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LoadRunner 11 has added the AJAX Truclient protocol, and with it new functions for it that are unlike the old C-based functions. As of this writing, there still isn’t an entry in the function reference for the protocol with examples of usage, but only documentation found in the help documentation.

However, recently we found that some of these functions are not correct. HP recently added a new knowledge base article address this:
KM1025315

Problem: When trying to use the following functions in an step “Evaluate JS Read Entire Entry

If you need to create a GUID on the fly for a unique ID, here is some code to do just that. Thanks to Chris Butts for this.

Here is the GUID function. Set this somewhere outside the Action() function to keep it separate.
GUID()
{
lr_guid_gen();
lr_message(“%s”, lr_eval_string(“”));
lr_message(“%s”, lr_eval_string(“”));
}

int lr_guid_gen()
{
typedef struct _GUID
{
unsigned long Data1;
unsigned short Data2;
unsigned short Data3 Read Entire Entry

We have been working with a client for weeks to solve an issue with LoadRunner 9.52 that I am happy to report is now solved.

Problem: After creating a Citrix script in Vugen and getting a successful playback on a local machine, the script would be moved to the LoadRunner Controller to test it out with multiple virtual users. Sometimes the scripts would throw the error, “Failed to retrieve the ICA client Bitmap: Reason: The server threw an exception”. This happened for all ctrx_sync_on_windows functions on all scripts, but onl Read Entire Entry

I was using the stand-alone version of Vugen used with Performance Center 9.5, and I noticed that it would crash every time I tried to create a parameter file.

After some research, I found out it is because SQL Server 2008 was installed on the machine. Apparently, Vugen is doing something that conflicts with the mfc80.dll or mfc80u.dll file used by SQL Server 2008. This problem not only affects Vugen, but other applications as well.

Here is a link to more information on the Read Entire Entry

We have experienced a bug in the LoadRunner 9.52 patch when trying to install on a 64-bit OS. Installing 9.5, and 9.51 works just fine. However, when trying to install 9.52 – it can’t find an existing Loadrunner installation.

After some research, we located this article:

http://www.windowsitpro.com/article/internals-and-architecture/what-s-the-wow6432node-under-the-hkey_local_machine-software-registry-subkey-.aspx

Our theory is that LR 9.52 patch does not realize it is running in a 64-bit environment and probably Read Entire Entry

Note: This blog post was originally published on Loadtester.com as an article. We have re-published here as an effort to retain useful information from that web site after merging with Northway Solutions Group. Some material may be slightly modified to retain relevance.
This week marks a milestone for me personally, as well as for Loadtester as a company. Two years ago, we had an idea to create a utility to be used to make our lives as LoadRunner consultants a little easier. There have been a few stand-alone utilities that have been Read Entire Entry

Web/AJAX Protocol:

KM840444 – Using the Web HTTP/HTML protocol in LoadRunner 9.51 or 9.52, after recording the business process the body portion is missing in the web_custom_request when the script is generated. No error message is displayed in the log files, either during record or replay.

For example, with LR 9.50 the recording of an HTTP POST request to a SAP server generates the following web_custom_request code:
web_custom_request(“runtime_2”,
“URL=http://hostname.domain.org:50000/xxx/yyy/zzzzz”,
“Method=POST”,
“Resource=0 Read Entire Entry

Sometimes you need to strip off the first part of a string because there is some character and/or amount of crap at the end that you don’t need. The most obvious use of this is when you capture an e-mail address as a parameter and the string is like:

giggity@loadfreakintester.com

Let’s say all you need is the “giggity”, and not the rest. If you capture the exact same thing each time, you can just strip off anything after the 7th character. But what if the next time you run the script you captur Read Entire Entry

Issue: While using the lr_load_dll function, the user receives the following error:
“Action1.c(x): Error -19890 : C-interpreter run time error:
Action1.c(x): Error — File error : LoadLibrary(c:\temp\MyDll.dll) failed : The specified module could not be found.”
The error above can occur if the compiler fails to locate or load the DLL. You can check the return code of lr_load_dll to verify if this is the case.

Example code:
//—begin code—//
int x;
x = lr_load_dll(“MyDLL.dll”);
lr_message(“return code = %d”, x);
//—-en Read Entire Entry

The web_convert_param function either converts HTML text to plain text or URL, or converts plain text to URL.

HTML format uses codes for some non-alphanumerical characters, such as & for ampersand. URLs do not support non alpha-numerical characters and use the escape sequence %number, to represent them. To use an HTML value in a URL, you must therefore convert it into an escape sequence or plain text. For example, an ampersand is represented in a URL as %26. When you use this function to convert the HTML to plain text, i Read Entire Entry