rsocket-metadata-push-issue

gistfile1.txt

/*
 * Copyright 2016 Netflix, Inc.
 * <p>
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 *  the License. You may obtain a copy of the License at
 *  <p>
 *  http://www.apache.org/licenses/LICENSE-2.0
 *  <p>
 *  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 *  an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 *  specific language governing permissions and limitations under the License.
 */

package io.rsocket.examples.transport.tcp.stream;

import io.rsocket.*;
import io.rsocket.transport.netty.client.TcpClientTransport;
import io.rsocket.transport.netty.server.TcpServerTransport;
import io.rsocket.util.DefaultPayload;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import reactor.core.publisher.Mono;

import java.time.Duration;

public final class StreamingClient {
  static final Logger logger = LoggerFactory.getLogger(StreamingClient.class);

  public static void main(String[] args) {
    RSocketFactory.receive()
        .acceptor(new SocketAcceptorImpl())
        .transport(TcpServerTransport.create("localhost", 7000))
        .start()
        .map(Closeable::onClose)
        .block()
        .subscribe();

    RSocket socket =
        RSocketFactory.connect().acceptor(rSocket -> new AbstractRSocket() {
            @Override
            public Mono<Void> metadataPush(Payload payload) {
                return Mono.fromRunnable(() -> logger.debug("Metadata received by client: "+payload.getDataUtf8()));
            }
        })
            .transport(TcpClientTransport.create("localhost", 7000))
            .start()
            .block();

      socket.metadataPush(DefaultPayload.create("metadata"))
              .then(Mono.delay(Duration.ofSeconds(5))).doFinally(__ -> socket.dispose())
              .block();
  }

  private static class SocketAcceptorImpl implements SocketAcceptor {
    @Override
    public Mono<RSocket> accept(ConnectionSetupPayload setupPayload, RSocket reactiveSocket) {
      return Mono.just(
          new AbstractRSocket() {
              @Override
              public Mono<Void> metadataPush(Payload payload) {
                  reactiveSocket.metadataPush(DefaultPayload.create(
                          "Metadata sent by server " +payload.getDataUtf8())).subscribe();
                  return Mono.empty();
                 }
          });
    }
  }
}