XTI Client-Server examples, which receives and sends data to/from a port. 
The examples support the TCP/IP Protocol.

You can test the examples by doing:

1. For receiving data first start the server (nbttcp27). When the server starts, 
   it calls t_open, t_bind, t_listen and t_accept. The t_accept call blocks until
   a client request comes in.

2. Then start the client (nbttcp28), specifying the server's IP address as the first parameter, for 
   example 127.0.0.1. The client calls t_open, t_bind and t_connect to initiate the 
   connection to the server.

   Additional parameters for the client:
       parameter 2 is the amount of data to send 
       parameter 3:                  
              0  for transfer file (filename is parameter 4)
              1  to send prime numbers (not compressable)
              2  to send only zeroes (maximum compressable run-length)
              3  to send the pattern "TESTTEST" (good compressable LZ)
       parameter 4 is filename (optional)
  
When the connection is finished, both the server and the client display the time used in 
milliseconds, the amount of data sent and the speed of the connection.