Just a naive replay of MTProto-proxy client to verify that it's "correctly" fingerprinted by DPI without any active probing. :-)

Details in Russian:

• https://t.me/rknapocalypsetime/108
• https://t.me/usher2/163
• https://www.facebook.com/phil.kulin/posts/1681847658535625
• https://www.facebook.com/mathemonkey/posts/10204761365831074

Disclaimer: if this probe does not trigger RST from DPI it does not mean that MTProto proxy works for you.