HarmonyOS 鸿蒙Next websocket连接成功后过一会就error断开了

代码：
let wssUrl = ‘wss://’;

this.wss.on(‘open’, (err: BusinessError, value: Object) => {
console.log(“ccccccccccccwebsocket==on open, status:” + JSON.stringify(value));

emitter.emit({eventId:EmitterConstant.Emitter_websocketScuess})
// let innerEvent: emitter.InnerEvent = { eventId: EmitterConstant.Emitter_websocketScuess }
// // 选中态：黑变红
// let eventData: emitter.EventData = {
// data: {
// value
// }
// }
// emitter.emit(innerEvent, eventData)

this.headintervalID = setInterval(() => {
console.log(“websocket==111headerMessage sent successfully”);
this.wss.send(“1”, (err: BusinessError, value: boolean) => {
if (!err) {
  console.log(“websocket==headerMessage sent successfully”);
} else {
  console.log(“websocket==headerFailed to send the message. Err:” + JSON.stringify(err));
}
});
}, 20000);