Hi all,

I'm working on setting up a server-side stream GRPC. When the stream is 
started, the server should stream messages to the client until either the 
server or the client shuts down.

When the server shuts down, this is easy - it calls 
StreamObserver.onCompleted() and the client is then notified that the 
stream is ending.

When clients shut down, they can do a graceful shutdown with 
ManagedChannel.shutdownNow() to stop the stream from their end. However, 
when the client shuts down ungracefully, the server never notices, and can 
continue to call StreamObserver.onNext() basically forever.

My question is, is there a way to detect this situation from the server 
side when the client shuts down ungracefully? I would expect an exception 
to be thrown at some point, but that never happens. Can I manually check 
something to see whether the connection is broken?

I've seen one other mention of a similar/same issue in this topic 
<https://groups.google.com/forum/#!msg/grpc-io/aFsIiGnQKTY/ipbaPKuvBgAJ>, 
which is from a long time ago but I don't see a resolution to it.

Thanks,
Chris

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