compilation:
cc -o server server.c
cc -o client client.c

1.First you have to run the server
2.You have to give the server ip in (client.c) (you have to manually enter to c file)
3.And you have to register your user name(user name should be six letter)
4 once done the registration your connection is estabilished then you can send the message.
5 exmple
     your register name: vignes
     friend register name : manikan (should be six letter)

     <friend register name>-<your message>
     manikan-Hai