What Is Client and Web Server?

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Heather Bennett

Have you ever wondered how websites work? How does your computer communicate with a server to fetch web pages? Well, the answer lies in the concept of client and web server.

What is a Client?

A client refers to a computer or device that requests information or services from another computer, known as a server. When you use your web browser to open a website, your computer acts as a client. It sends a request to the server hosting that website and receives the requested data in response.

What is a Web Server?

A web server, on the other hand, is a computer or software application that stores and delivers web pages to clients. It listens for incoming requests from clients, processes them, and sends back the requested data. Web servers are responsible for hosting websites and making them accessible over the internet.

Client-Server Communication

The communication between a client and server follows a specific protocol called the Hypertext Transfer Protocol (HTTP). When you type a URL in your browser’s address bar and hit enter, your client sends an HTTP request to the server specified in that URL.

HTTP Request

An HTTP request consists of several components:

  • Request Method: Specifies the action the client wants to perform (e.g., GET, POST).
  • URL: The location of the resource being requested.
  • Headers: Additional information sent along with the request (e., user-agent, accept-language).
  • Body: Optional data sent with certain types of requests (e., form data).

HTTP Response

The server processes the request and generates an HTTP response. An HTTP response also consists of several components:

  • Status Code: Indicates the success or failure of the request (e., 200 OK, 404 Not Found).
  • Headers: Additional information sent along with the response (e., content-type, server).
  • Body: The requested data itself, such as HTML, images, or other resources.

Conclusion

In summary, a client is a computer or device that requests information or services from a server, while a web server is a computer or software application that stores and delivers web pages to clients. Understanding how client-server communication works is essential for anyone interested in web development and networking.

So next time you browse the internet, remember that behind the scenes, your computer is acting as a client communicating with various web servers to bring you the content you love.

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