The world wide web http, Computer Networking

Assignment Help:

The World  Wide Web HTTP

The Hyper text Transfer Protocols( HTTP) is a protocols  used mainly to  access data on the world  wide  web. HTTP functions as a carbonation of FTP( File  Transfer Protocols) and SMTP ( Simple  Mail Transfer Protocols). HTTP is  implemented in two programs a  client program  and a server program. The  client program  and server program executing on different end systems talk to each other by  exchanging. HTTP message HTTP defines the structure of these  message  and how  the client and server exchange  the messages.

HTTP defines  how web  clients (f or  example browser ) request  web  page from web  servers and  how servers transfer web page to client. In  figure 3.3 when a user requests a web  page (f or  e, g, clicks on a hyperlink) the  browse sends HTTP request messages for the objects  ( an  objects  is simply a file such as an HTML file a JPEG image are GIF image java applet an audio clip and so on in the page to the server.

HTTP uses TCP (Transmission control  protocols) is  its  underlying transport protocol.  Because TCP provides a reliable data transfer services to HTTP. HTTP consists  of two  types  of massage format request  and response.

2035_The World  Wide Web HTTP.jpg

                                                                   figure HTTP request response behavior

 

The HTTP client first  initiates a TCP connection with  the server. Once the connection is established the browser and the server process access TCP through their socket interface. On  the client  side the socket interface is the door between  the client process and the TCP connection on  the server side it is the door  between  into its  socket interface and receives HTTP response message from  its socket interface. Similarly  the HTTP server receives request message from its  socket interface and sends response message  into its socket interface. Once  the client sends  a message  into its  socket  interface the  message  is out  of the  clients  hands  and is  in the bands of TCP.

HTTP need not worry  about  lost data  or the details of  how TCP recovers from loss  or reordering of data within  the network. That is the job of TCP and the  protocols in the  lower layers  of the protocols stack. It  is important to note  that the server sends  requested files to client without storing any state information about the client. If  a particular client asks for  the same object twice in a period of a few  seconds the server does not  respond by saying that it just  served the object  t the client instead the server resends the objects as it has completely forgotten what  the server  has sent earlier because on HTTP server mantas no information  about  clients HTTP is said  to be  as tasteless protocols.

 

 

 


Related Discussions:- The world wide web http

Calculate the efficiency of stop-and-wait ARQ, Suppose that frames are 1250...

Suppose that frames are 1250 bytes long including 25 bytes of overhead. Also assume that ACK frames are 25 bytes long. Calculate the efficiency of stop-and-wait ARQ (a) Transmits a

Define the tasks for which sns is used, Define the tasks for which SNS is u...

Define the tasks for which SNS is used SNA can be used for the following types of tasks: -  Terminal access to mainframe and midrange computer applications. -  File trans

Routers - network layer and routing , Routers The network  layer (also ...

Routers The network  layer (also  called layer3) manages device  addressing  tracks the location  of devices on the network  and determines  the best  way to  move data. Which

Programming based on message passing, Programming Based on Message Passing ...

Programming Based on Message Passing As we know, the programming model based on message passing uses high level programming languages like C/C++ along with a number of message

What are the benefits of layered network, Q. What are the benefits of layer...

Q. What are the benefits of layered network? Ans: Basic benefits of layered network are given below: -  Complex systems will be broken down into understandable subsystems.

Wireless access - computer network, Wireless Access Wireless access co...

Wireless Access Wireless access connecting end  systems ( that are often  mobile) into the network. Today there are two broad types  of wireless internet access(1) wireless an

Show a simplex stop and wait automatic repeat request, Q. Show a simplex St...

Q. Show a simplex Stop and Wait automatic repeat request? A simplex Stop and Wait ARQ - Normal Operation - Frame lost - Acknowledgement lost - Acknowledgement de

Computer nework critira, what is compurter network and types, topology, com...

what is compurter network and types, topology, communication media

Functions of the information security steering committee, Question: (a)...

Question: (a) Do you agree with the following statements (specify your reasons to support your answer for each):- i) Policies are the foundation for the development of sta

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd