Test ruby ​​TCPSocket server?

Question

ruby

There is a server based on GServer.
There are also clients that send messages to the server.
Messages should be sent to other clients connected to the server.

How to test simultaneous connections with rspec (when one client sends while others listen)?

Sources:

# Handle each connection<br>
def serve(io)<br>
  io.puts("LOGIN\n")<br>
  # Listen for identifier<br>
  user = io.gets.chomp<br>
<br>
  ...<br>
<br>
  # Add connection to the list<br>
  @mutex.synchronize { @chatters[user] = io }<br>
<br>
  # Get and broadcast input<br>
  loop do<br>
<br>
    incoming = io.gets<br>
    broadcast(incoming, io)<br>
<br>
  end<br>
end<br>
<br>
#Send message out to everyone, but sender<br>
def broadcast(message="", sender)<br>
<br>
  # Mutex for safety - GServer uses threads<br>
  @mutex.synchronize do<br>
<br>
    @chatters.each do |chatter|<br>
<br>
      socket = chatter[1]<br>
<br>
      # Do not send to sender<br>
      if sock != sender<br>
<br>
        sock.print(message)<br>
<br>
      end<br>
<br>
    end<br>
<br>
  end<br>
end