Open eBay Apps: URL Render POST Data parameters

URL Render Post Data parameters: ST, SIG, SG and IS 

Summary   

   There are two Gadget Content Types: HTML and URL.  Render URL parameters apply to URL Type Gadgets that appear in Canvas or Summary view.

   When  a subscriber clicks the Start button to launch a URL type Open eBay Apps gadget,  the HTTP POST request is sent to the Endpoint URL specified in the deployment descriptor of the Open eBay Apps in question. 

   Some of the parameters are passed in raw Query String:

  'st', 'sig' authenticate parameters and 'is' dynamic resizing parameter are passed via Post Data property as shown below:

    In some web servers,  URL parameters and POST body parameter are saved in the different web server properties. As a result, if you do not use the correct property, you may miss parameters passed in HTTP Post Data. For example, in C#,  System.Web.HttpRequest.QueryString property is used to access the collection of the request URL parameters while System.Web.HttpRequest.InputStream is for reading data of HTTP content body.

  Note. The 'sg' parameter is deprecated and you should not use it.

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