multipart-examples.js

/////////
	var chunk_cnt = 0;
		var upload = function() {
			//   /{user-id}/feed?message={message}&access_token={access-token}

			aReportProgress({
				body_prefix: 'Chunk ' + (++chunk_cnt) + ' - ',
				reason: formatStringFromName('uploading_init', 'app')
			});

			console.error('prparing chunk', chunk_cnt, 'for upload, offsets:', {start_offset, end_offset});
			var multipart_data = new FormData();
			var blob = new Blob([rec.arrbuf.slice(start_offset, end_offset)], {type:rec.mimetype});
			var file = new File([blob], 'chunk' + chunk_cnt + '.' + rec.mimetype.substr(rec.mimetype.indexOf('/')+1));
			multipart_data.append('video_file_chunk', file);

			multipart_data.append('access_token', sess.access_token);
			multipart_data.append('start_offset', start_offset);
			multipart_data.append('end_offset', end_offset);
			multipart_data.append('upload_session_id', upload_session_id);
			multipart_data.append('upload_phase', 'transfer');

			xhrAsync(
				'https://graph.facebook.com/v2.6/me/videos',
				{
					method: 'POST',
					responseType: 'json',
					data: multipart_data,
					onuploadprogress: genericOnUploadProgress.bind(null, rec, aReportProgress)
				},
				verifyOauthXhrBind(rec.serviceid, checkUpload, aActionFinalizer, aReportProgress)
			);
		};
//////////


		// build data
		var metadata = {
			name: autogenScreenshotFileName(shot.sessionid) + '.png',
			mimeType: 'image/png'
			// parents: ['0B5IwavgVGMN9ekR2dEhuaUxkZTA'] // set this to the id of a the folder you want to upload it into
		};

		var boundary = '-------' + Date.now();
		var delimiter = '\r\n--' + boundary + '\r\n';
		var close_delim = '\r\n--' + boundary + '--';

		var data = '';
		data += delimiter + 'Content-Type: application/json\r\n\r\n';
		data += JSON.stringify(metadata);
		data += delimiter + 'Content-Type: image/png\r\n';
		data += 'Content-Transfer-Encoding: base64\r\n\r\n';
		data += base64ArrayBuffer(shot.arrbuf); // Transfer images as base64 string.
		data += close_delim;

		xhrAsync(
			'https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart',
			{
				method: 'POST',
				data,
				headers: {
					Authorization: 'Bearer ' + cConfgure.session_details.access_token,
					'Content-Type': 'multipart/form-data;  boundary="' + boundary + '"'
				},
				responseType: 'json'
			},
			verifyOauthXhrBind(shot, checkUpload, aActionFinalizer, aReportProgress)
		);