@Override
        public void invoke(PooledChannel pooledChannel, ClientRequestContext ctx,
                           HttpRequest req, DecodedHttpResponse res) {
            res.close(ClosedSessionException.get());
        }
2^29 - We could have used 2^30 but this should be large enough.
core/src/main/java/com/linecorp/armeria/internal/client/HttpSession.java