Question

why we need socket programming? what its application.

Answer 1

Answer:
Socket programming which enables two or more hosts to communicate with each other. It shows how to use socket APIs to establish communication. Unless you’re making a standalone application, communication with “peers” is a necessity. Therefore the usage of the basic protocols like TCP/UDP or its underlying protocols (HTTP/DCHP) all lie under socket programming.
The process which uses a socket can reside on the same computer or different systems on different networks. Sockets are useful for both network applications and stand-alone application. A number of languages support socket programming like C, C++, Java, etc.
We can get data from any data from the internet using sockets like you can get the IP address of any particular host, Header information, web source, etc. Inter-Process communication can perform using socket programming. More than two processes can communicate using sockets. This is majorly used in the operating system. If one process required some information from other processes. It just creates a socket and it will get the details accordingly. We can also transfer files or messages from one computer to another computer. We can create any server, client applications like FTP, DNS, HTTP, etc.