What is Socket???

A server runs on a particular PC and contains a socket that’s certain to a specific port range. The server simply waits, paying attention to the socket for a client to create a association request.

A Socket is used in client-server application framework. A server could be a method that performs some functions for the asking 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.

Socket Types →There are four types of sockets available to the users.

Client Side →

The Client is aware of the hostname of the machine on that the server is running and therefore the port variety on which the server is listening. to form a connection request, the client tries to rendezvous with the server on the server’s machine and port. The client additionally has to determine itself to the server so it binds to a local port number that it’ll use during this connection. This is often typically assigned by the system.

The server accepts the connection. Upon acceptance,the server gets a replacement socket certain to the same local port and additionally has its remote endpoint set to the address and port of the client. It needs a new socket in order that it will still hear the first socket for connection requests whereas tending to the wants of the connected client.

On the client side, if the connection is accepted, a socket is with success created and also the client will use the socket to speak with the server.

The client side and server side will currently communicate by writing to or reading from their sockets.

Definition:

A Socket is one endpoint of a two-way communication link between two programs running on the network. A socket is bound to a port number so that the TCP layer can identify the application that data is destined to be sent to.

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