HarmonyOS 鸿蒙Next 使用Socket通信报错

HarmonyOS 鸿蒙Next 使用Socket通信报错

这是日志，网上也找了但是没弄懂是哪里出了问题

import socket from '@ohos.net.socket';
@Entry
@Component
struct WifiSocket {
    build() {
        Row() {
            Column() {
                Text('启动服务端')
                    .fontSize(30)
                    .backgroundColor(Color.Red)
                    .width('80%')
                    .height(80)
                    .fontWeight(FontWeight.Bold)
                    .onClick(() => {
                        let udp = socket.constructUDPSocketInstance();
                        udp.bind({ address: 'localhost', port: 9999 }, err => {
                            if (err) {
                                console.log('server bind fail：' + JSON.stringify(err));
                            }
                            console.log('server bind success');
                        });
                        udp.on("message", value => {
                            console.log("server message:" + value.message + ", remoteInfo:" + JSON.stringify(value.remoteInfo));
                        })
                    })

            }
        }
    }
}

SDK版本是SDK9