//test altera TSE speed with udp sending loop, data_length is from 1 to 32, so 1K to 32K data is sent by one sendto
for (i=0;i<send_loop;i++)
{
iRet=sendto(m_udp_socket, (char *)pData_buff, data_length*1024,0,(struct sockaddr *)&addrin,ipLen); //second send back handshake