Grpc-java: How do I set the GRPC_ARG_KEEPALIVE_TIME_MS parameter on the server?

[BalzGuenat]

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By default, the GRPC_ARG_KEEPALIVE_TIME_MS parameter is set to 2h on the server. How can I change this?

[andrm]

I use this:

     // implementation of the service:
     MyService boxService = new MyService();

     NettyServerBuilder nettyBuilder = NettyServerBuilder.forPort(ssl_port)

                    .permitKeepAliveWithoutCalls(true)

                    .permitKeepAliveTime(5, TimeUnit.SECONDS);

    nettyBuilder.addService(boxService);

    Service server =  nettyBuilder
                    .build();

KeepAlive is a client decision. This allows the client so send keep-alives every 5 seconds, even if no calls are active. Helpful for streaming calls, where you can't use deadlines really.