Http Protocol

1. Topic : http
Presented by : M.NORAIZ
Presented to : Mam Shehla
Roll # : 11364
Department : BS.S.E(1st B)

2. Define http? What is http?
HTTP (Hypertext Transfer Protocol) is the
set of rules for transferring files (text,
graphic images, sound, video, and other
multimedia files) on the World Wide
Web. Communication between client
computers and web servers is done by
sending HTTP Requests and receiving
HTTP Responses

3. Define http? HTTP Request / Response
1. A client (a browser) sends an HTTP request to the web
2. An web server receives the request
3. The server runs an application to process the request
4. The server returns an HTTP response (output) to the browser
5. The client (the browser) receives the response
Communication between clients and servers is done by requests and responses:

4. Define http? The HTTP Request Circle
 The browser requests an HTML page. The server returns an HTML file.
 The browser requests a style sheet. The server returns a CSS file.
 The browser requests an JPG image. The server returns a JPG file.
 The browser requests JavaScript code. The server returns a JS file
A typical HTTP request / response circle:

5. Define http?
 Example
HTTP request to fetch youtube.html page that exist on the web server running on
ns1.google.com.
Request
youtube.html
User-Agent: Mozilla/4.0 (Windows 10)
IP=39.36.188.45
Date:Th,10, Jan ,2019 12:36:20 GMT
Connection: Keep-Alive
Response
OK
Server:ns1.google.com
Content-Type: text/html;
Date: Th,10, Jan,2019 12:36:20 GMT
Connection: Closed

6.  Example
1. http request.
1. http response.
YouTube
By user(Browser).
By server.