@ohos.net.webSocket send ArrayBuffer格式数据需要设置什么参数支持吗？

Class:TA{ 
  A1:string; 
  B1:int; 
  C1:{"key1":"FF","key2":"GG"} 
}

strToArrayBuffer(str: string) { 
  let buf = new ArrayBuffer(str.length * 2); 
  let bufView = new Uint16Array(buf); 
  for (let i = 0, strLen = str.length; i < strLen; i++) { 
    bufView[i] = str.charCodeAt(i); 
  } 
  return buf; 
}

let objData = new testObj("123.45.6.78","8086",new message("str","send data")); 
console.info(`string : ${JSON.stringify(objData)}`) 
let buf1 = this.strToArrayBuffer(JSON.stringify(objData));