Socket and spawn()

[Andy Valencia]

I'm coding a server which takes TCP connections.  I end up in the 
main thread with .accept() which hands me a Socket.  I'd like to 
hand this off to a spawn()'ed thread to do the actual work.

     Aliases to mutable thread-local data not allowed.

Is there some standard way to get something which _isn't_ in TLS? 
  Or do I have to drop back to file descriptors and do my own 
socket handling?

TIA,
Andy