Download Image and Send it to an API using multipart/form-data

Question

I am trying to send a image from the internet to an API using multipart/form-data.

I was able to do this by saving the image in a temp folder using request.pipe(fs.createWriteStream) and upload using fs.createReadStream

But how can i do this without saving it in a temp folder?

I tried creating a new request and sending the body as a new Buffer but didn't work.

Extra information:

I am implementing the Telegram Bot API method sendPhoto: https://core.telegram.org/bots/api#sendphoto

I am using the request module for the integration: https://github.com/request/request

Thanks.

score 2 · Accepted Answer · edited May 23 '17 at 11:47

With the request node library, you can get binary content from the resource setting encoding: null in requestSettings. So the binary content is stored in memory into an object (Buffer).

To send a photo using the node-telegram-bot, you will do:

var TelegramBot = require('node-telegram-bot-api');
var bot = new TelegramBot(token);

var requestSettings = {
    url: 'http://httpbin.org/image',
    encoding: null
};

request(requestSettings, function (error, response, buffer) {
    if (!error && response.statusCode == 200) {
        bot.sendPhoto(chatId, buffer)
    }
});

score 0 · Answer 2 · answered Dec 20 '17 at 18:22

I Had the same problem and I resolved with the next code, using the request-promise library

    const rp = require('request-promise');

    const req = {
        'url': 'https://store.server.com',
        'json': true,
        'resolveWithFullResponse': true
    };

    req['formData'] = {
        media: rp.get('https://videourl.com')
    };
    return rp.post(req)
        .then(response => return response)
        .catch(error => return throw error);

Download Image and Send it to an API using multipart/form-data

2 Answers2