tcpip communication between MATLAB and embedded board

Hi, I am using tcpip communication between MATLAB and embedded board. The connection is successfully established between both and also board sends acknowledgement to MATLAB after connection, when I read data single time then I am getting data,but I am not able to read data continuously which is sent by board to MATLAB. Also I have check whether data is send from board is correct but I am getting BytesAvailable for port as 0 if I read data in loop.

Please suggest me any solution how can I read continuous data in tcp.

Thanks.