HarmonyOS 客户端TCPSocket连接成功后，怎么取得这个连接的本地IP地址

getLocalIp() { 
  const ipInfo = wifiManager.getIpInfo() // 添加权限 ohos.permission.GET_WIFI_INFO 
  const localIp = this.int2ip(ipInfo.ipAddress) 
  console.log('test: ipInfo : ' + JSON.stringify(ipInfo)); 
  console.log('test: localHost : ' + localIp); 
  return localIp; 
} 
int2ip(n: number) { 
  return `${(n & 0xFF000000) >>> 24}.${(n & 0x00FF0000) >>> 16}.${(n & 0x0000FF00) >>> 8}.${(n & 0xFF)}` 
}