Hi,
Is it possible to let a ASP.NET server call a client when something specific happens?
In my case I have one or more VB.Net client programs that will connect to a ASP.NET webserver. Normally these clients will request somthing to the server, eventually with a result. But in some cases, I'd like to inform the a specific client (or all clients) when eventX happens. Like passing a callback function to a DLL.
To be more specific, the server will monitor lots of hardware devices that communicate through ZigBee. Let's say if a particular sensor switches off, I'd like the server to pass that message to the client application(s) that are visualizing the sensor conditions.
I could let the clients poll the server of course, but it would be a waste of energy since there are no messages 99,9% of the time.
Regards,
Rick
Is it possible to let a ASP.NET server call a client when something specific happens?
In my case I have one or more VB.Net client programs that will connect to a ASP.NET webserver. Normally these clients will request somthing to the server, eventually with a result. But in some cases, I'd like to inform the a specific client (or all clients) when eventX happens. Like passing a callback function to a DLL.
To be more specific, the server will monitor lots of hardware devices that communicate through ZigBee. Let's say if a particular sensor switches off, I'd like the server to pass that message to the client application(s) that are visualizing the sensor conditions.
I could let the clients poll the server of course, but it would be a waste of energy since there are no messages 99,9% of the time.
Regards,
Rick
