Question

what is socket programming ?
what things you should know to write an chat application ?

Answer 1

socket pgmng is a huge concept
1st deal what a socket is?
a socket is defined as end point of communication
in case of ur system your NIC card's socket is a socket
It is based how a client requests a server and how a sevr replies it
pgmng them is called as socket programing
You can develop a chat application using socket pgmng