HTTP: request & response
Lonce Wyse
Communication & New Media
lonce.wyse@cnm.nus.sg
HTTP protocol
"Hypertext Transfer Protocol"
http://animatedsoundworks.com:8001/Your_Page.html?=b&x=y
protocol
path
host server
port
query
Other necessary info?
sent automatically
Client makes a request to the server:
HTTP: request
HTTP: request
- GET: fetch an existing resource. The URL contains all the necessary information the server needs to locate and return the resource.
- POST: create a new resource. POST requests usually carry a payload that specifies the data for the new resource
GET /dumprequest HTTP/1.1 Host: rve.org.uk Connection: keep-alive Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.99 Safari/537.36 Referer: https://www.google.com.sg/ Accept-Language: en-US,en;q=0.8 DNT: 1 Via: 1.1 swiftcache1-cc.network.nus.edu.sg X-Forwarded-For: 172.16.76.227
HTTP: response
- The most common code is 200 OK.
- 404 indicates that the resource is invalid and does not exist on the server.
Status codes:
Message body
- text, html (files or dynamically created), etc