http长连接的实现方式

import { http } from '@kit.NetworkKit';
import { BusinessError } from '@kit.BasicServicesKit';

let httpRequest = http.createHttp();
httpRequest.requestInStream("EXAMPLE_URL", (err: BusinessError, data: number) => {
  if (!err) {
    console.info("requestInStream OK! ResponseCode is " + JSON.stringify(data));
  } else {
    console.error("requestInStream ERROR : err = " + JSON.stringify(err));
  }
})