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

What are the various security measures, What are the various security meas...

What are the various security measures A matter of prime concern to companies is the overheads in the form of huge investment on extra hardware and software. It is quite possi

Define osi , OSI= Open System Interconnection.

OSI= Open System Interconnection.

Different technologies involved in establishing wan links, What are the dif...

What are the different technologies involved in establishing WAN links? Analog connections - using conventional telephone lines; Digital connections - using digital-grade telep

Example on TCP numbering, Q. Example on TCP numbering? Envision a TCP c...

Q. Example on TCP numbering? Envision a TCP connection is transferring a file of 6000 bytes. The first byte is numbered 10010. What are the sequence numbers for every seg

What is frequency diversity, What is Frequency diversity Due to the tra...

What is Frequency diversity Due to the transmission is spread out over a larger bandwidth, frequency-dependent transmission impairments, like as noise bursts and selective fadi

What is a computer network, What is a computer network? Computer Networ...

What is a computer network? Computer Network is a collection of distributed intelligent devices that are connected with each other with transmission media for the purpose of da

What is vrc, What is VRC? It is the most common and least costly mechan...

What is VRC? It is the most common and least costly mechanism for Error Detection. In VRC, a parity bit is added to each data unit so that the total number of 1s becomes even f

Determine the difficulties arise with database connectivity, Determine the ...

Determine the Difficulties arise with database connectivity A number of difficulties arise with database connectivity and the company may have to shell out an enormous amount

Determine the names of network installation, Determine the names of Network...

Determine the names of Network installation ? Buying the components ? Cabling the network ? Installation of networking components such as hubs, switches, routers, gateway

Introduction to operating system for parallel computer, INTRODUCTION T...

INTRODUCTION This part discusses the additional requirements at software levels and operating system which will create the parallel programs run on parallel hardware. Collecti

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