fiber/examples/asio/echo_client2.cpp

//
// echo_client2.cpp
// ~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
// This source is almost identical to
// http://www.boost.org/doc/libs/release/doc/html/boost_asio/example/cpp03/echo/blocking_tcp_echo_client.cpp
// save that it deliberately introduces a timeout.
// It does not use Boost.Fiber. It is copied here only for completeness. A
// server needs a client.
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#include <cstdlib>
#include <cstring>
#include <iostream>

#include <boost/asio.hpp>
#include <boost/date_time/posix_time/posix_time_types.hpp>
#include <boost/thread.hpp>

using boost::asio::ip::tcp;

enum { max_length = 1024 };

int main(int argc, char* argv[])
{
  try
  {
    if (argc != 3)
    {
      std::cerr << "Usage: echo_client2 <host> <port>\n";
      return 1;
    }

    boost::asio::io_service io_service;

    tcp::resolver resolver(io_service);
    tcp::resolver::query query(tcp::v4(), argv[1], argv[2]);
    tcp::resolver::iterator iterator = resolver.resolve(query);

    tcp::socket s(io_service);
    boost::asio::connect(s, iterator);

    using namespace std; // For strlen.
    std::cout << "Enter message: ";
    char request[max_length];
    std::cin.getline(request, max_length);
    size_t request_length = strlen(request);
    boost::asio::write(s, boost::asio::buffer(request, request_length));

    char reply[max_length];
    size_t reply_length = boost::asio::read(s,
        boost::asio::buffer(reply, request_length));
    std::cout << "Reply is: ";
    std::cout.write(reply, reply_length);
    std::cout << "\nWe block for 10 seconds in order to let session timeout\n";
    boost::this_thread::sleep( boost::posix_time::seconds( 10) );
  }
  catch (std::exception& e)
  {
    std::cerr << "Exception: " << e.what() << "\n";
  }

  return 0;
}