title: How to push messages from API server (PHP/rest) to C# apps
body: <p>I have C# apps requesting data from PHP/MySQL API server (Rest/JSON). Now I also need to push messages to the C# apps when some events occur (form submission from the web site). I searched around, and it seems that COMET, long polling, and http streaming are options. Could you please provide some suggestions on which technology makes sense here, as I am not pushing to a web browser?</p>
  
  <p>In addition, if using HTTP streaming (like twitter streaming API), do I need to keep a table of HTTP connections so I know which connection to use when pushing targeted events (only to certain C# clients)? I am a bit confused, and many thanks!</p>