dropbox-mult.js

const https = require("https");
const JSONbig = require('json-bigint');

fs = require('fs')

const req = https.request(`https://content.dropboxapi.com/2/files/upload_session/start`, {
	method: 'POST',
	headers: {
		'Authorization': `Bearer ${TOKEN}`,
		'Dropbox-API-Arg': JSON.stringify({
			'close': false
		}),
    	'Content-Type': 'application/octet-stream',
	}
}, (res) => {
	res.on('data', (d) => {
		const json = JSON.parse(d.toString('utf8'));
		const session_id = json.session_id
		let offset = BigInt(0);

		const stream = fs.createReadStream('test-large.txt');
		stream.on('data', (chunk) => {
			console.log(offset);
			stream.pause();
			const reqAppend = https.request(`https://content.dropboxapi.com/2/files/upload_session/append_v2`, {
				method: 'POST',
				headers: {
					'Authorization': `Bearer ${TOKEN}`,
					'Dropbox-API-Arg': JSONbig.stringify({
						'cursor': {
							'session_id': session_id,
							'offset': offset
						},
						'close': false
					}),
			    	'Content-Type': 'application/octet-stream',
				}
			}, (res) => {
			    stream.resume();
			});

			reqAppend.write(chunk);
			reqAppend.end();

			offset += BigInt(chunk.length);
		});

		stream.on('end', () => {
			const reqFinish = https.request(`https://content.dropboxapi.com/2/files/upload_session/finish`, {
				method: 'POST',
				headers: {
					'Authorization': `Bearer ${TOKEN}`,
					'Dropbox-API-Arg': JSON.stringify({
						'cursor': {
							'session_id': session_id,
							'offset': offset
						},
						"commit": {
							"path": "/Upload/test-large.txt",
							"mode": "add",
							"autorename": true,
							"mute": false,
							"strict_conflict": false
						}
					}),
			    	'Content-Type': 'application/octet-stream',
				}
			}, (res) => {
				console.log('upload session finish')
				console.log("statusCode: ", res.statusCode);
			});

			reqFinish.end();
		});
	});
});


req.end();