Here I have given a details description of loadrunner recording option. I created it when I was just started learning the HP loadrunner tool. Here I have described every options under recording option and what will be the recorded script after enabling or disabling any option.

1. Beginner’s guide
Different options and their details of RECORDING OPTION of loadrunnervugen 11
At first I describe how to reach up to the recording option then I will explain further.
• Step 1
Open Virtual User Generator from the start
Figure 1: Open Vugen from start (for win7)
• Step 2
Then click on File-> new

2. Figure 2: Create new script.
• Step 3
Here I have selected web (HTTP/HTML) protocol, after selected it click on Create.
Figure 3: Selecting the protocol
After clicking on Create you get the following page.

3. Figure 4: After selecting the protocol as Web(HTTP/HTML)
• Step 4
Now to record a script you have to click on Start Recording.
Figure 5: Click on Start Recording
After clicking on Start Recording you will get the Start Recording options which is,
Figure 6: Default Start Recording options
Now I will explain each and every options here. Specially the “Options…” part.
• Application type
There are 2 options of application type, which are,
Figure 7: Options of Application Type

4. Most of time we use the option Internet Application, When we choose Internet Application the options that we get is
same as Figure 6. But when we select Application type as Win32 App we will get something like below,
Figure 8: Options after choosing Win32 Application
Details of Win32 Applications
Windows Socket Vusers records a Win32 applications. When we want to test a desktop application then we choose
Win32 Application option. Even you will be able to record a simple VB application.
1. Program to record:
You can browse any .exe or.com file in this part. Just make sure that the application you have entered is a Win32
application. Otherwise it won’t work.
2. Program arguments:
Enter the command line arguments for the EXE file specified above; e.g. if we specify "abc32.exe"with the
command line options "genius@xyz", it connects the user Geniusto the server "xyz"when starting
"abc32.exe".
3. Working directory:
Here you just have to provide the specific working directory where you want to work.
4. Record into Action:
Here you just have to select that where you want to record your script whether it is in the Vuser_int or the
Action or in the Vuser_end
Figure 9: Options of Record the application
5. New…
When you click on New..you will get a new small window as below,

5. Figure 10: Creating new Action
Actually New..is use for creating a new Action, within which the new Scripting will be recorded. After
providing a name to in place of Action2 it will be like,
Figure 11: After creating new action
6. Record The application startup
When we want Vugen to record application startup then we enable the “Record the application startup”. When
we do not want Vugen to record the application startup then we clear the box. If you did not got the clear idea
then may be this example will help you.
At first I am recording a small script while enabling the Record the application startup option. Then the
recorded script will be like figure 12. See that the web_url() function is there.

6. Figure 12: Script after enabling Record the application startup
Now I am recording the same page with disabling the record the application startup option. When you will
disable this option and start recording then the application will launch but initially you will not get the recording
option. Instead of that you will get Recording Suspended Dialogue box like below.
Figure 13: Recording suspended option.
So until you click on Record in the Recorded Suspended option you can navigate through any page of your AUT
(Application Under Test) but nothing will be recorded. And after clicking on Record and completing your
desired transaction you will get the recording of your desired pages. No startup page will be recorded. The
example is given below in Figure 14. You can understand from the below code that the web_url() function for
the startup of the application is not recorded in the script.

7. Figure 14: Recorded script after disabling the Record the application startup.
7. Options…
Now if you click on Options..then you will get a window like below.
Figure 15: recording option
This is the exact same window that you will get when you will select Internet Application in the Application
type recording option. I will discuss this Recording options individually later at the time of discussing Internet
Application.
o Details of Internet Application

8. As I already said that Internet option is mostly used as most of the testers are asked to test a new website which
is about to launch. So when you will select the Application type as Internet Application you will get the options
like below,
Figure 16: Options after choosing Internet Applications
1. Program to record:
Here I have written As “Microsoft Internet Explorer”, or you can browse the path from program file like below,
then also you will get Microsoft Internet Explorer as written in the Program to record section.
Figure 17: Browsing Internet Explorer
2. URL Address:
In this field you have to give the URL that you want to open. You can give www.google.com or anything that
you want. But providing any site here is a risky factor if you are planning to record a script more than one times.
Coz after recording several times the server of that particular website may block you. For that reason Vugen has
a sample application as Web Tours for practice purpose. So here I have given that URL of the Web Tours.
Before working with the HP Webtour Application you have to start the web server.You can start the web server
by following process,
Start->All programs->HP LoadRunner->samples->Web->Start Web Server

9. Figure 18: Process to Start Web server
After you click on Start Web Server You will get a window like below,
Figure 19: Web Server of Web Tours
Now you have started the Web Server and after you got this window it will then disappear within 2-3 secs. But if
you need to close the server you can't just close it, by click on the cross, coz this command prompt is gone. So if
you want to turn off the server all you have to do is open task manager, then click on the processes and select
xigui32.exe process, then end task. Closing this will stop your web server.

10. Figure 20: Selecting xigui32.exe fromTask manger
You will get the URL from the below steps,
Start->All programs->HP LoadRunner->samples->Web->HP Web Tour Application
After Clicking on HP Web Tour Application your default browser will open the following,
Figure 21: Opening web Browser
Now just Copy the URL and paste it in URL Address part.
3. Working Directory
Same as Win32 Application
4. Record into Action
Same as Win32 application
5. New
Same as Win32 Application
6. Record the application startup

11. Same as Win32 Application
7. Options…
In the Recording Options there are 4 general parts which are,
General, Data Format Extension, network, HTTP Properties. Within these options there are different sub-options
also. Here I will discuss all the options and their detailed description.
i. Script
When you click on script we will get a window like Figure 15.
Here the 1st
option is Scripting Language, which is for Vugen 11 is by default C. The scripting language for
loadrunner is C. But for the later version like 12.5 you will get C and Java both as options.
Then Comes the Scripting options, where the Properties and their values are given. By default some of the
property options are selected previously as shown in the figure 15. Here I am discussing all the properties in
details
Close all AUT processes when recording stops
Automatically closes all of the AUT's (Application Under Test) processes when VuGen stops recording. Means
checking this automatically closes all of the application that has been opened for recording when VuGen stops
recording
Default value: disabled.
So did you understand the point?? If yes then GOOD. If no then record a small script in web tours while
disabling this option. So after you are completed recording the script and you have hit the stop button to stop the
script from recording you will see that the Web tour is still opened in the browser as you left working with it.
Like this-
Figure 22: Result after disabling the “Close all AUT processes when recording stops”
Here to show the result I have stopped the recording after clicking on flights so in IE browser web tour is opened
as the last transaction which is done.
So now if I enabled it then after recording is completed the browser will automatically close this site.
Generate fixed think time after end transaction
Adds a fixed think time, in seconds, after the end of each transaction. When you enable this option, you can
specify a value for the think time.
Default value: disabled, 3 seconds when enabled.
When you enabled it and provide any specific think time then the result will be something like Figure 24.

12. Figure 23: Enabling think time as 7 secs
Figure 24: Change in the script after Enabling
Generate recorded events log
Generates a log of all events that took place during recording.
Default value: disabled.
If we enabled it then you will get a recorded event log in the output windows

13. Figure 25: Recorded event log is shown in the output window
Generate think time greater than threshold
Before understanding this option you have to understand what is think time and threshold. So let’s start with
think time,
Think time: Think time is the time taken by the users to think or to navigate
to different pages in the application. Depending upon the application context, the think time would vary. It's not
advisable to have the default think time for all applications under testing. Example-If after opening any site I had
taken 12 secs to provide my username and password. After providing the username and password I checked
whether the username and password is correct or not. That takes 5 secs more. Then I clicked on the login button
which is my next transaction so my total think time for after opening the site to before login is (12+5)=17 sec.
Think time plays a major role in testing as a real life user. Think time creates a huge impact on the server load.
We need to understand the fact that decreasing the think time will increase the server load & vice versa. Never
forget that we can play around with the server load just by changing the think time. To illustrate, consider the
following example. Five tests were conducted with 5 virtual users simultaneously accessing the application. In
each of the test, the think time is the only metric which was changed.
So from this table you can understand that when think time is less that time server load and CPU usage is more.
Threshold:Threshold level is the level below which the recorded think time will be ignored. So if I enable the
option “Generate think time greater than threshold” and/or change the value, then all the think time within the

14. script will be ignored. If you are still confused about what I meant as Ignored then come to this given example
below.
Let’s think that you have given it as 30 sec. and recorded a script. So the 1st
transaction you have done in 5 sec
2nd
in 10 sec and the last one in 40 sec. So when you will see the recorded script you will find only one think
time there in only one transaction. Guess at which transaction it will be??
Yes. It is only in the 3rd
transaction. Let’s see the script that I have recorded here for this example.
Figure 26: When “Generate think time greater than threshold” is 30
I can assure you that there is no other lr_think_time() is there. Now what happens when I change the Generate
think time greater than threshold to 3sec.

15. Figure 27: Same recorded script after providing think time as 3.
So you understand the difference. I think now you can understand what “Generate think time greater than
threshold” do.
Maximum number of lines in action file
It means that the maximum number of lines VUGen will generate in an action. If the script is larger, VUGen will
automatically create a new action. The default is set to 60,000. The maximum value which can be specified is
65,000. And the minimum value is 5000.
Track Processes created as COM local servers
Before knowing about this option you have to understand what is COM. COM means Component Object Model.
COM is a platform-independent, distributed, object-oriented system for creating binary software components
that can interact. COM objects can be created with a variety of programming languages. Object-oriented
languages, such as C++, provide programming mechanisms that simplify the implementation of COM objects.
These objects can be within a single process, in other processes, even on remote computers. COM is designed to
make it possible to add the support for location transparency that extends across a network. It allows
applications written for single computers to run across a network and provides features that extend these
capabilities and add to the security necessary in a network.
Now as we got a basic idea about COM so we can now move on to COM local Server. A COM client is
whatever code or object gets a pointer to a COM server and uses its services by calling the methods of its
interfaces. A COM server is any object that provides services to clients; these services are in the form of COM
interface implementations that can be called by any client that is able to get a pointer to one of the interfaces on
the server object.
Did you understand about COM server? If not then just remember that COM local server is same as any local
server but here it interacts with the client machine using objects.
So when we enable the option “Track processes created as COM local servers” To let VuGen COM/DCOM
recorder to know about what objects you are interested in recording. The purpose of listing all necessary objects

16. here in the filtering option is to enable the recorder to read the type information about the object, so that it would
monitor the creation of such objects and all activities done by the objects. Finally, after the recording, the
recorder could generate appropriate script for all the activities trapped.
Now we can move to the next sub-option in General option which is Protocols.
ii. Protocols
Do you know what Protocols is?? If you know then well and good but if don’t then you might be interested in
this next paragraph.
The dictionary meaning of Protocol is agreement, treaty, convention, deal, pact, settlement etc. That means it is
a system of rules agreed by both the parties. So in Information Technology terms Protocol means a uniform set
of rules that enable two devices to connect and transmit data to one another. Protocols determine how data are
transmitted between computing devices and over networks. They define issues such as error control and data
compression methods. The protocol determines the following: type of error checking to be used, data
compression method (if any), how the sending device will indicate that it has finished a message and how the
receiving device will indicate that it has received the message. Internet protocols include TCP/IP (Transfer
Control Protocol/Internet Protocol), HTTP (Hypertext Transfer Protocol), FTP (File Transfer Protocol), and
SMTP (Simple Mail Transfer Protocol).
When you click on protocols you will get options like this below.
Figure 28: List of Protocols under protocols option.
Now you can ask a question that what is the important of this option? You have already selected the protocols
when you are creating the script (refer to figure 3 for understand). See this option will come handy when you are
working with multiple protocols. For example if instead of selecting new single protocol script if I selected new
multiple protocol script before (refer figure 3) then figure 3 will become,

17. Figure 29: selecting multiple protocols.
Here I have selected only 3 protocols. So now if I go to the Protocols option of Recording option then it will be,
Figure 30: list of active protocols in Protocols list.
Now you can check or uncheck any protocols from here as you required.
Let’s say that you are regenerating the same script but you want some of the specific protocol to be enabled this
time. So you can just check only your specific protocols from here, and you will get your desired regenerated
script.
iii. Recording
This option is one of the most important options of Recording Options. Whenyou open this you will get a
window like below,

18. Figure 31: Options under General: Recording
There are 2 options, HTML-based script and URL-based script. I will discuss them one by one. But before that
you have to understand why you should go for HTML-based script or URL-based script.
1. HTML based mode does recording as you perform clicks and doesn’t give you inside information like what
is happening behind the recording while URL based mode records each and every step and emulate
Javascript code.
2. HTML mode would have less correlation to do while URL mode has much more complex correlation
requirements.
3. HTML mode is smaller and is more intuitive to read as the statements are inside the functions
corresponding to the user action performed. In the case of URL based, all statements gets recorded into
web_url().
4. HTML mode is recommended for browser applications while URL mode is recommended for non-browser
applications.
5. Don’t get the impression that I am advocating for HTML mode ☺ . URL mode can be of real help when
you want to have control over the resources that need to be or need not to be downloaded, since you have
each and every statement in-front of you.
HTML-based script
When you will click on HTML Advanced… you will get a window like below,

19. Figure 32: Options under HTML Advanced..
The 1st
option is Script type which has another two options. I am discussing each options one by one.
A script describing user actions (e.g. web_link,web_submit_form):
Example: look at the following recorded script which is generated after enabling this option,
Figure 33: Recorded script after enabling “A script describing user actions”
When you check this option and start recording, Vugen generates functions for all the actions done during the
process of recording. Functions are generated corresponding to the actions.

20. If user open/request a web page web_URL function is generated
If user clicks on any links on the page web_link function is generated.
If user clicks on any image links on the page then web_image is generate.
If user clicks on any submit button on the page then web_submit_form function is generated
A script containing explicit URLs only (e.g. web_url,web_submit_data):
This mode is useful for instances where many links within your site have the same link text. If you recorded
using the first option, it records an instance for the link, but if you record using this option then each link is
listed by its URL. This facilitates parameterization and correlation for that step.
Figure 34: Script recorded using “A script containing explicit URLs only” option
The 2nd
option is Non HTML generated elements (e.g. Javascript, VBScript, ActiveX, Applets) type which has
another three options. I am discussing each options one by one.Using this options we can control Non HTML
generated elements.
Record within the current script step:
When this option is enabled new functions are not generated for non-html resources. They become part of
web_url, web_link and web_submit_dataetc functions. These non-HTML resources are indicated by EXTRAS
flag.
Need to be
parameterized
Need to be
correlated

21. Figure 35: Script recorded after enabling “Record within the current script step”
Record in separate steps and use concurrent groups:
When this option is enabled then all the non-html elements are recorded as new functions. All of the web_url
functions for non-html resources are placed in a concurrent group within web_concurrent_start and
web_concurrent_end.
Non-html
resources
Non html
resources

22. Figure 36: Script recorded after enabling “Record in separate steps and use concurrent groups”
Do not record:
Enabling this will instruct Vugen not to record any of the non-html resources. In the below image you can see
that none of the non-html resources have been recorded. That means here is no functions related to body_bg.gif
or banner_bg.jpg
Figure 37: Script recorded after enabling “Do not record”
URL-based script
When you will click on URL Advanced you will get a window like below. I will discussed each options now.
Figure 38: Options within Advanced URL

23. Create concurrent groups for resources after their source HTML page:
This option instructs to record URLs and their resources in concurrent groups. A concurrent group represents
links and resources that are loaded on a page at the same time.
Figure 39(a): all the .aspx requests are in a particular concurrent group
Figure 39(b): All the image(.png/.jpg) and .js(java script) requests are in a particular group
Use web_custom_request only:
This option instruct to record all the contents under web_custom_request function.
Existence
of .aspx
files
Existence of
image and .js
files

24. Figure 40: Script recorded after enabling “Use web_custom_request only”
If you enable both the option then all the URL and their resources will be recorded in a concurrent group but
under web_custom_request function.
Figure 41: when both the options are enabled.
Under Data Format Extension there are Configuration, Header chain, Body Chain, Cookies Chain, Query String
Chain. At first I will discuss what the work of Configuration option is.
Under the Configuration option you will see options like below,
Recorded under
web_concurrent_re
quest

25. Figure 42: Configuration option
Enable Data Format Extension enables easier scripting of web applications by providing the ability to decode
and encode formatted data that is exchanged between the client and the server. This enables easier correlation
and parameterization of the generated Vuser scripts.
You may find this following website very useful about this.
http://claudihome.com/html/LR/WebHelp/Content/VuGen/c_web_data_format_extensions.htm
When you record a Vuser script, VuGen records the HTTP requests and responses that are passed between the
client and the web server. The data in these HTTP requests and responses is often encoded. For example, some
of the data may be in binary format. The encoded data may be in the HTTP query string, headers, body, or
cookies. When the encoded data is included in a Vuser script, the resulting script will contain data that is
difficult to decipher. This makes it difficult to identify text strings that can be used for parameterization and
correlation.
The script below (Figure 43) shows a section of a Vuser script that was generated while recording business
processes on a GWT-based application. Notice how some sections of the script contain encoded data and
therefore difficult to decipher.
LoadRunner uses data format extensions (DFEs) to resolve the difficulties that arise from encoded data in Vuser
scripts. DFE support allows easier creation of Vuser scripts by providing the ability to decode the encoded data
that is exchanged between the client and the server. By providing the decoded format of the data, the
information is presented in the Vuser script in a readable format that enables you to correlate and parameterize
the script as required. When the script is replayed, the DFE support re-encodes the modified Vuser script, and
enables the Vuser to send the correctly encoded request to the server.

26. Figure 43: Example of encoded data that is exchanged between the client and web server
When a DFE is applied to a Vuser script and the script is then regenerated, the DFE modifies the script and
replaces the encoded data with decoded data.
If you want to do it by yourself then here is a list of websites which uses DFE’s of type GWTs (Google web
tookit).
• http://wallet.google.com
• https://www.google.com/flights/
• https://www.google.com/cars
• https://play.google.com/apps/pub...
• https://www.google.com/about/job...
• http://adwords.google.com/
• http://bibale.com/
• http://bookedin.net/
• http://chrome.angrybirds.com/
• http://drawmics.com/
• http://engage.calibreapps.com/
• http://engagiert-in-deutschland.de/
• http://envolve.com/
• http://evernote.com/
• http://ghostnest.com/
• http://netsas.com/
• http://opennetworx.org/
• http://rstudio.org/
• http://seesmic.com/app
• http://www.squidjob.com/
• http://tasktop.com/blog/tasktop/...
• http://vchub.com/
• https://agreedo.com/
• https://apps.facebook.com/friend...
• https://clarityaccounting.com/
• https://google.com/webfonts/v2
Apart from configuration all the other options are not used vastly. So I am skipping then and directly discussing
to the Network. Under the Network option there is only one option which is Port Mapping. Before going into

27. any details first you have to understand what Port Mapping actually does. If you know what is port then you can
skip the next paragraph, but if you don’t know then you may find this interesting.
A port number is a way to identify a specific process to which an Internet or other network message is to be
forwarded when it arrives at a server. For the Transmission Control Protocol and the User Datagram Protocol, a
port number is a 16-bitinteger that is put in the header appended to a message unit. This port number is passed
logically between client and server transport layers and physically between the transport layer and the Internet
Protocol layer and forwarded on. For example, a request from a client (perhaps on behalf of you at your PC) to a
server on the Internet may request a file be served from that host's File Transfer Protocol (FTP) server or
process. In order to pass your request to the FTP process in the remote server, the Transmission Control Protocol
(TCP) software layer in your computer identifies the port number of 21 (which by convention is associated with
an FTP request) in the 16-bit port number integer that is appended to your request. At the server, the TCP layer
will read the port number of 21 and forward your request to the FTP program at the server.
Examples include:
• 21: File Transfer Protocol (FTP)
• 22: Secure Shell (SSH)
• 23: Telnet remote login service
• 25: Simple Mail Transfer Protocol (SMTP)
• 53: Domain Name System (DNS) service
• 80: Hypertext Transfer Protocol (HTTP) used in the World Wide Web
• 110: Post Office Protocol (POP3)
• 119: Network News Transfer Protocol (NNTP)
• 143: Internet Message Access Protocol (IMAP)
• 161: Simple Network Management Protocol (SNMP)
• 194: Internet Relay Chat (IRC)
• 443: HTTP Secure (HTTPS)
• 465: SMTP Secure (SMTPS)
• 8443: Router remote access
The default setting is Socket Level data. The Socket Level API and WinINet API are two different types of
filters.LoadRunner can record the data on the either/both filters. While not all application use WinInet API, so if
the application does not use WinInet API, the WinInet recording can record nothing. All application will use
WinSock API, so theoretically Socket level data recording should work for all kinds of applications.
Actually this frame should be left intact. If you’re recording a desktop application, then you may have to
choose WinINet level data.Most of the application though communicate at the socket level and the events get
recorded by loadrunner using socket level data capture. But, sometimes the applications are designed to interact
using WinINet API and in such cases we should use WinINet level capture in loadrunner, to capture the events
successfully. So, the use of socket level/WinINet level capture depends on how the application communicates.
Note: The requests might get duplicated if you are using socket level and wininet level data capture and you can
comment the duplicated requests in the script.
Now if you click on Options while selecting the Socket level data then you will get a dialog-box like below,

28. Figure 44: Options under Socket level data
SSL (Secure Sockets Layer) is the standard security technology for establishing an encrypted link between a
web server and a browser. This link ensures that all data passed between the web server and browsers remain
private and integral. SSL is an industry standard and is used by millions of websites in the protection of their
online transactions with their customers.
Enable auto SSL detection:
Automatically detects SSL communication. Specify the version and default cipher that you want to detect. Note
that this only applies to port mappings that were defined as auto in the Connection type box, or not defined at
all. If a server, port, or server:port combination was defined as either Plain or SSL, then auto SSL detection
does not apply.
Here you can select SSL2/3 (means both SSL2 and SSL 3 is included) SSL 3.x (means both SSL 3.0 and SSL
3.1 will be captured), SSL2.x (means SSL2.0 version), TLS1.x (means any version of TLS1.0, TLS 1.1, TLS 1.2
and TLS 1.3). You can wonder that why there is no SSL1.x. actually SSL1.0 version was never publicly released
because of the serious security flow in the protocol.
TLS means Transport Layer Security which is the new name of SSLs from SSL 3.1. TLS and SSL are protocols
that provide data encryption and authentication between applications and servers in scenarios where that data is
being sent across an insecure network.
A SSL cipher is an encryption algorithm that creates a special certificate, which is used as a key between two
computers on the Internet. This certificate creates a secret encrypted connection between the two networked
computers, which blocks unwanted snooping of shared data.
Enable auto detection of SOCKET based communication
Automatically detects the type of communication. If required, raise the maximum number of transitions, one at a
time until VuGen succeeds in detecting the protocol. You can also gradually increase the maximum buffer size
by 1024 bytes (1 KB) at a time until VuGen succeeds in detecting the protocol. This allows VuGen to review a
larger amount of data in order to find a signature.
Log Level
Sets the logging level for the automatic socket detection.
When you will Click on New Entry you will get a window like below,

29. Figure 45: Server Entry options
Some applications may use ports that are different from the browser. The default HTTP port is 80 by most
application but this may not be used by the application that you are recording against. In such situation, you may
need to configure Vugen to capture the HTTP traffic by mapping the ports to the service type. The service type
other than HTTP are FTP, Socket, etc depending on your application needs. In this way, Vugen will become a
proxy and capture traffic on the defined port.
To know more about how Server option works please refer to the following link,
http://community.hpe.com/t5/LoadRunner-and-Performance/The-Port-Mapping-dialog-one-dialog-that-does-it-
all/ba-p/6357353
Under HTTP Properties there are two options Advanced and Correlation. When you open Advanced this
window will come,

30. Figure 46: Options under HTTP:Advanced
I. Reset context for each action
Most of the web applications will have resources (images, shock wave files) and cookies cached when it is
accessed multiple time. Many of the resources will not be requested if it is already cached. If we record the
session without checking this option, Load Runner will not capture the resources. This option is to start the
recording as if it is accessed for the first time.
II. Save snapshot resources locally
Instructs VuGen to save the snapshot resources to files on the local machine. This feature lets the Run-Time
viewer create snapshots more accurately and display them quicker. So in your local machine you will get
some files like below,
Figure 47: Snapshot stored in your local machine
III. Generate web_reg_find functions for page titles
Generates web_reg_find functions for all HTML page titles. VuGen adds the string from the page's title tag
and uses it as an argument for web_reg_find. When you will enable this option your script look like below,

31. Figure 48: Script after enabling “Generate web_reg_find functions for page titles”
IV. Generate web_reg_find functions for sub-frames
Generates web_reg_find functions for page titles in all sub-frames of the recorded page.
Figure 49: web_reg_find is generated for sub frames
V. Add comment to script for HTTP errors while recording
Adds a comment to the script for each HTTP request error. An error request is defined as one that generated
a server response value of 400 or greater during recording. Server Response values are nothing but the

32. values of the numeric status code toHTTPrequests, like Bad request 400, Not found 404, Internal Error 500
etc.So after enabling this option your code will look like below,
Figure 50: Recorded script after enabling “Add comment to script for HTTP errors while recording”
VI. Support charset
UTF-8
This instructs VuGen to convert non-ASCII UTF-8 characters to the encoding of your locale's machine in
order to display them properly in VuGen.UTF-8 is a character encoding capable of encoding all possible
characters in Unicode.Unicode is a computingindustry standard for the consistent encoding, representation,
and handling of text expressed in most of the world's writing systems.
EUC-JP
If you are using Japanese Windows, select this option to enable support for Web sites that use EUC-JP
character encoding. This instructs VuGen to convert EUC-JP strings to the encoding of your locale's
machine in order to display them properly in VuGen.
VII. Record script using earlier recording engine
It enables the recording of a script using the earlier recording engine, instead of the standard multi-protocol
engine. It is useful for the next Vuser script.
If you enable this option then when you will create the next vugen script then you will get web_api.h header
included into your init(), action() and end().
Figure 51:web_api.h included
Even your recording option will also look different, like below,

33. Figure 52:Start Recording option
And the after clicking on options you will get,
Figure 53: Recording option
I am not discussing Headers.. Content Types..and Non-Resources.. as by opening them you can get a clear idea
about them,
The last option is Correlation
If Enable correlation during recording option is enabled and you know all the necessary data about what you
want to correlate then you can correlate them automatically. But if you are a beginner then I will advise you not
to use it now. But for learning purpose you can follow the steps below,
Just click on New Application then give a proper name of the application, then click on new rule and provide the
left and right boundary and all the other necessary information as you need. Here I am only providing the Left
and Right boundary.

34. Figure 54: Correlation option
Now if you click on Advanced then you will get some more options regarding the correlation, like below. For an
example I am keeping the default setting. And the script will be generated like Figure 56.
Figure 55: Advanced correlation properties

35. Figure56: Example of automatic correlation
The option Offset and Length in automatic correlation has the same use as the SaveOffset and SaveLen in
manual correlation. In general term we can say if we specify offset as 5 that means the first 5 digit/alphabet
values will be discarded and then rest value will be saved in the parameter. If we specify Length as 10 then from
a given offset value the next 10 digit/alphabet values will be stored in the parameter. In Figure 57 we have
specified offset as 5 and length as 10 in correlation options (automatic correlation).

36. Figure 57: Script after specifying offset and length.
Note: If you are specifying offset and length then I will suggest you to uncheck the “Replace with parameter
only for exact matches” option. Otherwise automatic correlation will not happen.
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