Problem when getting HTTPS URL via HTTP package [Solved]

If I execute this:

HTTP.call('GET', 'https://soundcloud.com/');

I only get an exception:

[Error: failed [400] <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><link rel="dns-prefetch" href="//style.sndcdn.com"><link rel="dns-prefetch" href="//a-v2.sndcdn.com"><link rel="dns-prefetch" href="//api-v2.soundcloud.com"><link rel="dns-prefetch" href="//sb.scorecardresearch.com"><link rel="dns-prefetch" href="//secure.quantserve.com"><link rel="dns-prefetch" href="//eventlogger.soundcloud.com"><link rel="dns-prefetch" href="//api.soundclou...] stack: [Getter]

If I try the same request using https://www.hurl.it/, everything works fine, there I can see a valid 200 response. So the server seems to react correctly, but the GET method of Meteor’s HTTP package fails.

Any ideas why this is not working with HTTP.get()?

Found the solution: SoundCloud is using user agent detection and sends a 400 error response if the browser does not match its expectations.