socket server help

[Adwelean via Digitalmars-d-learn]

Hello,

I have a project of updater for a game with few functions for 
administrate the game and for this i need a server to communicate 
with my client side (written in C#).

I started to create the server but i have a problem with the 
"async" part, i tried std.concurrency for the receive thread but 
i have a problem with spawn function ("template 
std.concurrency.spawn cannot deduce function from argument types 
!()(void delegate(Tid ownerTid), Tid)").

I'm not sure of this part and i don't know how to achieve that.

The link of my server.d : 
https://github.com/Adwelean/EmperadorServer/blob/master/source/network/server.d

I'd like to know how i could do for create this part.

Sorry for my basic English,
Quentin