socket programing in elisp

[Alexandre Russel]

I am trying to create a server in elisp. I had a look at M-x
apropos .*socket.* and .*network.* but all the functions seems to
be for client to connect to a server not for a server to create a
socket and wait for connection.
I found a what I want for common lisp open-server-socket 
(http://cl-cookbook.sourceforge.net/sockets.html)
and would like to find the equivalent function for elisp(or a
package that have that function).
Any help welcome,
Cheers,
Alex