hbdm and ok contract simultaneously with websocket, huobi sends out pong without response

The code is like this, huobi will receive the server's ping after about five or six seconds, and then I'll send out a pong, but it's like the server can't receive a pong, and it keeps sending me a ping, and God says to read plus 1, but plus or minus.

function main() {
    var ws_hbdm = Dial("wss://www.hbdm.com/ws?compress=true|compress=gzip&mode=recv")
    var ws_ok= Dial("wss://real.okex.com:10440/ws/v1?compress=true|compress=gzip_raw&mode=recv")
    var pingCyc = 1000 * 120
    var lastPingTime = new Date().getTime()
    if(ws_hbdm && ws_ok){
        ws_hbdm.write('{"sub": "market.EOS_CW.depth.step6","id": "id2"}')
        ws_ok.write("{'event':'addChannel','channel':'ok_sub_futureusd_eos_depth_this_week_5'}")
        while(1){
            //读取huobi数据
            var ret = ws_hbdm.read(-1)
            if(ret){
                var ret1=JSON.parse(ret)
                if("tick" in ret1){
                    Log("huobi",ret1.tick) 
                }else if("ping" in ret1){
                    ws_hbdm.write('{"pong":'+parseInt(ret1.ping)+'}')
                    Log("pong")
                }    
            }
            //读取ok数据
            var nowTime = new Date().getTime()
            var ret2 = ws_ok.read(-1)
            if(ret2){
                if(nowTime - lastPingTime > pingCyc){
                    ws_ok.write("{'event':'ping'}")
                    lastPingTime = nowTime
                }
                var ret3=JSON.parse(ret2)
                if(ret3.length>0){
                    if("data" in ret3[0]){
                        Log("ok",ret3[0].data)
                    }
                }
            }
        }
        //ws_hbdm.close() 
    }
}

The logs are as follows: 2019-03-21 00:30:25 info ok {asks:[[3.687,18]]. 2019-03-21 00:30:24 information ok {asks: [[3.687,1684]]. === The following is a list of articles related to the current president of the United States. === The current president of the United States. === The current president of the United States. === The current president of the United States. === The current president of the United States. === The current president of the United States. 2019-03-21 00:30:24 information pong and other news 2019-03-21 00:30:23 information ok {asks you: [[3.687,1684]]. 2019-03-21 00:30:23 information ok {asks you: [[3.687,1711,4640]].

The Coin APIhttps://github.com/huobiapi/API_Docs/wiki/WS_request