text: /*
   * Copyright (C) 2016 Open Source Robotics Foundation
   *
   * 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
   *
   *     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 <iostream>
  #include <string>
  #include <ignition/msgs.hh>
  #include <ignition/transport.hh>
  
  //////////////////////////////////////////////////
  /// \brief Provide a "quote" service.
  /// Well OK, it's just single-quote service but do you really need more?
  void srvQuote(ignition::msgs::StringMsg &_rep, bool &_result)
  {
    std::string awesomeQuote = "This is it! This is the answer. It says here..."
      "that a bolt of lightning is going to strike the clock tower at precisely "
      "10:04pm, next Saturday night! If...If we could somehow...harness this "
      "lightning...channel it...into the flux capacitor...it just might work. "
      "Next Saturday night, we're sending you back to the future!";
  
    // Set the response's content.
    _rep.set_data(awesomeQuote);
  
    // The response succeed.
    _result = true;
  }
  
  //////////////////////////////////////////////////
  int main(int argc, char **argv)
  {
    // Create a transport node.
    ignition::transport::Node node;
    std::string service = "/quote";
  
    // Advertise a service call.
    if (!node.Advertise(service, srvQuote))
    {
      std::cerr << "Error advertising service [" << service << "]" << std::endl;
      return -1;
    }
  
    // Zzzzzz.
    ignition::transport::waitForShutdown();
  }
  