class SocketClient
    require 'socket'

    def init_conn(host,port)
        @@s = TCPSocket.open host, port
    end

    def send_msg(msg)
        msg.force_encoding("ASCII-8bit")
        len = msg.length
        @@s.puts [len].pack("I>") + msg
    end

    def read_msg()
        alen = @@s.sysread(4)
        newalen = alen.unpack('I>')[0]
        answer = @@s.read(newalen)
        return answer
    end

end