Node.js native file upload form

Question

i have a question: Is there any way to create native file upload system in node.js? Without modules like multer, busboy and others. I just want save it from file form. Like:

<form action="/files" method="post">
     <input type="file" name="file1">
</form>

It's possible to acces this file native in node.js? Maybe im wrong, but if this modules do it, it must be possible, right?

well, of course, most of those modules are written in what you call "native" node.js. — Kevin B, Jul 17 '15 at 14:23
possible duplicate of [Nodejs server that accepts POST requests](http://stackoverflow.com/questions/12006417/nodejs-server-that-accepts-post-requests) — stdob--, Jul 17 '15 at 14:29

score 3 · Accepted Answer · answered May 06 '20 at 00:34

It is possible. An example is below.

const http = require('http');
const fs = require('fs');

const filename = "logo.jpg";
const boundary = "MyBoundary12345";

fs.readFile(filename, function (err, content) {
    if (err) {
        console.log(err);
        return
    }

    let data = "";
    data += "--" + boundary + "\r\n";
    data += "Content-Disposition: form-data; name=\"file1\"; filename=\"" + filename + "\"\r\nContent-Type: image/jpeg\r\n";
    data += "Content-Type:application/octet-stream\r\n\r\n";

    const payload = Buffer.concat([
        Buffer.from(data, "utf8"),
        Buffer.from(content, 'binary'),
        Buffer.from("\r\n--" + boundary + "--\r\n", "utf8"),
    ]);

    const options = {
        host: "localhost",
        port: 8080,
        path: "/upload",
        method: 'POST',
        headers: {
            "Content-Type": "multipart/form-data; boundary=" + boundary,
        },
    }

    const chunks = [];
    const req = http.request(options, response => {
        response.on('data', (chunk) => chunks.push(chunk));
        response.on('end', () => console.log(Buffer.concat(chunks).toString()));
    });

    req.write(payload)
    req.end()
})

The question is interesting. I wonder why it is not already answered (4 years, 9 months).

Node.js native file upload form

1 Answers1

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