What is the 'waid' parameter in the Spotfire Web Player URL?

What is the 'waid' parameter in the Spotfire Web Player URL?

When opening an analysis file in Spotfire Web Player, we see the 'waid' parameter in the Web Player URL.

Example:

• http://MySpotfireWebPlayer/SpotfireWeb/ViewAnalysis.aspx?file=/MyFolder/MyAnalysis&waid=b2ae1bc84b24260146082-201008ae8bc346

"waid" stands for "Web Analysis ID". Every analysis instance opened by a user in the Web Player gets a unique ID (waid). The "waid" is a dynamically generated unique ID for every instance of the analysis file in your browser.

This is how the server knows which instance is open and can keep track of several instances of the analysis file open at the same time. A waid is created when an instance of a file is opened by a user in a specific session. At this point, it is assigned the waid. This unique ID (waid) is valid until the file is closed. As the "waid" is a dynamically generated unique ID, it generates a new and dynamic unique ID every time a file is opened. It will get assigned a new waid even if it was opened by other users earlier or even opened by the same user within the same login session.

The waid value should not be reused in the link when using it on external sites, since the waid is only valid for one file instantiation, and is only valid until that instance is closed. This means that the waid cannot be reused. When using a URL to share a report, the proper URL to share is the URL without the waid parameter. 

Example:

http://MySpotfireWebPlayer/SpotfireWeb/ViewAnalysis.aspx?file=/MyFolder/MyAnalysis