ????? ????, ????? ?? ?? ??? ??? ?????.
?? ?????? ??? WebSocket? ?? ???? ????? ?? ?? ?? ???? ?? ???? ???????. WebSocket? ?? ? ?? ??? ??? ?????.

WebSocket ????

WebSocket? Ajax? ??

WebSocket? ??? ? ?? ???? ???? ?? ?????, Ajax? ??? ?? ??? ???? ???, ??? ??? ?? ?? ?? ???? ?? ?? HTTP ??? ???? ????. ?? ?? HTTP ??? ???? ???? ???? ?? ??? ???? ???? ?????. ??? ?? ??? ?????? ???? ?? ??? ???(?????) ?? ???? ?????.
WebSocket? ?? ?? ??? ??? ? ????. WebSocket? ?????? ?? ??? ??? ????, ??? ? ?? ????, ??? ???? ??? ???? ????? ?? ? ???? ????? ??? ? ????. ?????? WebSocket? ??? ? WebSocket? ?? ?? ?????.

WebSocket ???? ??

WebSocket ??? http ?? https? ???? ?? ws ? wss? ?????. ??? ??? ?? ??? ????.
?: ?? ?? ??? ??

???? ?? ??? ????? ?? ?? ?????. ?? ???? wxchart? ?????.

wxchart ???? ??:

?????? ???????. ????? ???????.
?? ??? ??:

wxchart.js? ???/stock/? ????.
stock.wxml ??:

stock.js ??:

// pages/stock/stock.js
//加載插件
var wxCharts = require('wxcharts.js');

Page({
  data: {},

  onLoad: function (options) {

    //建立連接
    wx.connectSocket({
      url: "ws://localhost:12345",
    })

    //連接成功
    wx.onSocketOpen(function() {
      wx.sendSocketMessage({
        data: 'stock',
      })
    })

    //接收數(shù)據(jù)
    wx.onSocketMessage(function(data) {
      var objData = JSON.parse(data.data);
      console.log(data);
        new wxCharts({
          canvasId: 'lineCanvas',//指定canvas的id
          animation: false,
          type: 'line',//類型是線形圖
          categories: ['2012', '2013', '2014', '2015', '2016', '2017'],

          series: [{
            name: '交易量',
            data: objData,//websocket接收到的數(shù)據(jù)
            format: function (val) {
              if (typeof val == "string") {
                val = parseFloat(val);
              }
              return val.toFixed(2) + '萬(wàn)元';
            }
          },
          ],
          yAxis: {
            title: '交易金額 (萬(wàn)元)',
            format: function (val) {
              return val.toFixed(2);
            },
            min: 0
          },
          width: 320,
          height: 200
        });      
    })

    //連接失敗
    wx.onSocketError(function() {
      console.log('websocket連接失?。?amp;#39;);
    })
  },
})

??? WebSocket? ??? ws://localhost???. ??? 12345???. ??? ??? ? ??? ??? ???? ??? ?? ????? ??? ??? ?????.
WebSocket? ???? PHP? ??????. ????? ??? ??????.

<?php
include &#39;WebSocket.php&#39;;

class WebSocket2 extends WebSocket{
    public function run(){
          while(true){
          $socketArr = $this->sockets;
          $write = NULL;
          $except = NULL;
          socket_select($socketArr, $write, $except, NULL);
          foreach ($socketArr as $socket){
            if ($socket == $this->master){
              $client = socket_accept($this->master);
              if ($client < 0){
                $this->log("socket_accept() failed");
                continue;
              }else{
                $this->connect($client);
              }
            }
            else{
              $this->log("----------New Frame Start-------");
              $bytes = @socket_recv($socket,$buffer,2048,0);
              if ($bytes == 0){
                $this->disconnect($socket);
              }else{
                $user = $this->getUserBySocket($socket);
                if (!$user->handshake){
                  $this->doHandShake($user, $buffer);
                }else{
                    $buffer = $this->unwrap($user->socket, $buffer);

                    //請(qǐng)求為stock時(shí)，向通道內(nèi)推送數(shù)據(jù)
                    if ($buffer == &#39;stock&#39;) {
                        $arr = array();

                        //模擬數(shù)據(jù)
                        for ($i=0; $i < 6; $i++) { 
                            $arr[] = rand(1, 100) / 100;
                        }

                        $this->send($user->socket, json_encode($arr));
                    }
                }
              }
            }
          }
        }
    }
}

$s = new WebSocket2(&#39;localhost&#39;, 12345);
$s -> run();

PHP?? WebSocket? ???? ?? ?? ??????. Node.js? ?? ??? Node?? ??? ? ????. .js. Node.js? ??? WebSocket? ???? ? ?? ?????.

?? ?:

WeChat WebSocketAPI ???? ??

wx.connectSocket(OBJECT)

[tr] ???? ?? ?? ??[/tr]

wx.onSocketOpen(CALLBACK)

WebSocket ?? ?? ???? ?????.
wx.onSocketError(CALLBACK)

WebSocket ??? ?????.
wx.sendSocketMessage(OBJECT)

WebSocket ??? ?? ???? ????? ?? wx.connectSocket? ??? ?? wx.onSocketOpen ?? ?? ???? ???.
[tr] ???? ?? ?? ??[/tr]

wx.onSocketMessage(CALLBACK)

WebSocket?? ??? ??? ??? ?? ????.
[tr] ???? ?? ??[/tr]

wx.closeSocket()
WebSocket ??? ????.
wx.onSocketClose(CALLBACK)
WebSocket ??? ?????.
localhost? ???
? ????? localhost? ?? ??? ??????. ?? ?? ??????? ???? ?? ?????. ?? ??.

? ??? WeChat Mini ???? WebSocket ???? ?? ? ?? ? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!