Sockets
What is TCP?
Transmission Control Protocol (TCP) is a communication protocol that enables applications to exchange messages over a network and ensure the successful delivery of exchanged data packets. Due to its reliability, TCP is the favored protocol for many types of common applications.
Sockets
A socket is an endpoint that essentially allows us to connect the client and server using transmission control protocol.
Client-Server Architecture
Client-server architecture is made up of the following:
- Client - A tool (computer or software) used to request data from a server.
- Server - A tool (computer or software) used to respond to client requests.
- Request/Response - Communication model used by computer to communicate over a network.
Creating a ServerSocket
To create a ServerSocket in java, use the following code:
ServerSocket firstServerSocket = new ServerSocket(6868);
DataInputStream
A DataInputStream allows a program to read primitive data from an underlying input stream, while a DataOutputStream is used to write the primitive data.
Port Numbers
A socket is tied to a specific port number so that data can be sent between the client and server.
