Designing an echo server
For this example, we will implement an echo server. An echo server is a network server that echoes back any data it receives from a client. In other words, when a client sends a message to an echo server, the server returns the same message to the client. The purpose of an echo server is to demonstrate basic communication between a client and a server. The echo server operates based on a simple request-response model. When a client connects to the server, it establishes a communication channel with the server. The client can then send a message to the server over this channel. The server receives the message, processes it, and sends the same message back to the client. The client can then receive and display the echoed message. Echo servers are commonly used for testing network connectivity, troubleshooting, and verifying the integrity of network communication. They allow developers to check whether the network functions properly by verifying that the data...