I have an Azure hosted web application which works alongside a number of instances of a worker role. Currently the web app passes work to these workers by placing messages in an
If you are using the one of the SignalR scaleout backplanes you can get workers talking to connected clients via your web application.
How to publish messages using the SignalR SqlMessageBus explains how to do this.
It also links to a fully worked example which demonstrates one way of doing this.