URL component encoding in Node.js

I want to send http request using node.js. I do:

http = require('http');

var options = {
    host: 'www.mainsms.ru',
    path: '/api/mainsms/message/send?project='+project+'&sender='+sender+'&message='+message+'&recipients='+from+'&sign='+sign
    };

    http.get(options, function(res) {
    console.log('STATUS: ' + res.statusCode);
    console.log('HEADERS: ' + JSON.stringify(res.headers));
    }).on('error', function(e) {
    console.log('ERROR: ' + e.message);
    });

When my path like this:

/api/mainsms/message/send?project=geoMessage&sender=gis&message=tester_response&recipients=79089145***&sign=2c4135e0f84d2c535846db17b1cec3c6

Its work. But when message parameter contains any spaces for example tester response all broke. And in console i see that http use this url:

  /api/mainsms/message/send?project=geoMessage&sender=gis&message=tester

How to send spaces. Or i just can't use spaces in url?

What you are looking for is called URL component encoding.

path: '/api/mainsms/message/send?project=' + project + 
'&sender=' + sender + 
'&message=' + message +
'&recipients=' + from + 
'&sign=' + sign

has to be changed to

path: '/api/mainsms/message/send?project=' + encodeURIComponent(project) +
'&sender=' + encodeURIComponent(sender) +
'&message=' + encodeURIComponent(message) + 
'&recipients='+encodeURIComponent(from) +
'&sign=' + encodeURIComponent(sign)

Note:

There are two functions available. encodeURI and encodeURIComponent. You need to use encodeURI when you have to encode the entire URL and encodeURIComponent when the query string parameters have to be encoded, like in this case. Please read this answer for extensive explanation.