Close channels from Server sides

[Anh Le]

When I use an interceptor to authenticate clients (in bi-directional streaming scenarios), if unauthenticated clients refuse to shutdown their channels, how can I forcefully close connections and reclaim opened file descriptors?

Here's the code for the interceptor (assuming that I reject all gRPC calls) and it doesn't work.

@Override
public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(
    ServerCall<ReqT, RespT> call,
    final Metadata requestHeaders,
    ServerCallHandler<ReqT, RespT> next) {

	call.close(Status.CANCELLED, requestHeaders);
	return new ServerCall.Listener() {

	};

}

[Carl Mastrangelo]

On the server side you can set NettyServerBuilder.maxConnectionAge() and related methods to limit how long idle clients are connected.

[Anh Le]

@Carl: Great advice! Thank you.