Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of Boost. Click here to view this page for the latest version.
PrevUpHomeNext
basic_socket_acceptor::async_accept (4 of 8 overloads)

Start an asynchronous accept.

template<
    typename Executor1,
    typename MoveAcceptHandler = DEFAULT>
DEDUCED async_accept(
    const Executor1 & ex,
    MoveAcceptHandler && handler = DEFAULT,
    typename enable_if< is_executor< Executor1 >::value >::type *  = 0);

This function is used to asynchronously accept a new connection. The function call always returns immediately.

This overload requires that the Protocol template parameter satisfy the AcceptableProtocol type requirements.

Parameters

ex

The I/O executor object to be used for the newly accepted socket.

handler

The handler to be called when the accept operation completes. Copies will be made of the handler as required. The function signature of the handler must be:

void handler(
  const boost::system::error_code& error, // Result of operation.
  typename Protocol::socket::template rebind_executor<
    Executor1>::other peer // On success, the newly accepted socket.
);

Regardless of whether the asynchronous operation completes immediately or not, the handler will not be invoked from within this function. On immediate completion, invocation of the handler will be performed in a manner equivalent to using post.

Example
void accept_handler(const boost::system::error_code& error,
    boost::asio::ip::tcp::socket peer)
{
  if (!error)
  {
    // Accept succeeded.
  }
}

...

boost::asio::ip::tcp::acceptor acceptor(my_context);
...
acceptor.async_accept(my_context2, accept_handler);

PrevUpHomeNext