Join Doug Winnie for an in-depth discussion in this video HTTP and requests, part of Computer Science Principles: The Internet.
- When you are working with a web browser,…you are sending a web server a request for information.…And then you get a response back from the server,…with the information the browser needs…to display information on the screen.…This communication back and forth,…between the browser and the server…is called Hypertext Transfer Protocol, or HTTP.…HTTP requests and communication…take place on top of TCP/IP protocol.…You can think of HTTP as a specific language…that communicates on the same network as other languages.…
When you speak with someone…you need to make sure that they are listening.…With a person, the person you're talking to…needs to be listening for a message from someone.…The same exists with the web.…A web server needs to have something…that is listening for requests.…Those requests are in the format of an HTTP request.…When someone enters in a URL…like www.dougminnie.com to their web browser,…they are sending an HTTP request that is attempting…to get information from the server.…
First, the browser finds the IP address of the server,…
This course is the second in our Computer Science Principles series, designed around the AP Computer Science Principles (CSP) curriculum. It is a great foundation for anyone, at any age, to prepare for careers in technology and computer science. Understanding basics like the Internet will help you understand the interplay between hardware, software, data, networks, and the people that use them.
- How the Internet was born
- Sending and receiving information on a computer
- IP addressing
- DNS, routers, and packets
- Identifying web servers with URLs
- HTTP and HTML
- Encrypting data that's sent over the Internet