Page 268 - DCAP408_WEB_PROGRAMMING

Web Programming

Notes Download location: www.easywebload.com
Jblitz Pro
JBlitz Pro is a multi-threaded, multi-page Web site stress and load test tool. It exercises
critical pathways on your site using hundreds of threads to simulate multiple concurrent
users.
Features include cookie support, performance monitoring, auto error detection, fine-
grained thread control, built-in logging, error string searching, graphing and thread activity
display.

HTTP request headers are fully configurable, and you can view returned Web pages along
with their headers. The program is fine for resilience testing dynamic sites with CGI, ASP,
JSP, database access, etc.
Filesize: 7796 KB
Platform: Windows (All)
Download location: www.clanproductions.com

Web Roller
Web Roller is a load-testing tool that provides a consistent and reliable way to test and
learn about performance characteristics of Web and Intranet applications before putting
them on the market.
It records real-time user activity in terms of HTTP requests and creates a simple script, that
you can modify using embedded test data generating capabilities. You can set various
parameters and then run script or a batch of scripts and test performance.
Filesize: 1219 KB

Platform: Windows NT/2000/XP
Download location: www.webapplicationstesting.com

11.4 Summary

 A request header is a single line of text that browser sends to the web server when
requesting to view any web page. When the server sends back the requested web page to
the client, it also sends a set of headers, known as response headers. Response headers are
additional bits of information about the web page being sent to the client. Both the request
headers and the response headers are referred to, more generally, as HTTP headers.

 Some of the standard HTTP headers include HTTP_ACCEPT, HTTP_ACCEPT_LANGUAGE,
HTTP_CONNECTION, HTTP_HOST, HTTP_USER_AGENT, HTTP_REFERER,
HTTP_COOKIE
 Using ASP, one can read the headers that the browser sends to the web server using the
request object. Specifically, the use of the server variables is collections of the request objects.

 Environmental variables are bits of information that the web server makes available to
any program that requests them. Environmental variables contain information such as
the name of the web server, the URL of the currently processing ASP page, or the name of
the name of the web server software being used.
 The commonly used Environmental Variables are URL, Path_info, Path_translated,
Appl_physical_path, Query_string, Server_name, Server_software

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