Node js从服务器提供文件主体并在浏览器中下载

Question

I have a file repository and when i call it from the browser it automatically downloads the file and this is fine. But i want to do this request on my server, and then serve the file result to the browser. Here is the example of the get request from my server.

downloadFile(req , res , next) {
    let options = {
         url: 'url to my file repo',
    };

    request(options, function (err, resp, body) {
       if (err) {
           res.status(500).send("");
           return
       }

       for (const header in resp.headers) {
           if (resp.headers.hasOwnProperty(header)) {
               res.setHeader(header, resp.headers[header]);
           }
       }
       resp.pipe(res);
    })
}

The request is working fine, and when i access my server from the browser it starts downloading the file. Everything seems to work fine except one thing, the file can't be opened. This file format can't be opened , says me the image player (if the file is image for example). Where is the problem, Is it the way i serve the file from the server? Thank you in advance. I lost a lot of time and can't find the solution.

Answer 1

Because what you probably want to send is the body of the request (eg the data of your image). So instead of resp.pipe(res):

res.send(body)

Use the developer mode of your browser to check the network messages passing between the server and your browser.