Corda - How to check if counter party nodes are running?

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I have build a CorDapp using "Yo!CorDapp" example (https://github.com/corda/spring-observable-stream), over release-v1 of Corda platform.

The CorDapp has four nodes - Controller node (provides network map service and validating notary service), "node A", "node B" and "node C". Following are the flows defined in the app -

Flow 1: "Node A" sends a trade request to "Node B". "Node C" is also notified.

Flow 2: "Node B" approves the trade request, self-signs it, gets signature from A and closes the trade. "Node C" is also notified.

I want "Node A" to check whether "Node B" is running, so that it can decide to initiate the flow "Flow 1".

Is this possible? If yes, kindly elaborate.

May 27 in Blockchain by Sriram
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