Http listener to a thrid party post through url

Question

hi,
I am  relatively new to using http and the web service.
I wish to know
i. how to create a web service with a output variable (either string or xml) and
ii. then use a seperate VI to read the variable, written by http post (by third party, could be even through a browser).
I have seen the function generator demonstration, specifically the math addition example. and for reading back the xml content I use the datasocket read VI with the [text] parameter, however, this would return the current values passed from the labview through the entire URL and not the one which was sent by the browser (Internet Explorer)
Hope the explanation is clear.
Do reply in case of more detail.
Using LabVIEW 2009.
Thanks in Advance.
Narayanan

Answer 1

Hi,
Thanks for the response.
Just to describe in detail, I have seen the Function Genertor Web service Demo.
On this we have a URL mapping of the xml data as:
/data/:Amplitude/:Frequency/:Noise/ignal
and when i use the http client GET.vi to read back the data then the same is displayed appropriately using (attached sub vi) ReadURL.vi
Now, I have couple of queries here,
i. Where is the dynamic data to the URL posted from?
ii. If i post the data directly to a variable say :A or :B (in case of Add example) through Web Browser http post, then how do i read the value of the same variable in labview?
Note: May need to install the "http client Installer" for loading the attached ReadURL.vi.
Regards,
K.Narayanan
Hope this is
Attachments:
ReadURL.vi ‏11 KB