Nodejs sending file through http - node.js

Question

I'm trying to send a file to another node.js service. So for that i'm using http and form-data modules.
This is the code i wrote
function uintToString(uintArray) {
return String.fromCharCode.apply(null, new Uint8Array(uintArray));
}
function (file) {
var data = uintToString(file.buffer);
//
var crlf = "\r\n",
boundaryKey = Math.random().toString(16),
boundary = `--${boundaryKey}`;
delimeter = `${crlf}--${boundary}`,
preamble = "", // ignored. a good place for non-standard mime info
epilogue = "",
headers = [
'Content-Disposition: form-data; name="file"; filename="' + name + '"' + crlf
],
closeDelimeter = `${delimeter}--`,
multipartBody = Buffer.concat(
new Buffer(preamble + delimeter + crlf + headers.join('') + crlf),
data,
new Buffer(closeDelimeter + epilogue)
);
var options = {
host: 'localhost',
port: 3000,
method: 'POST',
path: '/data/get',
headers: {
'Content-Type': 'multipart/form-data; boundary=' + boundary,
'Content-Length': formData._valueLength
}
};
//make request
return httpsRequest(formData, options)
.then((result) => {
console.log(result);
}, (err) => {
console.log(err);
});
};
function httpsRequest(data, options) {
return new Promise(function (resolve, reject) {
// request object
var req = https.request(options, function (res) {
var result = '';
res.on('data', function (chunk) {
result += chunk;
});
res.on('end', function () {
console.log("https end result - " + result);
resolve(result);
});
res.on('error', function (err) {
reject(err);
})
});
// req error
req.on('error', function (err) {
reject(err);
});
//send request witht the postData form
req.write(data);
req.end();
});
}
It is giving ""list" argument must be an Array of Buffers" this error. It looks like something is wrong on the httpsRequest function.

Answer 1

Don't reinvent the wheel, needle/request can do this for you. If you want to promisify things, use bluebird
const Promise = require('bluebird')
const needle = Promise.promisifyAll(require('needle'))
function send (file) {
let url = 'https://localhost/data/get'
let data = {
zip_file: {
buffer : file.buffer,
filename : name,
content_type : 'application/octet-stream'
}
}
return needle.postAsync(url, data, { multipart: true })
}