HarmonyOS rcp怎么支持文件分块上传uploadFromStream和fs.createReadStream创建的类型不匹配

rcp库能力当前使用request能力可通过transferRange方式截取或执行分片上传场景，官网文档可参考：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/remote-communication-rcp-V5#section10768169134510

示例：

import { hilog } from '@kit.PerformanceAnalysisKit';
import { rcp } from '@kit.RemoteCommunicationKit';
import { BusinessError } from '@kit.BasicServicesKit';

const TAG: string = 'testTag'


function uploadFileByRequest(url: string, start: number, end: number, filePath: string) {
  //响应数据处理
  const customHttpEventsHandler: rcp.HttpEventsHandler = {
    //上传数据监听
    onUploadProgress: (totalSize: number, transferredSize: number) => {
      hilog.info(0x0000, TAG, "Download progress:", transferredSize, "of", totalSize);
    },
    //数据传输完成监听
    onDataEnd: () => {
      hilog.info(0x0000, TAG, "Data transfer complete");
    },
    //取消监听
    onCanceled: () => {
      hilog.info(0x0000, TAG, "Request/response canceled");
    },
  };
  //TracingConfiguration用于获取请求期间详细信息
  const tracingConfig: rcp.TracingConfiguration = {
    verbose: true,
    collectTimeInfo: true,
    httpEventsHandler: customHttpEventsHandler,
  };

  const securityConfig: rcp.SecurityConfiguration = {
    remoteValidation: "skip",
    certificate: {
      content: "-----BEGIN CERTIFICATE-----\n...",
      type: "PEM",
      key: "-----BEGIN PRIVATE KEY-----\n...", //请根据自身业务选择合适的key
      keyPassword: "your-password",
    },
    serverAuthentication: {
      credential: {
        username: "exampleUser",
        password: "examplePassword",
      },
      authenticationType: "basic",
    },
  };

  //建立session对象
  let session = rcp.createSession({
    //指定与会话关联的HTTP请求的配置
    requestConfiguration: {
      tracing: tracingConfig,
      security: securityConfig
    }
  });
  let customHeader: rcp.RequestHeaders = { cookie: "string" }
  let customContent: rcp.RequestContent = { fileOrPath: filePath }
  let request = new rcp.Request(url, 'POST', customHeader, customContent);
  request.transferRange = { from: start, to: end };
  //发起请求
  session.fetch(request).then(
    (rep: rcp.Response) => {
      hilog.info(0x00000, TAG, '{}内容为%{public}s', '上传情况');
    }
  ).catch((err: BusinessError) => {
    hilog.error(0x0000, TAG, `Response err: Code is ${err.code}, message is ${err.message}`);
  }
  );
}
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