|  | Home | Libraries | People | FAQ | More | 
        A wait handler must meet the requirements for a handler.
        A value h of a wait handler class should work correctly in the
        expression h(ec), where ec is an lvalue of type
        const error_code.
      
A free function as a wait handler:
void wait_handler(
    const boost::system::error_code& ec)
{
  ...
}
A wait handler function object:
struct wait_handler
{
  ...
  void operator()(
      const boost::system::error_code& ec)
  {
    ...
  }
  ...
};
A lambda as a wait handler:
socket.async_wait(...,
    [](const boost::system::error_code& ec)
    {
      ...
    });
        A non-static class member function adapted to a wait handler using std::bind():
      
void my_class::wait_handler(
    const boost::system::error_code& ec)
{
  ...
}
...
socket.async_wait(...,
    std::bind(&my_class::wait_handler,
      this, std::placeholders::_1));
        A non-static class member function adapted to a wait handler using boost::bind():
      
void my_class::wait_handler(
    const boost::system::error_code& ec)
{
  ...
}
...
socket.async_wait(...,
    boost::bind(&my_class::wait_handler,
      this, boost::asio::placeholders::error));