Learning AWK Programming

UDP client and server ( /inet/udp )

The server and client program that use the UDP protocol for communication are almost identical to their TCP counterparts, with the only difference being that the protocol is changed to udp from tcp. So, the UDP-server and UDP-client program can be written as follows:

$ vi udpserver.awk#UDP-ServerBEGIN    {    print strftime() |& "/inet/udp/8080/0/0"    "/inet/udp/8080/0/0" |& getline    print $0    close("/inet/udp/8080/0/0")    }$ awk -f udpserver.awk

Here, only one addition has been made to the client program. In the client, we send the message hello from client ! to the server. So when we execute this program on the receiving Terminal, where the udpclient.awk program is run, we get the remote system date time. And on ...