Creating a TCP Socket to a specified host and port:

    socket = tcp_connect('www.example.com',25)
    # => #<TCPSocket:0xb7bbde6c>

Or create a temporary TCP Socket that automatically closes:

    tcp_connect('www.example.com',1212) do |socket|
      socket.write("this is just a test\n")
      puts socket.readline
    end