SSRF on syscall command about fravia-bot HOT 1 CLOSED

I tried to replicate the attack, and I saw that the problem isn't associated with the bot code, I think it is some problem or functionality of discord.app
Here follows my test:
On my notebook I executed the following code

>>> import requests
>>> url = 'http://man7.org/linux/man-pages/man2/{}.2.html'.format('&@http://myvps.com')
>>> r = requests.get(url)

And on my server log I didn't receive any request, but when I executed the command on the bot, I receive a request from discord.app

35.196.69.119 - - [03/Jan/2018:14:47:39 -0600] "GET / HTTP/1.1" 200 10956 "-" "Mozilla/5.0 (compatible; Discordbot/2.0; +https://discordapp.com)"

from fravia-bot.