Incorrect Number of Web Connections When Using Internet Explorer Primary Software: LabWindows/CVI Add-ons>>Enterprise Connectivity ToolsetPrimary Software Version: 1.0.1 Primary Software Fixed Version: N/A Secondary Software: N/A
Problem: I am hosting my user interface on a web page with the LabWindows/CVI Internet Toolkit. I try to monitor how many clients are connected to my web page with the INET_NumWebConnections function, but this function returns an inconsistent number of web connections. Why is this function not returning stable values? Solution: Internet Explorer only supports Client Pull updates as documented in the following MSDN Knowledge Base. With the Client Pull mechanism, clients connect to the server, receive updates, and immediately disconnect from the server. In client pull, HTTP connections are never held open; rather, the client is told when to open a new connection, and what data to fetch when it does so. Therefore, the INET_NumWebConnections function may seem to return unstable results if you are using Internet Explorer since at any given time, you might not have the same amount of open connections as you have clients. Related Links: MSDN: Server Push Animation Not Supported in Internet Explorer Attachments:
Report Date: 02/28/2005 Last Updated: 03/07/2005 Document ID: 3IREI2K7 |
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