let socketOpen = false
let socketMsgQueue = []
wx.connectSocket({
  url: 'test.php'
})

wx.onSocketOpen(function(res) {
  socketOpen = true
  for (let i = 0; i < socketMsgQueue.length; i++){
    sendSocketMessage(socketMsgQueue[i])
  }
  socketMsgQueue = []
})

function sendSocketMessage(msg) {
  if (socketOpen) {
    wx.sendSocketMessage({
      data:msg
    })
  } else {
    socketMsgQueue.push(msg)
  }
}

wx.connectSocket({
  url: 'wss://example.qq.com',
  header:{
    'content-type': 'application/json'
  },
  protocols: ['protocol1']
})

wx.connectSocket({
  url: 'test.php'
})

//Please note that there may be timing issues here,
//If wx.connectSocket has not yet called back wx.onSocketOpen, and wx.closeSocket is called first, then the purpose of closing the WebSocket cannot be achieved.
//It is imperative to call wx.closeSocket during the WebSocket's open period to effectuate closure.
wx.onSocketOpen(function() {
  wx.closeSocket()
})

wx.onSocketClose(function(res) {
  console.log('WebSocket has been closed!')
})