Please add support for MTProxy is behind HAProxy

[myfingerhurt]

My MTProxy is behind nginx and I have to use proxy_protocol but all the statistics becomes 127.0.0.1 pretty much useless.

Would you please add support for proxy_protocol ?

PROXY_PROTOCOL = True
Like this does support proxy_protocol.
https://github.com/alexbers/mtprotoproxy

[MTProto]

I try to add this capability to proxy. Thanks for your suggestion.