[libtorrent] Can utp branch support an independent rendezvous server (stun server)

[h. <hr...@gm...>]

Hello!
  
 I now see that the current utp branch can only be based on the peer which has been connected as a rendezvous server, the hp_rendezvous message can only send to one peer which has been connected, and through it to send hp_connect message.
  
  In one of my very special environment, every pc is in a different LAN, only one server can be directly connected by everyone. so I want to run on this server a separate rendezvous server (stun server). Because of the large number of files to upload and the limit bandwidth,  I don't want the server to do other things, just want it to be a rendezvous server, only be used to assist rendezvous, not to support the file upload and so on.
  
 How can I do?  If I need to modify code, Hoping to talk about the main idea.
  
 thanks!