Please explain what a client program is

Answer 1

Have to say, laughed at @Simon Sauter's saucy little answer there. However, this kind of question does need a more substantial answer, as it is important to understand the Client-Server model in Computer Science.

So what is the Client-Server model? Well, it's rather self explanatory: there are client programs, and there are server programs. The server program listens for client programs requesting to connect to it, then executes code to dispatch a thread to handle that client. I'm not familiar with how to set these up in C# (having only done so with Python, Java, and C++), however, so I can't give examples with it. But the general steps are pretty simple for the client:

1. Request a connection to a server. This entails an IP address as well as a port. If you're working with raw sockets, you will definitely need them. Otherwise, a domain name will do.

2. Send or request data to/from the server. Anything you want to send, whether it's plain text, files, or authentication codes, gets done here.

3. Close the connection. Once you're done, you don't need it anymore.

The server is a little more complicated:

1. create a dispatcher, or main method, that listens for incoming client connections. Once a client if detected, create a thread to handle it.

2. Inside the client thread, we handle any incoming requests, whether to send data or to be received.

3. Once the client signals an end to the connection, or the connection times out, close the connection and stop the thread.

Answer 2

https://is.gd/StnVOj