DCC Send is an excellent solution (although quite crappy UX until you get used to it). It does, however, suffer from a couple of limitations which make it inviable in 2017.

1) It can't traverse NAT, you have to forward the ports on your router- which is quite frustrating.

2) It can't use ipv6, which would have eliminated the first problem, but unfortunately without ipv6 it can't do that.

Unless of course you have a dedicated IPv4 for your DCC sender and receiver, but I think that is improbable.

I do! And it mostly worked. And was quite good for transfers, no matter how mall or big the file was.