#include <boost/asio.hpp>
#include <boost/system/error_code.hpp>

using boost::asio::buffer;
using boost::asio::io_service;
using boost::asio::ip::tcp;
using boost::asio::read;
using boost::system::error_code;
using boost::system::system_error;
using std::cerr;
using std::exception;
using std::string;

int
main(int argc, char *argv[])
{
  try
  {
    string port("1492");
    if (argc > 1)
      port.assign(argv[1]);
    string host("localhost");
    if (argc > 2)
      host.assign(argv[2]);

    tcp::resolver::query q(host, port);
    io_service io_svc;
    tcp::resolver r(io_svc);
    tcp::resolver::iterator eit = r.resolve(q);
    tcp::resolver::iterator end;

    // Try each endpoint until we successfully establish a connection.
    tcp::socket s(io_svc);

    error_code ec = boost::asio::error::host_not_found;
    while (ec && eit != end)
    {
      cerr << "connecting to " << eit->endpoint() << " ... \n";
      s.close();
      s.connect(*eit++, ec);
    }
    if (ec)
      throw system_error(ec);
    cerr << "connected.\n";

    boost::asio::socket_base::keep_alive o(true);
    s.set_option(o);

    const string buf("foo");
    do
    {
      cerr << "calling write ...\n";
      std::size_t b = write(s, buffer(buf));
      cerr << "wrote " << b << " bytes.\n";
    } while (std::getchar());
  }
  catch (system_error const & e)
  {
    cerr << e.what() << "\n";
  }
  catch (exception const & e)
  {
    cerr << e.what() << "\n";
  }
  catch(...)
  {
    cerr << "caught unknown\n";
  }
}