Notify server to client via Web service

Question

I made a WebService chat. At the client side I am running a thread to check periodically if there any new messages available.

I want to know is there are any way to notify clients via Web Service.

I found something call 'Solicit Response' related to web service. But I am not aware how it works.

Any help is appreciated. Thank you

Answer 1

In web services, the clients strictly request, they don't listen. What you need is some way for the server to "push" to the client. You're looking for something like Comet which isn't part of a web service per se.

Edit

Here's a relevant stackoverflow discussion.