网络信息-UDPSocket连接 报错 "code":2301022,"

{"code":2301022,"message":"Invalid argument"} ,

import buffer from '@ohos.buffer'; 
import socket from '@ohos.net.socket'; 
import { BusinessError } from '@ohos.base'; 
... ... 
test() { 

  let udp: socket.UDPSocket = socket.constructUDPSocketInstance(); 

  let bindAddr: socket.NetAddress = { 
    address: '127.0.0.1', 
  } 

  let sendOptions: socket.UDPSendOptions = { 
    data: 'Hello!', 
    address: { 
      address: '8.xxx.10.183', 
      port: 52826 
    } 
  } 

  udp.bind(bindAddr).then(() => { 
    console.log(' bind success'); 

    udp.send(sendOptions).then(() => { 

      console.log(' send success'); 

    }).catch((err: BusinessError) => { 

      console.log(' send fail' + JSON.stringify(err)); 

    }); 

  }).catch((err: BusinessError) => { 
    console.log(' bind fail' + JSON.stringify(err)); 
  }); 

}