Types of Linux Sockets

Sockets allow communication between two different processes on the same or different machines. To be more precise, it's a way to talk to other computers using standard Unix file descriptors. In Unix, every I/O action is done by writing or reading a file descriptor. A file descriptor is just an integer associated with an open file and it can be a network connection, a text file, a terminal, or something else.
To a programmer, a socket looks and behaves much like a low-level file descriptor. This is because commands such as read() and write() work with sockets in the same way they do with files and pipes.
Where is Socket Used?
A Unix Socket is used in a client-server application framework. A server is a process that performs some functions on request from a client. Most of the application-level protocols like FTP, SMTP, and POP3 make use of sockets to establish connection between client and server and then for exchanging data.
Syntax:
int socket(int domain, int type, int protocol)

Here., Domain refers to: Socket Family
Ex:AF_UNIX,AF_INET ,AF_NETLINK etc.
Protocol refers to: The type of Protocol we want to use
Ex:TCP,UDP,ICMP etc.
Type refers to: Socket Service Type

Socket Service Types:

The following socket types are.....
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