Can we create a WCF service which publishes events?

Question

I want to create a push web application.

The service layer is built on WCF.

The presentation layer is built on Asp.net 4

The service listens to events and updates its static property (a shared collection list) from the data layer. I am polling in my presentation layer and calling a method of WCF every second and getting the updated collection.

If a collection is unmodified, I return empty list to save network bandwidth.

To save the round trips, I want the WCF service to publish an event if and when the collection is modified. Is that possible? How do I achieve this?

Thank you

You should have a look at http://en.wikipedia.org/wiki/Comet_(programming) , imho WCF Duplex Communication does not work reliable in internet scenarios (you need a direct line of sight between server and client). — Andreas, Aug 18 '11 at 12:22

score 5 · Accepted Answer · answered Aug 18 '11 at 10:04

5

WCF services allows duplex communication, so it can send messages to client.

answered Aug 18 '11 at 10:04

Vladimir

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score 0 · Answer 2 · answered Aug 18 '11 at 09:38

0

I had been looking for same thing but could not find anything with Push facility in .Net, Then I had to use Flex along with .Net.

You may get start from this reference

answered Aug 18 '11 at 09:38

Munawar

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Can we create a WCF service which publishes events?

2 Answers2