boost::asio - 常用方法

域名解析 

boost::asio::io_service io_service;
tcp::resolver resolver(io_service);
tcp::resolver::query query(tcp::v4(), argv[1], "daytime");
tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
tcp::resolver::iterator end;

tcp::socket socket(io_service);
boost::system::error_code error = boost::asio::error::host_not_found;
while (error && endpoint_iterator != end)
{
  std::cout << (*endpoint_iterator).endpoint() << std::endl;
  socket.close();
  socket.connect(*endpoint_iterator++, error);
}

 客户端连接指定地址

boost::asio::ip::tcp::socket socket(io_service);
boost::asio::ip::tcp::endpoint endpoint(
boost::asio::ip::address::from_string("1.2.3.4"), 12345); 

socket.connect(endpoint);

服务端侦听端口

 boost::asio::io_service io_service;

tcp::acceptor acceptor(io_service, tcp::endpoint(tcp::v4(), 13));

for (;;)
{
  tcp::socket socket(io_service);
  acceptor.accept(socket);

}