Javascript Fetch blob error-net:：ERR\u内容\u长度\u不匹配200（正常）

我有以下代码可以在我的node js express web app（通过MS Azure托管）中从前端发出获取请求。 对于较小的zip文件blob，该请求可以正常工作，但对于较大的blob，它最终会超时并给出以下错误-net:：ERR_CONTENT_LENGTH_MISMATCH 200（OK）

这是node.js express文件夹中的我的app.js

//'use strict';
var debug = require('debug');
var express = require('express');
var Path = require('path');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var csrf = require('csurf');
var bodyParser = require('body-parser');
var http = require("https");
var favicon = require('serve-favicon');
const resolve = require("path").resolve;
var JsZip = require('jszip');
var fs = require('fs-extra');
const uuid = require("uuid");
var request = require('request');
var https = require('https');

const axios = require("axios");

const path = require("path");
const fsExtra = require("fs-extra");
var Scraper = require("image-scraper");

//ENVIRONMENT SETUP
const currentEnv = 'PROD'; //Either 'PROD' OR 'DEV'
const cloudinaryFolder = 'inspectAPP'; //Either 'inspectAPP' OR 'inspectAPP-dev'

// setup route middlewares
var csrfProtection = csrf({ cookie: true })

var app = express();

//Set up helmet
var helmet = require('helmet');
app.use(
  helmet.contentSecurityPolicy({
    directives: {
      defaultSrc: ["'self'"],
      scriptSrc: ["'self'", "'unsafe-inline'", "cdnjs.cloudflare.com", "ajax.googleapis.com", "maxcdn.bootstrapcdn.com", "cdn.jsdelivr.net", "stackpath.bootstrapcdn.com"],
      styleSrc: ["'self'", "'unsafe-inline'", "stackpath.bootstrapcdn.com", "fonts.googleapis.com", "cdnjs.cloudflare.com", "maxcdn.bootstrapcdn.com", "use.fontawesome.com"],
      imgSrc: ["*", "'self'", "cdnjs.cloudflare.com"],
      fontSrc: ["*", "'self'", "fonts.gstatic.com"],
      frameSrc:["'self'","jimmywarting.github.io"],
      objectSrc: ["'none'"],
      connectSrc: ["'self'", "res.cloudinary.com", "cloudinary.com"],
      upgradeInsecureRequests: [],
    },
  })
);
app.disable('x-powered-by');


// view engine setup 
// view engine setup
app.set('views', Path.join(__dirname, 'views'));
app.set('view engine', 'pug');


app.use(favicon(__dirname + '/public/images/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.urlencoded({
    extended: false
}));
app.use(bodyParser.json());
// parse some custom thing into a Buffer
var rawOptions = {
  inflate: true,
  limit: '100mb',
  type: 'application/octet-stream'
};

app.use(bodyParser.raw(rawOptions));

app.use(cookieParser());
app.use(express.static(Path.join(__dirname, 'public')));


//////////////////////////////////////////////////////////////////////////////////////////
// Rate limiting
//////////////////////////////////////////////////////////////////////////////////////////
const rateLimit = require("express-rate-limit");
const apiLimiter = rateLimit({
  windowMs: 24 * 60 * 60 * 1000, // 24 hours
  max: 50
});
 
// only apply to requests that begin with /api/
app.use("/signIn", apiLimiter);

//////////////////////////////////////////////////////////////////////////////////////////
// Photo management
//////////////////////////////////////////////////////////////////////////////////////////
var JSZip = require("jszip");
var request = require('request');
var archiver = require('archiver');

downloadImage = async (uri, filename, callback) => {
  request.head(uri, function(err, res, body){
    request(uri).pipe(fs.createWriteStream(filename)).on('close', callback);
  });
};

app.get('/imageDownload', function (req, res) {    
    var organisation = req.query.organisation;  
    var jobRef = req.query.jobRef;             
    res.download('secureFiles/imageZips/' + organisation + '/' + jobRef + '.zip'); 
});

app.post("/downloadImages", async (req, res) => {
  try {
    const requestURL = req.body.requestURL;
    console.log(requestURL)
    const rootDirectory = process.cwd();
    fsExtra.emptyDirSync(`${__dirname}/upload/`);
    const getJsonFile = async () => {
      try {
        const resp = await axios.get(
          `https://res.cloudinary.com/alvari/image/list/${requestURL}`
        );
        return resp.data.resources;
      } catch (e) {
        console.log(e);
        res.status(500).send(e);
      }
    };
    await getJsonFile();
    const createZipFile = async () => {
      const sourceDir = resolve(rootDirectory, "upload");

      let zip = new JsZip();
      buildZipFromDirectory(sourceDir, zip, sourceDir);

      const zipContent = await zip.generateAsync({
        type: "nodebuffer",
        comment: "ser-web-manangement",
        compression: "DEFLATE",
        compressionOptions: {
          level: 9,
        },
      });
      return zipContent;
    };
    const buildZipFromDirectory = (dir, zip, root) => {
      const list = fs.readdirSync(dir);

      for (let file of list) {
        file = path.resolve(dir, file);
        let stat = fs.statSync(file);
        if (stat && stat.isDirectory()) {
          this.buildZipFromDirectory(file, zip, root);
        } else {
          const filedata = fs.readFileSync(file);
          zip.file(path.relative(root, file), filedata);
        }
      }
    };
    const dest = `${__dirname}/upload/`;
    var count = 0;

    let src = await getJsonFile();

    var recursiveDowload = async function (urlArray, i) {
      if (i < urlArray.length) {
        console.log(urlArray[i].public_id);
        request
          .get(
            "https://res.cloudinary.com/alvari/image/upload/" +
              urlArray[i].public_id
          )
          .on("error", function (err) {
            console.log(err);
          })
          .pipe(
            fs.createWriteStream(
              `${__dirname}/upload/` +
                `${urlArray[i].public_id.split("/")[1]}.` +
                urlArray[i].format
            )
          )
          .on("close", function () {
            recursiveDowload(urlArray, i + 1);
          });
      } else {
        const fileer = await createZipFile();
        fsExtra.emptyDirSync(`${__dirname}/upload/`);
        res.setHeader("content-type", "arrayBuffer");
        res.send(fileer);
      }
    };
    recursiveDowload(src, 0);
  } catch (e) {
    console.log(e);
    fsExtra.emptyDirSync(`${__dirname}/upload/`);

    res.status(500).send(e);
  }
});


//////////////////////////////////////////////////////////////////////////////////////////
// Error handling
//////////////////////////////////////////////////////////////////////////////////////////
// catch 404 and forward to error handler
app.use(function (req, res, next) {
    var err = new Error('Not Found');
    //err.status = 404;
    next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function (err, req, res, next) {
        res.status(err.status || 500);
        res.render('error.pug', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
    res.status(err.status || 500);
    res.render('error.pug', {
        message: err.message,
        error: {}
    });
});

app.use(function (req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Methods", "GET,HEAD,OPTIONS,POST,PUT");
    res.header(
    "Access-Control-Allow-Headers",
    "Origin, X-Requested-With, Content-Type, Accept,Authorization"
    );
    next();
});

app.set('port', process.env.PORT || 3000);

var server = app.listen(app.get('port'), function () {
    debug('Express server listening on port ' + server.address().port);
});

//“严格使用”；
var debug=require（'debug'）；
var express=需要（“express”）；
var Path=require（'Path'）；
var记录器=需要（'morgan'）；
var cookieParser=require（'cookie-parser'）；
var csrf=需要（'csurf'）；
var bodyParser=require（'body-parser'）；
var http=require（“https”）；
var favicon=要求（'serve-favicon'）；
const resolve=require（“路径”）.resolve；
var JsZip=require（'JsZip'）；
var fs=需要（'fs-extra'）；
const uuid=require（“uuid”）；
var请求=要求（“请求”）；
var https=require（'https'）；
常量axios=要求（“axios”）；
常量路径=要求（“路径”）；
const fsExtra=需要（“fs extra”）；
var刮刀=需要（“图像刮刀”）；
//环境设置
const currentEnv='PROD'//“PROD”或“DEV”
const cloudinaryFolder='inspectAPP'//“inspectAPP”或“inspectAPP开发”
//设置路由中间件
var csrfProtection=csrf（{cookie:true}）
var-app=express（）；
//戴头盔
var头盔=需要（“头盔”）；
应用程序使用(
安全政策({
指令：{
defaultSrc:[“'self'”，
scriptSrc:[“'self'”、“'safe-inline'”、“cdnjs.cloudflare.com”、“ajax.googleapis.com”、“maxcdn.bootstrapcdn.com”、“cdn.jsdeliver.net”、“stackpath.bootstrapcdn.com”]，
styleSrc:[“'self'”、“unsafe-inline'”、“stackpath.bootstrapcdn.com”、“fonts.googleapis.com”、“cdnjs.cloudflare.com”、“maxcdn.bootstrapcdn.com”、“use.fontsawesome.com”]，
imgSrc:[“*”、“'self'”、“cdnjs.cloudflare.com”]，
fontSrc:[“*”，“'self'”，“fonts.gstatic.com”]，
frameSrc:[“'self'”，“jimmywarting.github.io”]，
objectSrc:[“'none'”，
connectSrc:[“'self'”，“res.cloudinary.com”，“cloudinary.com”]，
升级不安全请求：[]，
},
})
);
应用程序禁用（“x供电”）；
//查看引擎设置
//查看引擎设置
app.set（'views'，Path.join（'views'）；
应用程序集（“查看引擎”、“帕格”）；
应用程序使用（favicon（uu dirname+'/public/images/favicon.ico'）；
应用程序使用（记录器（“开发”）；
app.use（bodyParser.urlencoded({
扩展：false
}));
use（bodyParser.json（））；
//将一些自定义内容解析到缓冲区中
var rawOptions={
膨胀：是的，
限制：“100mb”，
类型：“应用程序/八位字节流”
};
app.use（bodyParser.raw（rawOptions））；
使用（cookieParser（））；
app.use（express.static（Path.join（uu dirname，'public'））；
//////////////////////////////////////////////////////////////////////////////////////////
//速率限制
//////////////////////////////////////////////////////////////////////////////////////////
常数费率限制=要求（“明示费率限制”）；
常数=速率限制({
windowMs:24*60*60*1000，//24小时
最高：50
});
//仅适用于以/api开头的请求/
应用程序使用（“/sign”，API）；
//////////////////////////////////////////////////////////////////////////////////////////
//照片管理
//////////////////////////////////////////////////////////////////////////////////////////
var JSZip=require（“JSZip”）；
var请求=要求（“请求”）；
var archiver=需要（“archiver”）；
downloadImage=async（uri、文件名、回调）=>{
head（uri，函数（err，res，body）{
请求（uri）.pipe（fs.createWriteStream（filename））.on（'close'，callback）；
});
};
app.get（'/imageDownload'，函数（req，res）{
var Organization=req.query.organization；
var jobRef=req.query.jobRef；
res.download（'secureFiles/imageZips/'+organization+'/'+jobRef+'.zip'）；
});
app.post（“/downloadImages”），异步（req，res）=>{
试一试{
const requestURL=req.body.requestURL；
日志（requestURL）
const rootDirectory=process.cwd（）；
emptyDirSync（`${uuuu dirname}/upload/`）；
const getJsonFile=async（）=>{
试一试{
const resp=等待axios.get(
`https://res.cloudinary.com/alvari/image/list/${requestURL}`
);
返回相应的数据资源；
}捕获（e）{
控制台日志（e）；
资源状态（500）。发送（e）；
}
};
等待getJsonFile（）；
const createZipFile=async（）=>{
const sourceDir=resolve（rootDirectory，“upload”）；
让zip=newjszip（）；
buildZipFromDirectory（sourceDir、zip、sourceDir）；
const zipContent=await zip.generateAsync({
类型：“nodebuffer”，
评论：“ser网络管理”，
压缩：“放气”，
压缩选项：{
级别：9，
},
});
返回zipContent；
};
const buildZipFromDirectory=（dir，zip，root）=>{
const list=fs.readdirSync（dir）；
对于（让列表的文件）{
file=path.resolve（dir，file）；
让stat=fs.statSync（文件）；
if（stat&&stat.isDirectory（））{
这个.buildZipFromDirectory（文件、zip、根目录）；
}否则{
const filedata=fs.readFileSync（文件）；
zip.file（path.relative（root，file），filedata）；
}
}
};
const dest=`${uu dirname}/upload/`；
var计数=0；
让src=wait getJsonFile（）；
var recursiveDowload=异步函数（URLARY，i）{
if（i//'use strict';
var debug = require('debug');
var express = require('express');
var Path = require('path');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var csrf = require('csurf');
var bodyParser = require('body-parser');
var http = require("https");
var favicon = require('serve-favicon');
const resolve = require("path").resolve;
var JsZip = require('jszip');
var fs = require('fs-extra');
const uuid = require("uuid");
var request = require('request');
var https = require('https');

const axios = require("axios");

const path = require("path");
const fsExtra = require("fs-extra");
var Scraper = require("image-scraper");

//ENVIRONMENT SETUP
const currentEnv = 'PROD'; //Either 'PROD' OR 'DEV'
const cloudinaryFolder = 'inspectAPP'; //Either 'inspectAPP' OR 'inspectAPP-dev'

// setup route middlewares
var csrfProtection = csrf({ cookie: true })

var app = express();

//Set up helmet
var helmet = require('helmet');
app.use(
  helmet.contentSecurityPolicy({
    directives: {
      defaultSrc: ["'self'"],
      scriptSrc: ["'self'", "'unsafe-inline'", "cdnjs.cloudflare.com", "ajax.googleapis.com", "maxcdn.bootstrapcdn.com", "cdn.jsdelivr.net", "stackpath.bootstrapcdn.com"],
      styleSrc: ["'self'", "'unsafe-inline'", "stackpath.bootstrapcdn.com", "fonts.googleapis.com", "cdnjs.cloudflare.com", "maxcdn.bootstrapcdn.com", "use.fontawesome.com"],
      imgSrc: ["*", "'self'", "cdnjs.cloudflare.com"],
      fontSrc: ["*", "'self'", "fonts.gstatic.com"],
      frameSrc:["'self'","jimmywarting.github.io"],
      objectSrc: ["'none'"],
      connectSrc: ["'self'", "res.cloudinary.com", "cloudinary.com"],
      upgradeInsecureRequests: [],
    },
  })
);
app.disable('x-powered-by');


// view engine setup 
// view engine setup
app.set('views', Path.join(__dirname, 'views'));
app.set('view engine', 'pug');


app.use(favicon(__dirname + '/public/images/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.urlencoded({
    extended: false
}));
app.use(bodyParser.json());
// parse some custom thing into a Buffer
var rawOptions = {
  inflate: true,
  limit: '100mb',
  type: 'application/octet-stream'
};

app.use(bodyParser.raw(rawOptions));

app.use(cookieParser());
app.use(express.static(Path.join(__dirname, 'public')));


//////////////////////////////////////////////////////////////////////////////////////////
// Rate limiting
//////////////////////////////////////////////////////////////////////////////////////////
const rateLimit = require("express-rate-limit");
const apiLimiter = rateLimit({
  windowMs: 24 * 60 * 60 * 1000, // 24 hours
  max: 50
});
 
// only apply to requests that begin with /api/
app.use("/signIn", apiLimiter);

//////////////////////////////////////////////////////////////////////////////////////////
// Photo management
//////////////////////////////////////////////////////////////////////////////////////////
var JSZip = require("jszip");
var request = require('request');
var archiver = require('archiver');

downloadImage = async (uri, filename, callback) => {
  request.head(uri, function(err, res, body){
    request(uri).pipe(fs.createWriteStream(filename)).on('close', callback);
  });
};

app.get('/imageDownload', function (req, res) {    
    var organisation = req.query.organisation;  
    var jobRef = req.query.jobRef;             
    res.download('secureFiles/imageZips/' + organisation + '/' + jobRef + '.zip'); 
});

app.post("/downloadImages", async (req, res) => {
  try {
    const requestURL = req.body.requestURL;
    console.log(requestURL)
    const rootDirectory = process.cwd();
    fsExtra.emptyDirSync(`${__dirname}/upload/`);
    const getJsonFile = async () => {
      try {
        const resp = await axios.get(
          `https://res.cloudinary.com/alvari/image/list/${requestURL}`
        );
        return resp.data.resources;
      } catch (e) {
        console.log(e);
        res.status(500).send(e);
      }
    };
    await getJsonFile();
    const createZipFile = async () => {
      const sourceDir = resolve(rootDirectory, "upload");

      let zip = new JsZip();
      buildZipFromDirectory(sourceDir, zip, sourceDir);

      const zipContent = await zip.generateAsync({
        type: "nodebuffer",
        comment: "ser-web-manangement",
        compression: "DEFLATE",
        compressionOptions: {
          level: 9,
        },
      });
      return zipContent;
    };
    const buildZipFromDirectory = (dir, zip, root) => {
      const list = fs.readdirSync(dir);

      for (let file of list) {
        file = path.resolve(dir, file);
        let stat = fs.statSync(file);
        if (stat && stat.isDirectory()) {
          this.buildZipFromDirectory(file, zip, root);
        } else {
          const filedata = fs.readFileSync(file);
          zip.file(path.relative(root, file), filedata);
        }
      }
    };
    const dest = `${__dirname}/upload/`;
    var count = 0;

    let src = await getJsonFile();

    var recursiveDowload = async function (urlArray, i) {
      if (i < urlArray.length) {
        console.log(urlArray[i].public_id);
        request
          .get(
            "https://res.cloudinary.com/alvari/image/upload/" +
              urlArray[i].public_id
          )
          .on("error", function (err) {
            console.log(err);
          })
          .pipe(
            fs.createWriteStream(
              `${__dirname}/upload/` +
                `${urlArray[i].public_id.split("/")[1]}.` +
                urlArray[i].format
            )
          )
          .on("close", function () {
            recursiveDowload(urlArray, i + 1);
          });
      } else {
        const fileer = await createZipFile();
        fsExtra.emptyDirSync(`${__dirname}/upload/`);
        res.setHeader("content-type", "arrayBuffer");
        res.send(fileer);
      }
    };
    recursiveDowload(src, 0);
  } catch (e) {
    console.log(e);
    fsExtra.emptyDirSync(`${__dirname}/upload/`);

    res.status(500).send(e);
  }
});


//////////////////////////////////////////////////////////////////////////////////////////
// Error handling
//////////////////////////////////////////////////////////////////////////////////////////
// catch 404 and forward to error handler
app.use(function (req, res, next) {
    var err = new Error('Not Found');
    //err.status = 404;
    next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function (err, req, res, next) {
        res.status(err.status || 500);
        res.render('error.pug', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
    res.status(err.status || 500);
    res.render('error.pug', {
        message: err.message,
        error: {}
    });
});

app.use(function (req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Methods", "GET,HEAD,OPTIONS,POST,PUT");
    res.header(
    "Access-Control-Allow-Headers",
    "Origin, X-Requested-With, Content-Type, Accept,Authorization"
    );
    next();
});

app.set('port', process.env.PORT || 3000);

var server = app.listen(app.get('port'), function () {
    debug('Express server listening on port ' + server.address().port);
});

app.use(bodyParser.json({limit: '100mb'}));
app.use(bodyParser.urlencoded({     
limit: '100mb',
extended: true
}));