HarmonyOS Tcp socket问题

tcp: socket.TCPSocket = socket.constructTCPSocketInstance()
let hexStr = "aabb01"
const byteArray = new Array<number>()
for (let i = 0; i < hexStr.length; i += 2) {
  byteArray.push(parseInt(hexStr.substring(i, i + 2), 16))
}
let buffer = new Uint8Array(byteArray)
let tcpSendOptions: socket.TCPSendOptions = {
  data: buffer
}
tcp.send(tcpSendOptions, (err: BusinessError) => {
  if (err) {
    console.log('send fail');
    return;
  }
  console.log('send success');
})

如果data类型是字符串平台可以收到，日志打印send success，如果是ArrayBuffer平台收不到数据，日志回调上不打印send fail也不打印send success。是16进制字符串转arrybuffer处理的有问题，还是就只能发送string，如果能发送那如何进行转换。