Hypertext transfer protocol
Content
SITI AMELIA BINTI AHMAD 51262111365 NADIAH BINTI ROSTAM 51262111376
Stands
for Hyper Text Transfer Protocol defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. Language of the web: - Protocol used for communication between web server and web browser TCP port 80 Used to access data on www
http
has 7 characteristics: 1- application level 2-request/respond 3-stateless 4-bi-directional transfer 5-capability negotiation 6-support for caching 7-support for intermediaries
Uniform
Resource Locator -protocol (http,ftp) -port (usually 80) -directory path to the resource
GET
Web browser
HTTP Transaction
RESPONSE
Web server
The
request message consists of the following: Request line, such as GET /images/logo.png HTTP/1.1, which requests a resource called /images/logo.png from server Headers, such as Accept-Language: en An empty line An optional message body
9 methods indicating the desired action to be performed on the identified resource such as: HEAD, GET, POST, PUT, DELETE, TRACE, OPTIONS, CONNECT, PATCH.
Define
GET HEAD
Retrieves the resource. Retrieves the header information of a resource. Creates a new resource. Updates a resource. Deletes a resource. Queries a resource to find out what HTTP operations can be performed on the resource.
POST PUT DELETE OPTIONS
Browser
send a HTTP GET command to request web page form a server. Request consist of: 1- single line text begin with keyword GET 2- URL 3- HTTP version no.
Status
codes are used in response message. It·s a 3 digit no. Some common status codes are: 200 - the server successfully returned the page 404 - the requested page doesn't exist 503 - the server is temporarily unavailable
Used
to transfer information from web servers to web browsers. of the most widely used protocol for transferring information on the internet
One
protocol
for exchanging files over the Internet. FTP works in the same way as HTTP for transferring Web pages from a server to a user's browser. protocol used to upload files from a workstation to a FTP server or download files from a FTP server to a workstation.
Stands
for Hyper Text Transfer Protocol defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. Language of the web: - Protocol used for communication between web server and web browser TCP port 80 Used to access data on www
http
has 7 characteristics: 1- application level 2-request/respond 3-stateless 4-bi-directional transfer 5-capability negotiation 6-support for caching 7-support for intermediaries
Uniform
Resource Locator -protocol (http,ftp) -port (usually 80) -directory path to the resource
GET
Web browser
HTTP Transaction
RESPONSE
Web server
The
request message consists of the following: Request line, such as GET /images/logo.png HTTP/1.1, which requests a resource called /images/logo.png from server Headers, such as Accept-Language: en An empty line An optional message body
9 methods indicating the desired action to be performed on the identified resource such as: HEAD, GET, POST, PUT, DELETE, TRACE, OPTIONS, CONNECT, PATCH.
Define
GET HEAD
Retrieves the resource. Retrieves the header information of a resource. Creates a new resource. Updates a resource. Deletes a resource. Queries a resource to find out what HTTP operations can be performed on the resource.
POST PUT DELETE OPTIONS
Browser
send a HTTP GET command to request web page form a server. Request consist of: 1- single line text begin with keyword GET 2- URL 3- HTTP version no.
Status
codes are used in response message. It·s a 3 digit no. Some common status codes are: 200 - the server successfully returned the page 404 - the requested page doesn't exist 503 - the server is temporarily unavailable
Used
to transfer information from web servers to web browsers. of the most widely used protocol for transferring information on the internet
One
protocol
for exchanging files over the Internet. FTP works in the same way as HTTP for transferring Web pages from a server to a user's browser. protocol used to upload files from a workstation to a FTP server or download files from a FTP server to a workstation.
