WebSocket connection to 'wss://weilis.xyz/' failed: Error during WebSocket handshake: Unexpected response code: 502

```

/**

* 生命周期函数--监听页面加载

*/

onLoad: function (options) {

wx.connectSocket({

url: "wss://weilis.xyz"

});

wx.onSocketError(function(err) {

console.log(err);

})

wx.onSocketMessage(function (res) {

console.log('收到服务器内容：' + res)

});

wx.onSocketClose(function (res) {

console.log(res)

});

},

```

证书配置正确，在https://weilis.xyz首页上打开浏览器调试工具在console中输入

```

var s = io("wss://weilis.xyz")

s.connected

true