text: /*
   *
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * 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.
   *
   */
  
  #include <proton/connection.hpp>
  #include <proton/container.hpp>
  #include <proton/default_container.hpp>
  #include <proton/listener.hpp>
  #include <proton/message.hpp>
  #include <proton/messaging_handler.hpp>
  #include <proton/sender.hpp>
  #include <proton/thread_safe.hpp>
  #include <proton/tracker.hpp>
  
  #include <iostream>
  
  #include "fake_cpp11.hpp"
  
  class hello_world_direct : public proton::messaging_handler {
    private:
      std::string url;
      proton::listener listener;
  
    public:
      hello_world_direct(const std::string& u) : url(u) {}
  
      void on_container_start(proton::container &c) OVERRIDE {
          listener = c.listen(url);
          c.open_sender(url);
      }
  
      // Send one message and close sender
      void on_sendable(proton::sender &s) OVERRIDE {
          proton::message m("Hello World!");
          s.send(m);
          s.close();
      }
  
      // Receive one message and stop listener
      void on_message(proton::delivery &, proton::message &m) OVERRIDE {
          std::cout << m.body() << std::endl;
          listener.stop();
      }
  
      // After receiving acknowledgement close connection
      void on_tracker_accept(proton::tracker &t) OVERRIDE {
          t.connection().close();
      }
  };
  
  int main(int argc, char **argv) {
      try {
          // Pick an "unusual" port since we are going to be talking to
          // ourselves, not a broker.
          std::string url = argc > 1 ? argv[1] : "127.0.0.1:8888/examples";
  
          hello_world_direct hwd(url);
          proton::default_container(hwd).run();
  
          return 0;
      } catch (const std::exception& e) {
          std::cerr << e.what() << std::endl;
      }
  
      return 1;
  }
  