Send zip file from node.js server to node.js client

Question

I am trying to send a zip file from a node.js server to a node.js client but when i save the zip it is corrupted and will not open.

I am using adm-zip to zip the file and send to client

app.get('/checkForUpdate', function (req, res) {

    var zip = new AdmZip();
    zip.addLocalFile("./update.js");
    var willSendthis = zip.toBuffer();
    res.send(willSendthis);

});

here is my client code

$.ajax({
    type: 'GET',
    contentType: 'application/json',
    data: {version: version},
    url: 'http://localhost:3000/checkForUpdate',
    success: function (data) {

        fs.writeFile("update.zip", data, function(err) {

            if(err) {
                console.log(err);
            } else {
                console.log("The file was saved!");
            }

        });
    }
});

zivce · Accepted Answer · 2017-11-01 17:54:39Z

1

I guess this should be set for MIME type application/x-zip-compressed.

answered Nov 1, 2017 at 17:54

zivce

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1 Comment

zivce Over a year ago

Try these : application/zip, application/octet-stream

Aravind Vakil · Accepted Answer · 2022-09-23 11:47:55Z

1

If you want to compress a text or any data as a zip file you can use JSZip npm package.

I have given the link below to install it.

https://www.npmjs.com/package/jszip

The code below converts the text file and sends it as a buffer that the client can download.

const zip = new JSZip()
zip.file("Hello.txt", "Hello World\n")
const buffer = await zip.generateAsync({ type: `nodebuffer` })
res.writeHead(200,{ 'Content-Type': `application/zip` })
res.end(buffer)

answered Sep 23, 2022 at 11:47

Aravind Vakil

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Comments

Werlious · Accepted Answer · 2019-03-06 23:00:33Z

0

I think the issue is sending a buffer. If I remember right a buffer needs a mime type of octect-stream. Try using octect-stream in the header and have adm-zip load the buffer

answered Mar 6, 2019 at 23:00

Werlious

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