Http request and http response

Mar 11, 2017Download as pptx, pdf3 likes3,578 views

Nuha Noor

Handling Http Request and Response in servlets and details about user authentication using mysql database

HTTP REQUEST AND
HTTP RESPONSE
BY
SANA MATEEN

HTTP REQUEST
• HTTP (Hypertext Transfer Protocol) is perhaps the most popular
application protocol used in the Internet (or The WEB).
• HTTP is a stateless protocol. In other words, the current request does
not know what has been done in the previous requests.
• Whenever you issue URL from your browser to get a web resource using
HTTP, the browser turns the URL into a request message and sends it to
the HTTP server. The HTTP server interprets the request message, and
returns you an appropriate response message, which is either the
resource you requested or an error message.

Important header information
Accept This header specifies the MIME types that the browser or other
clients can handle. Values of image/png or image/jpeg are the
two most common possibilities.
Authorization This header is used by clients to identify themselves when
accessing password-protected Web pages.
Content-Length This header is applicable only to POST requests and gives the
size of the POST data in bytes.
Methods to read HTTP Header:
There are following methods which can be used to read HTTP header in your servlet
program. These methods are available with HttpServletRequest object.
Enumeration getHeaderNames()
Returns an enumeration of all the header names this request contains
String getHeader(String name)
Returns the value of the specified request header as a String.

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The use of huge quantity of natural fine aggregate (NFA) and cement in civil construction work which have given rise to various ecological problems. The industrial waste like Blast furnace slag (GGBFS), fly ash, metakaolin, silica fume can be used as partly replacement for cement and manufactured sand obtained from crusher, was partly used as fine aggregate. In this work, MATLAB software model is developed using neural network toolbox to predict the flexural strength of concrete made by using pozzolanic materials and partly replacing natural fine aggregate (NFA) by Manufactured sand (MS). Flexural strength was experimentally calculated by casting beams specimens and results obtained from experiment were used to develop the artificial neural network (ANN) model. Total 131 results values were used to modeling formation and from that 30% data record was used for testing purpose and 70% data record was used for training purpose. 25 input materials properties were used to find the 28 days flexural strength of concrete obtained from partly replacing cement with pozzolans and partly replacing natural fine aggregate (NFA) by manufactured sand (MS). The results obtained from ANN model provides very strong accuracy to predict flexural strength of concrete obtained from partly replacing cement with pozzolans and natural fine aggregate (NFA) by manufactured sand.

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Http request and http response

1. HTTP REQUEST AND HTTP RESPONSE BY SANA MATEEN

2. HTTP REQUEST • HTTP (Hypertext Transfer Protocol) is perhaps the most popular application protocol used in the Internet (or The WEB). • HTTP is a stateless protocol. In other words, the current request does not know what has been done in the previous requests. • Whenever you issue URL from your browser to get a web resource using HTTP, the browser turns the URL into a request message and sends it to the HTTP server. The HTTP server interprets the request message, and returns you an appropriate response message, which is either the resource you requested or an error message.

3. Important header information Accept This header specifies the MIME types that the browser or other clients can handle. Values of image/png or image/jpeg are the two most common possibilities. Authorization This header is used by clients to identify themselves when accessing password-protected Web pages. Content-Length This header is applicable only to POST requests and gives the size of the POST data in bytes. Methods to read HTTP Header: There are following methods which can be used to read HTTP header in your servlet program. These methods are available with HttpServletRequest object. Enumeration getHeaderNames() Returns an enumeration of all the header names this request contains String getHeader(String name) Returns the value of the specified request header as a String.

6. HTTP GET REQUEST

9. HTTP POST REQUEST

Http request and http response

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