connection established but unable to send and receive message to server using Socket Programming in windows phone 8

Question

I read a lot on web but could not successfully send and receive message while connection established correctly using socket programming. one of the simple code is following, Actually, my task is: I have to make connection with server as I have IP and port and I have to send specific message to server; based on this message, server will reply. I want to know how to do it and in what sequence ? I also tried some other codes in which SocketSreamListener used but its event never raised. I also want to know if I use this listener.BindServiceNameAsync("?") then what should I pass into it and what are ports for windows phone on which I should listen etc

            var socket = new StreamSocket();
            var writer = new DataWriter(socket.OutputStream);
            var reader = new DataReader(socket.InputStream);

            await socket.ConnectAsync(new HostName("server ip"), "port")

            writer.WriteString("specific msg");
            await writer.StoreAsync();

            var bytesRead = await reader.LoadAsync(300000);
            var response = reader.ReadString(bytesRead);

I will be very thankful as I am stuck and could not get help. I am also unable to debug above code because when I reach reader.LoadAsync then control never returns to next line, I waited alot