How to enable keep_alive setting for armeria grpc server?

Question

As a part of serverBuilder of GRPC there are couple of options where armeria server builder takes. One is channelOption and childChannelOption which takes in ChannelOption.SO_KEEPALIVE and a boolean. Even though I set these parameters i get an message saying Unknown channel option 'SO_KEEPALIVE' for channel '[id:xxxxx]' Can some one suggest how it can done as a part of armeria serverbuilder?

Answer 1

It's done like the following:

Server server =
    Server.builder()
          .childChannelOption(ChannelOption.SO_KEEPALIVE, true)
          ...
          .build();

I confirmed that Unknown channel option 'SO_KEEPALIVE' error does not occur.